The PLC splitter is a kind of integrated waveguide optical power distribution device based on quartz substrate. It has the characteristics of small volume, wide operating wavelength range, high reliability, good uniformity of spectrophotometer and so on. For passive optical network (EPON, BPON, GPON, etc.) to connect the central office and terminal equipment and to achieve optical signal shunt. The 1xN and 2xN splitters evenly divide the optical signal into multiple outlets evenly from a single or dual inlet, or vice versa, to import multiple optical signals into a single or two root fiber.