WO2017092046A1 - Optical device and optical transmission system - Google Patents

Abstract

An optical device (40), comprising: a plurality of first optical fibre connectors (401) and a WDM device (402) connected to the plurality of first optical fibre connectors (401), wherein the plurality of first optical fibre connectors (401) are mounted on the WDM device (402); each of the plurality of first optical fibre connectors (401) is used to transmit optical signals with a group of wavelengths, and the wavelengths of optical signals transmitted by different first optical fibre connectors (401) are different; and the WDM device (402) is used to perform wavelength division multiplexing processing and de-multiplexing processing. By means of the optical device, the integration of optical fibre connectors (401) and a WDM device (402) is implemented, and an integrated optical device can be directly inserted on a single board, and occupies a relatively small space.

Description

Optical device and optical transmission system Technical field

The present application relates to the field of optical communication technologies, and in particular, to an optical device and an optical transmission system.

Background technique

As users' demand for bandwidth continues to increase, fiber access is currently the mainstream of access networks, especially PON (Passive Optical Network).

At present, the main deployed PON in the world is GPON (Gigabit PON, Gigabit Passive Optical Network). However, the bandwidth provided by GPON is limited, so there is an upgrade plan for GPON - XGPON (10 Gigabit PON, 10 Gigabit Passive Optical Network). The OLT (Optical Line Terminal) in the GPON OLT and the XGPON is located in the central office and can be in the form of a single board. Each board has a slot for the optical module and is inserted in the chassis. When the GPON OLT and the XGPON OLT work independently, it is only necessary to insert the optical module and the trunk fiber at the respective ports.

Since the downstream wavelength of GPON is different from the downstream wavelength of XGPON, the upstream wavelength of GPON is different from the upstream wavelength of XGPON. Therefore, XGPON and GPON can be on the same ODN (Optical Distribution Network) by wavelength division multiplexing. coexist.

When XGPON and GPON coexist on one ODN, a WDM (Wavelength Division Multiplexing) device can be added in the central office to implement the wavelength division multiplexing function.

The scheme in which XGPON and GPON coexist on one ODN is as shown in FIG. 1 (the ports on the board in FIG. 1 are port 0, port 1, ..., port N, N are positive integers). After the optical module is inserted into the port of the GPON board and the XPGON board, a WDM device is added. The transmission port and the reflection port of the WDM device are respectively connected to the GPON optical module and the XGPON optical module. The common port of the WDM device is connected to the trunk fiber to implement the wave. Sub-multiplexing. After the two fiber connectors of the WDM device are connected to the GPON optical module and the XGPON optical module respectively, the main body can only hang in front of the panel and cannot be placed in the chassis. Another solution for implementing wavelength division multiplexing is to place the WDM device in a cabinet or other vacant location. In both placement modes, WDM devices need to occupy extra space outside the chassis or in the cabinet, accounting for Use more space.

Summary of the invention

The present application provides an optical device and an optical transmission system including the optical device, which solves the problem that the WDM optical device currently used and the WDM device including the WDM optical device occupy a large space.

In a first aspect, the present application provides an optical device including: a plurality of first fiber connectors, and a wavelength division multiplexing WDM device connected to the plurality of first fiber connectors, the plurality of first fiber connectors being mounted on On the WDM device;

Each of the plurality of first fiber optic connectors is configured to transmit a set of wavelengths of optical signals, and different first fiber optic connectors transmit optical signals having different wavelengths;

The WDM device is configured to perform wavelength division multiplexing processing on each set of optical signals received by the plurality of first optical fiber connectors, and output optical signals including multiple sets of wavelengths obtained after wavelength division multiplexing processing, and And demultiplexing the received optical signals including the plurality of sets of wavelengths, and transmitting the optical signals of each set of wavelengths obtained by the demultiplexing process through the first optical fiber connector for transmitting the optical signals of the set of wavelengths respectively. .

The optical device provided by the first aspect realizes the integration of the optical fiber connector and the WDM device, and the integrated optical device can be directly inserted into the single board, occupying a small space. In addition, since the plurality of first fiber connectors are integrated with the WDM device, the fibers between the fiber connectors and the WDM devices are also prevented from being exposed, which can prevent fiber damage and affect the transmission of optical signals.

With reference to the first aspect, in a first possible implementation, the WDM device includes: a WDM filter and a fiber connector adapter connected to the WDM filter;

The WDM filter is connected to the plurality of first fiber connectors for:

Performing wavelength division multiplexing processing on each group of wavelengths of optical signals received by the plurality of first fiber optic connectors, and transmitting optical signals including multiple sets of wavelengths obtained by wavelength division multiplexing processing to the fiber optic connector adapter; and /or

Demultiplexing optical signals comprising multiple sets of wavelengths from the fiber optic splice adapter And transmitting, by the demultiplexing process, the optical signals of each group of wavelengths through a first fiber connector for transmitting the optical signals of the group of wavelengths;

The fiber optic connector adapter provides an interface for connecting a second fiber optic connector for:

Receiving, by the WDM filter, a wavelength division multiplexed optical signal comprising a plurality of sets of wavelengths, and transmitting the received optical signal comprising the plurality of sets of wavelengths through the second optical fiber connector; and/or

Receiving optical signals from the second fiber optic connector comprising a plurality of sets of wavelengths, and transmitting the received optical signals comprising the plurality of sets of wavelengths to the WDM filter.

When the WDM device has a fiber-optic connector adapter built in, the fiber-optic connector of the trunk fiber is inserted into the fiber-optic connector adapter in the WDM device to complete the fiber connection.

With reference to the first aspect, in a second possible implementation, the WDM device includes: a WDM filter, and the WDM filter is connected to the plurality of first fiber connectors for:

Performing wavelength division multiplexing processing on each group of optical signals received by the plurality of first fiber optic connectors, and outputting optical signals including multiple sets of wavelengths obtained by wavelength division multiplexing processing through the connected optical fibers; and/or

The received optical signals including the plurality of sets of wavelengths are demultiplexed, and the optical signals of each set of wavelengths obtained by the demultiplexing process are respectively sent out through the first optical fiber connector for transmitting the optical signals of the set of wavelengths.

