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The Basic Structure Of The Fiber Optic Connector

Oct 27, 2017

Fiber optic connector is a commonly used connector product, for fiber interchangeable plug-in connection device, also known as fiber optic connector, for high-capacity high-speed transmission system, also requires a small reflection.

Definition of fiber optic connectors

When installing any fiber optic system, it is necessary to consider connecting the optical fiber or the cable to each other in a low-loss manner to realize the connection of the optical link. Fiber-optic link of the connection, but also can be divided into two kinds of permanent and active. Permanent connection, Fiber Optic Connector most of the use of welding, bonding or fixed connector to achieve; active connection, the general use of the activities of the connector to achieve. This article will be a brief introduction to the activities of the connector. In the case of

Optical fiber connector, commonly known as the union, commonly known as fiber optic connector, is used to connect two optical fibers or optical cable to form a continuous optical path can be reused passive devices, Fiber Optic Connector has been widely used in optical fiber transmission lines, fiber patch panels And fiber test equipment, instrumentation, is currently the largest number of optical passive devices.

The main purpose of fiber optic connectors is to achieve fiber connections. Now widely used in optical fiber communication system in the optical fiber connector, its many types, different structures. However, the basic structure of various types of fiber optic connectors is consistent, that is, Fiber Optic Connector the vast majority of fiber optic connectors generally use high-precision components (by two pins and a coupling tube composed of three parts) Alignment of the fiber.

This method is to penetrate and fixed the fiber in the pin, and the pin surface after polishing, in the coupling tube to achieve alignment. The outer part of the pin is made of metal or nonmetal material. The butt end of the pin must be ground and the other end usually uses a bend limiting member to support the fiber or fiber optic cable to release the stress. The coupling pipe is usually made of ceramic, Fiber Optic Connector or bronze and other materials made of two semi-synthetic, fastened cylindrical components made of multi-metal or plastic with a flange, in order to facilitate the installation of the connector fixed. In order to precisely align the fiber, the pin and the coupling pipe processing precision is very high.

The main purpose of fiber optic connectors is to achieve fiber connections. Now widely used in optical fiber communication system in the optical fiber connector, its many types, different structures. However, Fiber Optic Connector the basic structure of various types of fiber optic connectors is consistent, that is, the vast majority of fiber optic connectors generally use high-precision components (by two pins and a coupling tube composed of three parts) Alignment of the fiber.

Performance of fiber optic connectors

Fiber optic connector performance, first of all optical performance, in addition to consider the optical fiber connector interchangeability, repeatability, tensile strength, temperature and the number of plug and so on.

(1) optical performance: optical fiber connector for the optical performance requirements, mainly the insertion loss and return loss of the two most basic parameters.

Insertion Loss (Insertion Loss) that is connected to the loss, is due to the introduction of the link caused by the link of the effective optical power loss. Insertion loss is as small as possible, Fiber Optic Connector the general requirements should not be greater than 0.5dB.

Return Loss (Return Loss) refers to the connector on the link optical power reflection inhibition, the typical value should not be less than 25dB. Practical application of the connector, Fiber Optic Connector the pin surface after a special polishing, you can make the return loss is greater, generally not less than 45dB.

(2) interchangeability, repeatability

Fiber optic connectors are generic passive devices that can be used in any combination for fiber optic connectors of the same type and can be used multiple times, resulting in additional losses typically less than 0.2 dB.

(3) Tensile strength

For the optical fiber connector, Fiber Optic Connector generally require its tensile strength should not be less than 90N.

(4) temperature

General requirements, fiber optic connectors must be -40oC ~ +70 o C temperature can be used normally.

(5) the number of plug

The current use of fiber optic connectors can generally plug in more than 1000 times.