Planar Lightwave Circuit Splitter (PLC Splitters) is a kind of power splitter based on the integrated quartz baseplate with small size, wide operating wavelength range, high reliability, and good uniformity so on, especially suitable for passive optical network (EPON,BPON,GPON,etc.) to connect the central office and terminal equipment for achieving the branching of the optical signal.So far there are two types of PLC 1×N and 2×N Splitter .PLC 1×N and 2×N Splitter divide uniformly optical signals from one or two inputs to multiple outputs, and splitter can be operated in reverse direction to combine multiple signals into fiber or two fibers.