Generally, the fiber connector is relatively large in size and integrated in the WDM device, which will result in a larger size of the WDM device. With this implementation, since there is no fiber connector in the optical device, the optical device can be further reduced. volume.

With reference to the first aspect or any one of the foregoing possible implementation manners of the first aspect, in a third possible implementation manner,

The relative position between the plurality of first fiber optic connectors can vary.

The optical device adopting the implementation manner has good adaptability and can be applied to various single boards with different port spacings.

In conjunction with the third possible implementation of the first aspect, in a fourth possible implementation,

The WDM device is provided with a sliding slot, and the plurality of first optical fiber connectors are installed in the sliding slot, and the position of the sliding slot is adjustable.

This possible implementation provides an implementation in which the relative position between the plurality of first fiber optic connectors can be changed.

In combination with the first aspect or the first two possible implementations of the first aspect, in a fifth possible implementation,

The relative position between the plurality of first fiber optic connectors is fixed.

In conjunction with the fifth possible implementation of the first aspect, in a sixth possible implementation,

The plurality of first fiber optic connectors have an integral structure with the WDM device.

In a second aspect, the application provides an optical transmission system, including:

An optical line terminal, wherein the optical signals transmitted by the plurality of ports provided by the optical line terminal have different wavelengths;

An optical distribution network, configured to perform split processing on the optical signal from the optical line terminal, send the optical signal to each optical network unit, and combine the optical signals from the optical network units to the optical line terminal. ;

The optical network unit is configured to receive the optical signal after the shunt processing from the optical distribution network, and send the optical signal to the optical distribution network for combining processing;

The optical transmission system further includes any one of the optical devices provided by the first aspect, wherein each of the plurality of first optical fiber connectors of the optical device is respectively plugged in the optical line terminal Receiving, on a port, an optical signal of a group of wavelengths from the port, and transmitting a set of optical signals of the wavelength to the port; the optical device transmitting the optical signal comprising the plurality of sets of wavelengths obtained by wavelength division multiplexing processing to The optical distribution network receives and receives optical signals from the optical distribution network comprising a plurality of sets of wavelengths.

In the optical transmission system, the optical fiber connector and the WDM device are integrated in the optical device, which effectively reduces the volume of the optical device without occupying extra space. Further, the fiber connected between the fiber connector and the WDM device can be prevented from being exposed, which can prevent the fiber from being damaged and affecting the transmission of the optical signal.

In a third aspect, the present application provides an optical device, including:

a third fiber optic connector, and at least one fourth fiber optic connector coupled to the point fiber optic connector;

Each of the at least one fourth fiber optic splice is configured to transmit a set of wavelengths of optical signals, and if there are a plurality of fourth fiber optic splices, the optical signals transmitted by the different fourth fiber optic splices have different wavelengths;

The third fiber optic connector incorporates a wavelength division multiplexed WDM device, the WDM device for:

Performing wavelength division multiplexing processing on the optical signals of the group of wavelengths received by the third fiber optic connector and the optical signals received from the at least one fourth fiber optic connector, and the wavelength division multiplexing process comprises multiple sets of wavelengths Optical signals are sent out; and/or

The received optical signals including the plurality of sets of wavelengths are demultiplexed, and the optical signals of each set of wavelengths obtained by the demultiplexing process are respectively sent out through corresponding specific optical fiber connectors, and the corresponding specific optical fiber joints are included a fiber optic connector for transmitting optical signals of the set of wavelengths among the plurality of fiber optic connectors, including the third fiber optic connector and the at least one fourth fiber optic connector.

The third fiber optic connector has a built-in wavelength division multiplexing WDM device, which effectively reduces the size of the optical device without taking up extra space. In addition, by embedding the WDM device in the third fiber connector, it is possible to prevent the fiber connecting between the fiber connector and the WDM device including the third fiber connector and the plurality of the fourth fiber connector from being exposed, thereby preventing the fiber from being damaged and affecting the light. Signal transmission.

In combination with the third aspect, in a first possible implementation manner,

The WDM device includes: a WDM filter and a fiber optic connector adapter connected to the WDM filter;

The WDM filter is used to:

Performing wavelength division multiplexing processing on each group of optical signals received by the third fiber connector and the at least one fourth fiber connector, and transmitting optical signals including multiple sets of wavelengths obtained by wavelength division multiplexing processing to The fiber optic connector adapter; and/or

Performing a demultiplexing process on the optical signal comprising the plurality of sets of wavelengths from the optical fiber connector adapter, and transmitting, by using the corresponding optical fiber connector, the optical signals of each set of wavelengths obtained by the demultiplexing process;

The fiber optic connector adapter provides an interface for connecting a fifth fiber optic connector for:

Receiving, by the wavelength division multiplexing process of the WDM filter, the optical signals comprising the plurality of sets of wavelengths, and transmitting the received optical signals comprising the plurality of sets of wavelengths through the fifth optical fiber connector; and/or

Receiving optical signals from the fifth fiber optic connector comprising a plurality of sets of wavelengths, and transmitting the received optical signals comprising the plurality of sets of wavelengths to the WDM filter.

When the WDM device has a fiber-optic connector adapter built in, the fiber-optic connector of the trunk fiber is inserted into the fiber-optic connector adapter in the WDM device to complete the fiber connection.

