CN210109393U

CN210109393U - High return loss optical fiber connector

Info

Publication number: CN210109393U
Application number: CN201921119377.3U
Authority: CN
Inventors: 吴小芳; 叶福林; 吴清辉
Original assignee: Haian Optical Communication Equipment Co Ltd
Current assignee: Haian Optical Communication Equipment Co Ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-02-21
Anticipated expiration: 2029-07-17

Abstract

A high return loss optical fiber connector comprises a tail handle and an insertion core, wherein the insertion core is inserted into one end of the tail handle; an optical fiber hole is formed in the insert core, and an optical fiber is arranged in the optical fiber hole; the end face of the inserting core and the end face of the optical fiber jointly form a connector end face, and the connector end face is an arc-shaped end face; the height difference between the end face of the ferrule and the end face of the optical fiber is retracted, and the size of the retraction is-20 nm. Compared with the prior art, the utility model discloses a high return loss fiber connector is the arc terminal surface through setting up the connector terminal surface, and the size control that contracts inwards of lock pin terminal surface and fiber end face is at-20 ~20nm, makes its return loss reach more than 55 dB.

Description

High return loss optical fiber connector

Technical Field

The utility model relates to a fiber connector technical field specifically indicates a high return loss fiber connector.

Background

The optical fiber connector is divided into FC, SC, LC and the like according to the structure, and is divided into PC, UPC and APC according to the connector inserting core surface forming structure; PC is a plane type, the return loss is 40dB, UPC is an arc surface shape, the return loss is 50dB, APC is an inverted 8-degree type, and the return loss is 55 dB; APC type connectors are commonly used in CATV networks, but are commonly marketed as UPC type jumpers;

at present, each telecom operator puts forward requirements on the geometric dimension of the end face of the ferrule of the connector, and two performance indexes, insertion loss and return loss of the jumper can be effectively guaranteed by ensuring that the dimension of the end face reaches the standard; one requirement of the end face size is that the height of the optical fiber is (100 to 50 nm), also called retraction, namely, the return loss of the jumper is caused by the retraction of the optical fiber, theoretically, the height of the optical fiber is 0, and the return loss of the jumper can reach more than 60 dB; at present, how to improve the return loss becomes a great problem to be solved urgently by various manufacturers.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above-mentioned prior art not enough, and provide a high return loss fiber connector.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a high return loss optical fiber connector comprises a tail handle and an insertion core, wherein the insertion core is inserted into one end of the tail handle; an optical fiber hole is formed in the insert core, and an optical fiber is arranged in the optical fiber hole; the end face of the inserting core and the end face of the optical fiber jointly form a connector end face, and the connector end face is an arc-shaped end face; the height difference between the end face of the ferrule and the end face of the optical fiber is retracted, and the size of the retraction is-20 nm.

Furthermore, the radius of the arc-shaped end face is 2.2-2.4 mm.

Furthermore, a reinforced sheath is arranged at the joint of the tail handle and the insertion core, and the reinforced sheath is integrally connected to the outer side of the tail handle.

Compared with the prior art, the utility model discloses a high return loss fiber connector is the arc terminal surface through setting up the connector terminal surface, and the size control that contracts inwards of lock pin terminal surface and fiber end face is at-20 ~20nm, makes its return loss reach more than 55 dB.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

the optical fiber connector comprises a connector body, a tail handle, an optical fiber, a connector end face, a reinforcing sheath, a pin head, a tail handle, a tail optical fiber, a connector end face and a connector end face, wherein 1 the pin head, 2 the tail handle, 3 the optical fiber, 4 the connector end.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1, a high return loss optical fiber connector includes a tail handle 1 and a ferrule 2, wherein the ferrule 2 is inserted into one end of the tail handle 1; an optical fiber hole is formed in the inserting core 2, and an optical fiber 3 is arranged in the optical fiber hole; the end face of the ferrule 2 and the end face of the optical fiber 3 jointly form a connector end face 4, and the connector end face 4 is an arc-shaped end face; the height difference between the end face of the ferrule 2 and the end face of the optical fiber 3 is retracted, and the retracted size is-20 nm.

In actual processing, the end part of the bare ferrule 2 without the optical fiber 3 is ground into an arc-shaped end face by abrasive paper, so that the radius of the end face of the arc-shaped end face is 2.2-2.4 mm; and then, the optical fiber is inserted into the ferrule 2 for polishing and grinding, the polishing and grinding only needs to be performed on the center of the optical fiber 2, the grinding force and time can be reduced, the retraction of the end face of the optical fiber 3 and the end face of the ferrule 2 is controlled to be-20 nm, and the return loss can reach more than 55 dB.

The joint of the tail handle 1 and the insertion core 2 is provided with a reinforced sheath 5, and the reinforced sheath 5 is integrally connected to the outer side of the tail handle 1.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications or changes without departing from the spirit of the present invention.

Claims

1. The utility model provides a high return loss fiber connector, includes caudal peduncle and lock pin, its characterized in that: the insertion core is inserted into one end of the tail handle; an optical fiber hole is formed in the insert core, and an optical fiber is arranged in the optical fiber hole; the end face of the inserting core and the end face of the optical fiber jointly form a connector end face, and the connector end face is an arc-shaped end face; the height difference between the end face of the ferrule and the end face of the optical fiber is retracted, and the size of the retraction is-20 nm.

2. A high return loss optical fiber connector according to claim 1, wherein: the radius of the arc-shaped end face is 2.2-2.4 mm.

3. A high return loss optical fiber connector according to claim 1, wherein: the joint of the tail handle and the insertion core is provided with a reinforced sheath, and the reinforced sheath is integrally connected to the outer side of the tail handle.