What Is Fiber-Optic Coupling?

Optical fiber communication coupler is a device that can make the optical signal in transmission couple in the coupling area of the special structure and redistribute it. During the coupling process, the spectral component of the signal does not change, only the optical power of the signal changes. The optical fiber coupler can extract a certain amount of power from the transmission line to realize the monitoring of the line. It can also be used in the fields of optical fiber CATV, optical fiber user network, passive optical network (PON), optical fiber sensing, etc. With allocation. ^[1]