In combination with the third aspect, in a second possible implementation manner,

The WDM device includes: a WDM filter connected to the third fiber connector and the at least one fourth fiber connector for:

Performing wavelength division multiplexing processing on each set of optical signals received by the third fiber joint and the at least one fourth fiber joint, and passing the optical signals including the plurality of sets of wavelengths obtained by wavelength division multiplexing processing Connected fiber output; and/or

The received optical signals including the plurality of sets of wavelengths are demultiplexed, and the optical signals of each set of wavelengths obtained by the demultiplexing process are respectively sent out through the corresponding specific optical fiber connectors.

Generally, the fiber optic connector adapter is relatively large in size and integrated in the WDM device, which will result in a larger size of the WDM device. With this implementation, the optical device can be further reduced in size because there is no fiber connector in the optical device. .

In a fourth aspect, the application provides an optical transmission system, including:

An optical line terminal, wherein the optical signals transmitted by the plurality of ports provided by the optical line terminal have different wavelengths;

An optical distribution network, configured to perform split processing on the optical signal from the optical line terminal, send the optical signal to each optical network unit, and combine the optical signals from the optical network units to the optical line terminal. ;

The optical network unit is configured to receive the optical signal after the shunt processing from the optical distribution network, and send the optical signal to the optical distribution network for combining processing;

The optical transmission system further includes any one of the optical devices provided in the above third aspect, including the third optical fiber connector of the optical device and the plurality of optical fiber connectors including the plurality of fourth optical fiber connectors Each of the fiber optic connectors is respectively plugged into a port provided by the optical line terminal, receives a set of wavelength optical signals from the port, and transmits a set of wavelength optical signals to the port; the optical device divides the wave The optical signals comprising the plurality of sets of wavelengths obtained after the multiplexing process are sent to the optical distribution network, and receive optical signals from the optical distribution network comprising a plurality of sets of wavelengths.

In the optical transmission system, after the third optical fiber connector has a built-in WDM device, it is integrated with the plurality of fourth optical fiber connectors in the optical device, thereby effectively reducing the volume of the optical device without occupying extra space. Further, it is possible to prevent the fiber connected between the fiber connector including the third fiber connector and the plurality of fourth fiber connectors from being connected to the WDM device, thereby preventing the fiber from being damaged and affecting the transmission of the optical signal.

DRAWINGS

1 is a schematic diagram of a scheme in which XGPON and GPON coexist on one ODN;

2 is a schematic structural view of a WDM device;

3 is a schematic structural view of another WDM device;

4 is a schematic structural view of an optical device according to Embodiment 1;

5 is a schematic diagram of optical signals before wavelength division multiplexing and after wavelength division multiplexing in Embodiment 1 and Embodiment 2;

6 is a schematic diagram of a possible case where two fiber connectors are respectively a GPON fiber connector and an XGPON fiber connector in the first embodiment;

7 is a schematic diagram showing another possible case where two fiber connectors are respectively a GPON fiber connector and an XGPON fiber connector in the first embodiment;

8 is a schematic diagram of a first alternative implementation of a chute on a WDM device in the first embodiment;

9 is a schematic diagram of a second alternative implementation of a chute on a WDM device in the first embodiment;

10 is a schematic diagram of a third alternative implementation of a chute on a WDM device in the first embodiment;

11 is a schematic structural diagram of an optical device according to a first alternative implementation manner of Embodiment 1;

12 is a schematic structural diagram of an optical device according to a second alternative implementation manner of Embodiment 1;

13 is a schematic structural diagram of an optical transmission system using the optical device provided in Embodiment 1;

14 is a schematic structural view of an optical device according to Embodiment 2;

15 is a schematic structural view of an optical transmission system using the optical device provided in the second embodiment.

detailed description

For a better understanding of the above objects, aspects and advantages of the present application, a detailed description is provided below. The detailed description will clarify various embodiments of the optical device in the present application by the accompanying drawings and examples. It is apparent that the described embodiments are part of the embodiments of the invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The present application provides an optical device to solve the problem that the WDM optical device currently used has a large space.

In a first aspect, the present application provides an optical device including: a plurality of first fiber optic connectors, and a wavelength division multiplexing WDM device connected to the plurality of first fiber optic connectors, the plurality of first fiber optic connectors and the WDM device Integrated in one.

Wherein each of the plurality of first fiber optic splices transmits a set of optical signals of different wavelengths, and the optical signals transmitted by the different first optical fiber splices have different wavelengths; the WDM device can receive each set of wavelengths of the plurality of first optical fiber splices The optical signal is subjected to wavelength division multiplexing processing, and the optical signal including the plurality of sets of wavelengths obtained after the wavelength division multiplexing processing is output, and the received optical signal including the plurality of sets of wavelengths is demultiplexed and demultiplexed. The resulting optical signals of each set of wavelengths are respectively transmitted through a first fiber optic connector for transmitting optical signals of the set of wavelengths.

Meanwhile, the present application further provides an optical transmission system including: an optical line terminal, the optical signals transmitted by the plurality of ports provided by the optical line terminal have different wavelengths; and the optical distribution network is used for the terminal from the optical line The optical signal is split and processed and sent to each optical network unit, and the optical signals from the respective optical network units are combined and sent to the optical line terminal; the optical network unit is configured to receive the split from the optical distribution network. The processed optical signal and the optical signal are sent to the optical distribution network The optical transmission system further includes the optical device of the first aspect, wherein each of the plurality of first optical fiber connectors of the optical device is respectively plugged into a port provided by the optical line terminal, and the receiving is from the optical device a group of wavelength optical signals of the port, and transmitting a set of wavelength optical signals to the port; the optical device transmits the optical signals including the plurality of sets of wavelengths obtained by wavelength division multiplexing processing to the optical distribution network, and receives the light distribution The network contains multiple sets of wavelengths of optical signals.

In a second aspect, the present application further provides another optical device, the optical device comprising a third fiber optic connector and at least one fourth fiber optic connector coupled to the third fiber optic connector; each of the fourth fiber optic connectors transmitting a set of wavelengths The optical signal, if there are a plurality of fourth fiber connectors, the wavelengths of the optical signals transmitted by the different fourth fiber connectors are different.

