Cassette PLC Splitter is an integrated waveguide optical power distribution device based on a quartz substrate with small size, wide operating wavelength range, high reliability, and good splitting uniformity, etc. It is especially suitable for connecting local and terminal equipment in passive optical networks (EPON, BPON, GPON, etc.) and realizing the splitting of optical signals. There are two types of 1×N and 2×N. 1×N and 2×N splitters input optical signals evenly from a single or double inlets to multiple outlets, or work in reverse to converge multiple optical signals into a single or double fiber.