CN204116653U - A kind of joints of optical fibre - Google Patents

Abstract

The utility model is a kind of joints of optical fibre, include metal tailstock pedestal, along metal tailstock block body axis to offering ladder hole, ladder hole is connected in sequence by ceramic insertion core hole and optic fibre hole, optic fibre hole aperture is less than aperture, ceramic insertion core hole, ceramic insertion core is fitted with ceramic insertion core in hole, plug-in mounting optical fiber in optic fibre hole, epoxide-resin glue is filled with in gap between optical fiber and optic fibre hole, it is characterized in that: described optic fibre hole is connected to form successively by first stage optic fibre hole and subordinate phase optic fibre hole, the aperture of described first stage optic fibre hole is greater than subordinate phase optic fibre hole aperture, the utility model structure is simple, and reliability is high, is mainly used among optical communication.

Description

A fiber optic connector

technical field

The utility model relates to the technical field of optical communication equipment, in particular to an optical fiber connector.

Background technique

At present, the ceramic ferrule metal tailstocks used in optical communication products are all in the form of single-step through holes (see Figure 1-Figure 3), the ceramic ferrule hole adopts interference fit, and the optical fiber hole adopts clearance fit. However, optical communication products made of this structure are prone to shrinkage of the outer layer of the optical fiber and falling off of the epoxy resin under the conditions of temperature cycle, high temperature and high humidity, or tension, which will cause the package inside the optical fiber Layers are prone to cracks, fractures and other undesirable phenomena at the end cone of the ceramic ferrule.

Contents of the invention

The purpose of this utility model is to improve the above-mentioned problems existing in the existing ceramic pin metal tailstock, and to provide a fiber optic connector with simple structure and high reliability.

The specific scheme of the utility model is: an optical fiber connector, including a metal tailstock body, and a stepped through hole is opened along the axial direction of the metal tailstock body, and the stepped through hole is connected by a ceramic ferrule hole and an optical fiber hole in sequence. The aperture of the fiber hole is smaller than the aperture of the ceramic ferrule hole, the ceramic ferrule is inserted in the ceramic ferrule hole, the optical fiber is inserted in the fiber hole, and the gap between the optical fiber and the fiber hole is filled with epoxy resin glue, which is characterized in that : The fiber hole is composed of a first-stage fiber hole and a second-stage fiber hole connected in sequence, and the aperture of the first-stage fiber hole is larger than the second-stage fiber hole.

In order to make the connection of the ceramic ferrule stronger under force, the hole depth of the ceramic ferrule described in the utility model is 2.6-2.8mm.

In order to make the optical fiber connection more stable and reliable, the depth of the optical fiber hole in the first stage of the utility model is 4-7mm, and the depth of the optical fiber hole in the second stage is 2-4mm.

Beneficial effects obtained by the utility model: in the structure of the utility model, since the metal tailstock with the stepped hole structure composed of the first-stage optical fiber hole and the second-stage optical fiber hole is adopted, the epoxy resin glue for fixing the optical fiber in the metal tailstock can be It forms a step shape. Under conditions such as temperature cycle, high temperature and high humidity, or tension, the step-shaped epoxy resin will not fall off with the shrinkage of the optical fiber, thereby protecting the optical fiber and improving the reliability of optical communication products.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of a traditional optical fiber connector;

Fig. 2 is a schematic diagram of the main section structure of the metal tailstock body in Fig. 1;

Fig. 3 is a schematic diagram of the structure in the left view direction of Fig. 2;

Fig. 4 is a schematic diagram of the overall structure of the utility model;

Fig. 5 is a schematic diagram of the main sectional structure of the metal tailstock body in Fig. 4 .

In the figure: 1—ceramic ferrule, 2—traditional ceramic ferrule metal tailstock body, 3—epoxy resin glue, 4—optical fiber, 5—ceramic ferrule hole, 6—traditional optical fiber hole, 7—metal tailstock pedestal body, 8—fiber hole of the first stage, 9—fiber hole of the second stage.

Detailed ways

Referring to Fig. 4-Fig. 5, the utility model is an optical fiber connector, which includes a metal tailstock body 7, and a stepped through hole is opened along the axial direction of the metal tailstock body, and the stepped through hole is composed of a ceramic ferrule hole 5 and a The optical fiber holes are connected in sequence, the aperture of the optical fiber hole is smaller than the aperture of the ceramic ferrule hole, the ceramic ferrule 1 is inserted in the ceramic ferrule hole, the optical fiber 4 is inserted in the fiber hole, and the gap between the optical fiber and the fiber hole is filled with a ring Oxygen resin glue 3, the optical fiber hole is composed of the first-stage optical fiber hole 8 and the second-stage optical fiber hole 9 connected in sequence, and the aperture of the first-stage optical fiber hole 8 is larger than the aperture of the second-stage optical fiber hole 9 .

In order to make the connection of the ceramic ferrule stronger under force, the depth of the holes 5 of the ceramic ferrule in this embodiment is 2.6-2.8 mm.

In order to make the optical fiber connection more stable and reliable, the first-stage fiber holes 8 are 4-7 mm deep, and the second-stage optical fiber holes 9 are 2-4 mm deep.

In this embodiment, the size of the ceramic ferrule aperture, the first-stage optical fiber aperture and the second-stage optical fiber aperture can be adjusted according to the actual situation, but it does not affect the essential principle of the utility model, so they all fall into the protection scope of the utility model .

Claims (3)

1. joints of optical fibre, include metal tailstock pedestal, along metal tailstock block body axis to offering ladder hole, ladder hole is connected in sequence by ceramic insertion core hole and optic fibre hole, optic fibre hole aperture is less than aperture, ceramic insertion core hole, ceramic insertion core is fitted with ceramic insertion core in hole, plug-in mounting optical fiber in optic fibre hole, epoxide-resin glue is filled with in gap between optical fiber and optic fibre hole, it is characterized in that: described optic fibre hole is connected to form successively by first stage optic fibre hole and subordinate phase optic fibre hole, and the aperture of described first stage optic fibre hole is greater than subordinate phase optic fibre hole aperture.

2. a kind of joints of optical fibre according to claim 1, is characterized in that: described ceramic insertion core hole hole depth is 2.6-2.8mm.

3. a kind of joints of optical fibre according to claim 1, is characterized in that: described first stage optic fibre hole hole depth is 4-7mm, and subordinate phase optic fibre hole hole depth is 2-4mm.