Wherein, the third fiber connector has a wavelength division multiplexing WDM device, and the WDM device can perform wavelength division multiplexing processing on the optical signal received by the third fiber connector and the optical signal received from the fourth fiber connector, and the wavelength division multiplexing process is performed. The obtained optical signal comprising a plurality of sets of wavelengths is sent out; and the received optical signals including the plurality of sets of wavelengths are demultiplexed, and each set of optical signals obtained by the demultiplexing process is respectively passed through a corresponding specific The fiber connector is sent out.

Meanwhile, the present application further provides an optical transmission system including: an optical line terminal, the optical signals transmitted by the plurality of ports provided by the optical line terminal have different wavelengths; and the optical distribution network is used for the terminal from the optical line The optical signal is split and processed and sent to each optical network unit, and the optical signals from the respective optical network units are combined and sent to the optical line terminal; the optical network unit is configured to receive the split from the optical distribution network. The processed optical signal, and the optical signal is sent to the optical distribution network for combining processing; the optical transmission system further includes the optical device of the second aspect, including a third optical fiber connector of the optical device and a plurality of fourth optical fiber connectors Each of the plurality of fiber optic connectors is internally plugged into a port provided by the optical line terminal, receives a set of wavelength optical signals from the port, and transmits a set of wavelength optical signals to the port; The optical device transmits the optical signals including the plurality of sets of wavelengths obtained by the wavelength division multiplexing processing to the optical distribution network, and receives the optical signals including the plurality of sets of wavelengths from the optical distribution network. .

The optical device and the optical transmission system including the optical device provided by the present application realize the integration of the optical fiber connector and the WDM device, and the integrated optical device can be directly inserted into the single board, occupying a small space.

In addition, since the plurality of first fiber connectors are integrated with the WDM device, the fibers between the fiber connectors and the WDM devices are also prevented from being exposed, which can prevent fiber damage and affect the transmission of optical signals.

Wherein, the optical device and the optical transmission system including the optical device provided by the above second aspect further reduce the volume of the optical device and save space by integrating the WDM device in the optical fiber connector. Hereinafter, in order to facilitate understanding, the various embodiments of the present application and the accompanying drawings are listed in Table 1 below.

Table 1

The ports provided by the WDM device in the optical device provided in the following Embodiment 1 and Embodiment 2, the fiber connection manner can be as shown in FIG. 2 and FIG. 3, and the WDM device leads three fibers in the form of ports, corresponding to the common ports ( Com), transmissive port (Pass) and reflective port (Reflect), each fiber has a fiber optic connector; wave division in the square (as shown in Figure 2) or cylindrical (as shown in Figure 3) Use the function.

[Embodiment 1]

FIG. 4 shows an optical device provided in Embodiment 1. As shown in FIG. 4, the optical device 40 includes a plurality of fiber optic splices 401 and a WDM device 402 coupled to a plurality of fiber optic splices 401 that are integrated with the WDM device 402.

Wherein, each of the plurality of fiber connectors 401 is configured to transmit optical signals of a group of wavelengths, and different optical fiber connectors 401 transmit optical signals having different wavelengths;

The WDM device 402 can perform wavelength division multiplexing processing on each group of optical signals received by the plurality of optical fiber connectors 401, and output optical signals including multiple sets of wavelengths obtained after wavelength division multiplexing processing; The optical signals of the respective sets of wavelengths obtained by the demultiplexing process are respectively sent out through the optical fiber connector 401 for transmitting the optical signals of the set of wavelengths by performing demultiplexing processing on the received optical signals including the plurality of sets of wavelengths.

In the first embodiment, and in the second embodiment, the optical signal of each group of wavelengths refers to an optical signal that transmits at least one wavelength in one optical fiber, and the optical signal that includes multiple sets of wavelengths refers to light of each group of wavelengths. The signal is multiplexed and transmitted in an optical fiber. The specific implementation form can be as shown in FIG. 5. Wherein, the optical signals of the group of wavelengths before (or after the demultiplexing) of the WDM device include optical signals of wavelengths λ ₁ and λ ₂ , and optical signals of the other group of wavelengths include wavelengths. For the optical signals of λ ₃ and λ ₄ , the optical signals of the plurality of sets of wavelengths include optical signals of wavelengths λ ₁ , λ ₂ , λ ₃ , λ ₄ . Among them, the WDM device can include three ports, namely a common port, a transmissive port, and a reflective port. The transmission port and the reflection port of the WDM device are connected to the fiber connector (for transmitting the optical signal before the demultiplexing process and after the demultiplexing process), and the common port of the WDM device is connected to the trunk fiber (for transmission multiplexing processing, demultiplexing) The light signal before processing).

In the first embodiment and the following embodiment 2, the wavelength division multiplexing processing refers to the WDM device transmitting optical signals of different wavelengths in multiple optical fibers through one optical fiber; the demultiplexing processing means that the WDM device is in one optical fiber. The transmitted optical signal including a plurality of wavelengths is separated, and the separated plurality of optical signals are transmitted through a plurality of optical fibers.

In the first embodiment, the relative positions of the plurality of optical fiber connectors 401 may be fixed or may be changed. The relative position can be changed, so that the optical device 40 provided by the present application can be applied to various single-board structures, improving the applicability of the optical device 40.

The optical device 40 includes two fiber connectors 401. One of the two fiber connectors 401 is a GPON fiber connector, and the other is an XGPON fiber connector.

One possibility is that some ports on a single board are used to connect GPON fiber connectors (the port is referred to as "GPON port" for short), and the remaining ports are used to connect XGPON fiber connectors (this port is referred to as "XGPON port" for short). The optical device 40 can implement any GPON port and any XGPON on the board in a range in which the relative positions of the two fiber connectors 401 can be changed. The multiplexing process of the optical signals transmitted by the port (as shown in Figure 6).

