Classification and functions of fiber optic couplers

Optical fiber coupler (Coupler), also known as splitter (Splitter), connector, adapter, flange, is a component used to split/combine optical signals or extend optical fiber links. It belongs to the field of optical passive components , will be applied in telecommunications networks, cable TV networks, user loop systems, and regional networks.Fiber optic couplers can be divided into: standard couplers (waveguide type, double branches, unit 1×2, which divides the optical signal into two powers) direct-connect couplers (connecting 2 fibers of the same or different types of fiber interfaces, To extend the optical fiber link) star/tree couplers and wavelength multiplexers (WDM, if the wavelengths are split at high density, that is, the wavelength spacing is narrow, it is DWDM). The production methods include sinter (Fuse) and micro-optical type. There are three types: (Micro Optics) and optical waveguide (Wave Guide), and the sintering method accounts for the majority (about 90%).The sintering method is to melt.

According to the different coupled optical fibers, it is classified as follows: SC optical fiber coupler is used in SC optical fiber interface. It looks very similar to RJ-45 interface, but SC interface is flatter. The obvious difference is the contact piece inside. If it is The 8 thin copper contacts are the RJ-45 interface, and if it is a copper pillar, it is the SC fiber optic interface.The LC fiber optic coupler is used in the LC fiber optic interface to connect the connector of the SFP module. It is made with an easy-to-operate modular jack (RJ) latch mechanism.(Commonly used in routers) FC fiber optic coupler is used in FC fiber optic interface. The external reinforcement method is a metal sleeve and the fastening method is a screw buckle.Generally used on the ODF side (most commonly used on patch panels) ST fiber optic couplers are used in ST fiber interfaces and are commonly used in fiber patch panels. The shell is round and the fastening method is a screw buckle.Optical fiber coupler is a device fo