Another possibility is that the spacing between the ports on the boards provided by different manufacturers may be different. For the sake of simplicity, the GPON ports of the XGPON ports on a single board are spaced apart from each other. The distance between the ports of the boards provided by the manufacturer 1 is 5 mm. The spacing between the boards provided by the manufacturer 2 is 6 mm. Since the relative positions of the two optical fiber connectors 401 can be changed, it can be applied to both the single board provided by the manufacturer 1 and the single board provided by the manufacturer 2 (as shown in FIG. 7).

Further, the WDM device can be equipped with a sliding slot, and the bottom end of the optical fiber connector 401 is located in the sliding slot and can be adjusted in the direction of the sliding slot. The chute can solve the problem that the connection between the plurality of optical fiber connectors 401 is not convenient when the position is not fixed, and a plurality of optical fiber connectors 401 can be placed in the chute.

There are various implementations of the chute. The implementation of the three types of chutes is given below. The actual implementation of the chute is not limited to these three types.

Figure 8 shows a first implementation of the chute. Wherein, both ends of the optical fiber connector 401 have arc-shaped protrusions, and two opposite inner walls of the sliding slot are provided with arc-shaped elastic rubber protrusions, and the two ends of the optical fiber joint 401 are arc-shaped elastic rubber protrusions stuck on the inner wall of the sliding groove. Between the recessed areas. In this way, the optical fiber connector 401 can be fixed in a fixed position without moving along the sliding slot, and does not slide arbitrarily; when the optical fiber connector 401 needs to move along the sliding slot, an external force is applied, and the optical fiber joint 401 is used in the sliding slot by elastic deformation of the rubber. Slide to stop the slide and fix it at the specified position when it reaches the specified position.

Figure 9 shows a second implementation of the chute. Wherein, both ends of the optical fiber connector 401 have arc-shaped protrusions, and inner walls on both sides of the sliding slot are distributed with a spring-filled compartment with a cylindrical top end, and the diameter of the cylindrical protrusion is larger than the width of the compartment. Both ends of the optical fiber connector 401 are caught in a recessed area between the cylindrical projections on the inner wall of the chute. In this way, the optical fiber connector 401 can be fixed in a fixed position without moving along the sliding slot, and does not arbitrarily slide; when the optical fiber connector 401 needs to move along the sliding slot, an external force is applied, and the optical fiber joint 401 is in the sliding slot by elastic deformation of the spring. When sliding, when the specified position is reached, the spring bounces and the fiber connector 401 stops sliding and is fixed at the designated position.

Figure 10 shows a third implementation of the chute. Wherein two opposite inner walls of the chute are provided with arc-shaped protrusions, the optical fiber joint 401 has a spring built therein and has protrusions at both ends, the springs in the optical fiber joint 401 are connected with the protrusions at both ends, and the convex cards at both ends of the optical fiber joint 401 Curved projection on the inner wall of the chute Within the recessed area. In this way, the optical fiber connector 401 can be stuck in a fixed position without moving along the chute, and does not arbitrarily slide; when the optical fiber connector 401 is to be moved along the chute, the optical fiber joint 401 is in the chute by elastic deformation of the spring in the optical fiber connector 401. When sliding inside, when the specified position is reached, the spring bounces and the fiber connector 401 stops sliding and is fixed at the designated position.

In the first embodiment, the specific structure of the WDM device 402 can be implemented in various manners. Here, the following two alternative implementation manners are taken as an example, and the actual implementation manner is not limited to the examples.

1, the first alternative implementation

Figure 11 shows a first alternative implementation of the first embodiment.

In the optical device 40 shown in Figure 11, the WDM device 402 can include a WDM filter and a fiber optic splice adapter coupled to the WDM filter.

The WDM filter can perform wavelength division multiplexing processing on each group of optical signals received by each optical fiber connector 401, and transmit optical signals including multiple sets of wavelengths obtained by wavelength division multiplexing processing to the optical fiber connector adapter; The optical signals including the plurality of sets of wavelengths from the optical fiber connector adapter may be demultiplexed, and the optical signals of each set of wavelengths obtained by the demultiplexing process are sent out through the optical fiber connector 401 for transmitting the optical signals of the set of wavelengths. .

The fiber optic connector adapter provides an interface for connecting the external fiber connector 41, and can receive the wavelength division multiplexing processed optical signal of the WDM filter output, and pass the received optical signal including multiple sets of wavelengths. The inserted fiber connector 41 is sent out; or an optical signal containing a plurality of sets of wavelengths from the fiber connector 41 may be received, and the received optical signals including the plurality of sets of wavelengths are sent to the WDM filter.

The first alternative implementation of the first embodiment integrates the fiber optic connector 401 with the WDM device 402, wherein the WDM device 402 has a WDM filter and a fiber splice adapter. The fiber optic connector adapter connects directly to the backbone fiber. This solution enables the integration of the fiber optic connector 401 with the WDM device 402, effectively reducing the size of the optical device 40 without taking up extra space.

In addition, after the fiber connector 401 is integrated with the WDM device 402, the fiber between the fiber connector 401 and the WDM device 402 can be prevented from being exposed, which can prevent fiber damage and affect the transmission of optical signals.

In FIG. 11, taking two fiber connectors 401 as an example, in fact, the number of fiber connectors 401 is two. One or more, the number is not limited to the number shown in FIG.

2, the second optional implementation

FIG. 12 shows a second alternative implementation of the first embodiment.

The WDM device 402 of the first embodiment can include a WDM filter.

The WDM filter can perform wavelength division multiplexing processing on each group of optical signals received by the optical fiber connector 401, and output optical signals including multiple sets of wavelengths obtained by wavelength division multiplexing processing through the connected optical fibers; The received optical signals including the plurality of sets of wavelengths are demultiplexed, and the optical signals of each set of wavelengths obtained by the demultiplexing process are transmitted through the optical fiber connector 401 for transmitting the optical signals of the set of wavelengths.

The second alternative implementation of the first embodiment integrates the fiber optic connector 401 before and/or after the wavelength division multiplexing process with the WDM device 402, wherein the WDM device 402 has a WDM filter built therein. This solution enables the integration of the fiber optic connector 401 with the WDM device 402, effectively reducing the size of the optical device 40 without taking up extra space.

In addition, after the fiber connector 401 is integrated with the WDM device 402, the fiber between the fiber connector 401 and the WDM device 402 can be prevented from being exposed, which can prevent fiber damage and affect the transmission of optical signals.

In Fig. 12, taking two fiber joints 401 as an example, the number of the fiber joints 401 is actually two or more, and the number is not limited to the number shown in Fig. 12.

In Fig. 11 and Fig. 12, the fiber connector 401 can also be connected to a calibrator for converting the divergent light received from the fiber connector 401 into parallel light and then transmitting it to the WDM filter, and/or the WDM filter. The received parallel light is converted into concentrated light and injected into the fiber joint 401.

The second optional implementation described above is compared with the first alternative implementation. Since the optical fiber connector adapter is generally large in size and integrated in the WDM device 402, the size of the WDM device 402 is also large. The second alternative implementation reduces the volume of the WDM device 402 and thus further reduces the volume of the optical device 40.

FIG. 13 shows an optical transmission system according to Embodiment 1. As can be seen from FIG. 13, the optical transmission system includes: an optical line terminal 403, and a wavelength of an optical signal transmitted by a plurality of ports provided by the optical line terminal 403. Different (in which the optical signals transmitted by some of the multiple ports may have the same wavelength, The optical signals transmitted by all the ports of the plurality of ports are not completely identical in wavelength; the optical distribution network 404 is configured to split the optical signals from the optical line terminals 403 and send them to the optical network units 405, and The optical signal of the optical network unit 405 is combined and sent to the optical line terminal 403. The optical network unit 405 is configured to receive the optical signal after the split processing from the optical distribution network 404, and send the optical signal to the optical distribution network. 404 performs a combining process; the optical transmission system further includes an optical device 40, and each of the plurality of optical fiber connectors 401 of the optical device 40 is respectively plugged into a port provided by the optical line terminal 403, and receives the port from the port. a set of wavelength optical signals, and transmitting a set of wavelength optical signals to the port; the optical device 40 transmits the optical signals including the plurality of sets of wavelengths obtained by wavelength division multiplexing processing to the optical distribution network 404, and receives the optical distribution The network 404 contains multiple sets of wavelengths of optical signals.

In the optical transmission system, the optical fiber connector 401 and the WDM device 402 are integrated in the optical device 40, effectively reducing the volume of the optical device 40 without taking up extra space. Further, the optical fiber connected between the optical fiber connector 401 and the WDM device 402 can be prevented from being exposed, which can prevent the optical fiber from being damaged and affect the transmission of the optical signal.

[Embodiment 2]

FIG. 14 is a schematic structural view of Embodiment 2 of the present application. As shown in FIG. 14, the optical device 140 of the second embodiment includes a fiber optic connector 1401 and at least one fiber optic connector 1402 coupled to the fiber optic connector 1401.

The fiber connector 1402 transmits a group of optical signals of a plurality of wavelengths. If a plurality of fiber connectors 1402 are present, the wavelengths of the optical signals transmitted by the different fiber connectors 1402 are different.

The fiber optic connector 1401 transmits a set of wavelength optical signals that are respectively coupled to the fiber optic connector 1402 to transmit optical signals comprising sets of wavelengths.

The fiber connector 1401 includes a wavelength division multiplexing WDM device 1403. The WDM device 1403 can perform wavelength division multiplexing on a group of wavelength optical signals received by the fiber connector 1401 and a group of wavelength optical signals received from the fiber connector 1402 connector. The optical signals of the plurality of groups of wavelengths obtained after the wavelength division multiplexing processing are sent out; the received optical signals containing the plurality of sets of wavelengths may be demultiplexed, and the optical signals of each group of wavelengths obtained by the demultiplexing process are respectively It is sent out through the corresponding specific fiber connector.

Wherein, the corresponding specific fiber connector is a fiber connector for transmitting the optical signals of the group of wavelengths among the plurality of fiber connectors including the fiber connector 1401 and the at least one fiber connector 1402.

The fiber optic connector 1401 incorporates a wavelength division multiplexing WDM device 1403, which effectively reduces the size of the optical device 140 without taking up extra space.

In addition, the WDM device 1403 is built in the fiber connector 1401, so that the fiber connected between the fiber connector 1401 and the fiber connector 1402 and the WDM device 1403 can be prevented from being exposed, which can prevent the fiber from being damaged and affecting the transmission of the optical signal.

Alternatively, the WDM device 1403 may include a WDM filter and a fiber splice adapter connected to the WDM filter (refer to the internal structure of the WDM device 402 in FIG. 11).

The WDM filter can perform wavelength division multiplexing on the optical signals of each group of wavelengths received by the fiber connector 1401 and the at least one fiber connector 1402, and send the optical signals including the plurality of groups of wavelengths obtained by the wavelength division multiplexing processing to the fiber connector. The optical signal of the plurality of sets of wavelengths from the optical fiber connector adapter may be demultiplexed, and the optical signals of each set of wavelengths obtained by the demultiplexing process are sent out through the corresponding specific optical fiber joints.

Alternatively, WDM device 1403 may include other fiber optic connectors, which may or may not be part of optical device 140. Other fiber connectors can receive wavelength-multiplexed optical signals of multiple sets of wavelengths after WDM filter output, and transmit received optical signals containing multiple sets of wavelengths through other fiber connectors; or receive other optical fiber connectors. The optical signal includes a plurality of sets of wavelengths, and the received optical signals including the plurality of sets of wavelengths are sent to the WDM filter.

Optionally, the WDM device 1403 can have a built-in WDM filter and a fiber splice adapter, and the fiber splice adapter can be directly connected to the backbone fiber.

Alternatively, the WDM device 1403 may also include a WDM filter, but does not include a fiber optic connector adapter. The WDM filter is coupled to the fiber connector 1401 and the at least one fiber connector 1402, and the WDM filter can receive the fiber connector 1401 and the fiber connector 1402. Each set of wavelengths of the optical signal is subjected to wavelength division multiplexing processing, and the optical signals including the plurality of sets of wavelengths obtained by the wavelength division multiplexing processing are output through the connected optical fibers; and the received optical signals including the plurality of sets of wavelengths may also be performed. Demultiplexing processing, will The optical signals of each group of wavelengths obtained by the demultiplexing process are respectively sent out through the corresponding specific fiber connectors. The internal structure of the WDM device 1403 can refer to the internal structure of the WDM device 402 shown in FIG.

When the WDM device 1403 has a fiber optic connector adapter built in, the fiber optic connector of the trunk fiber is inserted into the fiber connector adapter of the WDM device 1403 to complete the fiber connection;

When there is only a filter in the WDM device 1403, the fiber needs to be taken out from the WDM device 1403. The fiber can be connected to other fiber connectors, and the other fiber connectors to be connected need to be connected to the backbone fiber through a separate fiber connector.

When the WDM device 1403 does not include a fiber optic splice adapter, the size of the fiber splice 1401 can be effectively reduced.

The WDM device in the second embodiment is connected, multiplexed, and demultiplexed. Referring to the related description in the first embodiment, the optical signals before and after the multiplexing processing and before and after the demultiplexing processing are referred to FIG. 5 in the first embodiment.

In FIG. 14, taking one fiber optic connector 1402 as an example, in practice, optical device 140 can include one or more fiber optic splices 1402.

FIG. 15 shows an optical transmission system provided in Embodiment 2. As can be seen from FIG. 15, the optical transmission system includes an optical line terminal 1404, and the optical signals transmitted by the plurality of ports provided by the optical line terminal 1404 have different wavelengths (wherein the optical signals transmitted by some of the plurality of ports may be transmitted) The wavelengths of the optical signals transmitted by all the ports of the plurality of ports are not completely the same. The optical distribution network 1405 is configured to perform the branching process on the optical signals from the optical line terminals 1404 and send them to the optical network units 1406. And the optical signals from the optical network units 1406 are combined and sent to the optical line terminal 1404. The optical network unit 1406 is configured to receive the optical signals after the shunt processing from the optical distribution network 1405, and send the optical signals. The optical distribution network 1405 is combined for processing; the optical transmission system further includes an optical device 140, and each of the plurality of optical fiber connectors including the optical fiber connector 1401 of the optical device 140 and the plurality of optical fiber connectors 1402 are respectively plugged in An optical line terminal 1404 provides a port for receiving a set of wavelength optical signals from the port and transmitting a set of wavelength optical signals to the port; the optical device 14 0 transmitting optical signals including multiple sets of wavelengths obtained by wavelength division multiplexing processing to light Distribution network 1405 receives and receives optical signals from a plurality of sets of wavelengths from optical distribution network 1405.

In the optical transmission system, after the fiber connector 1401 has the built-in WDM device 1403, it is integrated with the plurality of fiber connectors 1402 in the optical device 140, effectively reducing the volume of the optical device 140 without occupying extra space. Further, it is possible to prevent the fiber connected between the fiber connector including the fiber connector 1401 and the plurality of fiber connectors 1402 and the WDM device 1403 from being exposed, thereby preventing the fiber from being damaged and affecting the transmission of the optical signal.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in a block or blocks of a flow or a flow and/or a block diagram of a flowchart Step.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the invention without departing from the spirit and scope of the embodiments of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims (12)

An optical device, comprising: a plurality of first fiber optic connectors, and a wavelength division multiplexing WDM device coupled to the plurality of first fiber optic connectors, the plurality of first fiber optic splices being mounted on the WDM On the device; Each of the plurality of first fiber optic connectors is configured to transmit a set of wavelengths of optical signals, and different first fiber optic connectors transmit optical signals having different wavelengths; The WDM device is configured to perform wavelength division multiplexing processing on each set of optical signals received by the plurality of first optical fiber connectors, and output optical signals including multiple sets of wavelengths obtained after wavelength division multiplexing processing, and And demultiplexing the received optical signals including the plurality of sets of wavelengths, and transmitting the optical signals of each set of wavelengths obtained by the demultiplexing process through the first optical fiber connector for transmitting the optical signals of the set of wavelengths respectively. . The optical device of claim 1 wherein said WDM device comprises: a WDM filter and a fiber optic splice adapter coupled to said WDM filter; The WDM filter is connected to the plurality of first fiber connectors for: Performing wavelength division multiplexing processing on each group of wavelengths of optical signals received by the plurality of first fiber optic connectors, and transmitting optical signals including multiple sets of wavelengths obtained by wavelength division multiplexing processing to the fiber optic connector adapter; and /or Demultiplexing an optical signal comprising a plurality of sets of wavelengths from the optical fiber connector adapter, and passing the optical signals of each set of wavelengths obtained by the demultiplexing process through a first optical fiber connector for transmitting the optical signals of the set of wavelengths Send out The fiber optic connector adapter provides an interface for connecting a second fiber optic connector for: Receiving, by the WDM filter, a wavelength division multiplexed optical signal comprising a plurality of sets of wavelengths, and transmitting the received optical signal comprising the plurality of sets of wavelengths through the second optical fiber connector; and/or Receiving optical signals from the second fiber optic connector comprising a plurality of sets of wavelengths, and transmitting the received optical signals comprising the plurality of sets of wavelengths to the WDM filter. The optical device according to claim 1, wherein said WDM device comprises: a WDM filter, said WDM filter being coupled to said plurality of first fiber connectors for: Performing wavelength division multiplexing processing on each group of optical signals received by the plurality of first fiber optic connectors, and outputting optical signals including multiple sets of wavelengths obtained by wavelength division multiplexing processing through the connected optical fibers; and/or The received optical signals including the plurality of sets of wavelengths are demultiplexed, and the optical signals of each set of wavelengths obtained by the demultiplexing process are respectively sent out through the first optical fiber connector for transmitting the optical signals of the set of wavelengths. The optical device according to any one of claims 1 to 3, wherein The relative position between the plurality of first fiber optic connectors can vary. The optical device according to claim 4, wherein the WDM device is provided with a sliding slot, and the plurality of first optical fiber connectors are installed in the sliding slot, and the position of the sliding slot is adjustable. The optical device according to any one of claims 1 to 3, wherein The relative position between the plurality of first fiber optic connectors is fixed. The optical device according to claim 6 wherein: The plurality of first fiber optic connectors have an integral structure with the WDM device. An optical transmission system comprising: An optical line terminal, wherein the optical signals transmitted by the plurality of ports provided by the optical line terminal have different wavelengths; An optical distribution network, configured to perform split processing on the optical signal from the optical line terminal, send the optical signal to each optical network unit, and combine the optical signals from the optical network units to the optical line terminal. ; The optical network unit is configured to receive the optical signal after the shunt processing from the optical distribution network, and send the optical signal to the optical distribution network for combining processing; The optical transmission system further comprising the optical device according to any one of claims 1 to 7, wherein each of the plurality of first optical fiber connectors of the optical device is respectively inserted in the optical device Receiving a set of wavelength optical signals from the port on a port provided by the optical line terminal to And transmitting, to the port, a set of optical signals of a plurality of wavelengths; the optical device transmitting, by the wavelength division multiplexing process, an optical signal comprising a plurality of sets of wavelengths to the optical distribution network, and receiving the content from the optical distribution network Multiple sets of wavelengths of optical signals. An optical device, comprising: a third fiber optic connector, and at least one fourth fiber optic connector coupled to the point fiber optic connector; Each of the at least one fourth fiber optic splice is configured to transmit a set of wavelengths of optical signals, and if there are a plurality of fourth fiber optic splices, the optical signals transmitted by the different fourth fiber optic splices have different wavelengths; The third fiber optic connector incorporates a wavelength division multiplexed WDM device, the WDM device for: Performing wavelength division multiplexing processing on the optical signals of the group of wavelengths received by the third fiber optic connector and the optical signals received from the at least one fourth fiber optic connector, and the wavelength division multiplexing process comprises multiple sets of wavelengths Optical signals are sent out; and/or The received optical signals including the plurality of sets of wavelengths are demultiplexed, and the optical signals of each set of wavelengths obtained by the demultiplexing process are respectively sent out through corresponding specific optical fiber connectors, and the corresponding specific optical fiber joints are included a fiber optic connector for transmitting optical signals of the set of wavelengths among the plurality of fiber optic connectors, including the third fiber optic connector and the at least one fourth fiber optic connector. The optical device according to claim 9, wherein said WDM device comprises: a WDM filter and a fiber optic splice adapter coupled to said WDM filter; The WDM filter is used to: Performing wavelength division multiplexing processing on each group of optical signals received by the third fiber connector and the at least one fourth fiber connector, and transmitting optical signals including multiple sets of wavelengths obtained by wavelength division multiplexing processing to The fiber optic connector adapter; and/or Performing a demultiplexing process on the optical signal comprising the plurality of sets of wavelengths from the optical fiber connector adapter, and transmitting, by using the corresponding optical fiber connector, the optical signals of each set of wavelengths obtained by the demultiplexing process; The fiber optic connector adapter provides an interface for connecting a fifth fiber optic connector for: Receiving a wavelength division multiplexing process of the WDM filter output, comprising multiple sets of wavelengths of optical signals And transmitting the received optical signal comprising a plurality of sets of wavelengths through the fifth optical fiber connector; and/or Receiving optical signals from the fifth fiber optic connector comprising a plurality of sets of wavelengths, and transmitting the received optical signals comprising the plurality of sets of wavelengths to the WDM filter. The optical device according to claim 9, wherein said WDM device comprises: a WDM filter, said WDM filter being coupled to said third fiber connector and said at least one fourth fiber connector, : Performing wavelength division multiplexing processing on each set of optical signals received by the third fiber joint and the at least one fourth fiber joint, and passing the optical signals including the plurality of sets of wavelengths obtained by wavelength division multiplexing processing Connected fiber output; and/or The received optical signals including the plurality of sets of wavelengths are demultiplexed, and the optical signals of each set of wavelengths obtained by the demultiplexing process are respectively sent out through the corresponding specific optical fiber connectors. An optical transmission system comprising: An optical line terminal, wherein the optical signals transmitted by the plurality of ports provided by the optical line terminal have different wavelengths; An optical distribution network, configured to perform split processing on the optical signal from the optical line terminal, send the optical signal to each optical network unit, and combine the optical signals from the optical network units to the optical line terminal. ; The optical network unit is configured to receive the optical signal after the shunt processing from the optical distribution network, and send the optical signal to the optical distribution network for combining processing; The optical transmission system further comprising the optical device according to any one of claims 9 to 11, comprising the third optical fiber connector of the optical device and the plurality of fourth optical fiber connectors Each of the plurality of fiber optic connectors is respectively plugged into a port provided by the optical line terminal, receives a set of wavelength optical signals from the port, and transmits a set of wavelength optical signals to the port; The optical device transmits the optical signals including the plurality of sets of wavelengths obtained after the wavelength division multiplexing processing to the optical distribution network, and receives optical signals including a plurality of sets of wavelengths from the optical distribution network.

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