The Planar lightwave circuit splitter (PLC Splitter) is a state-of-the-art integrated lightwave optical power distribution device built on a quartz substrate. One of its key attributes is the minimal splitter loss in optical fiber, ensuring efficient signal distribution with low optical fiber splitter loss. This device boasts a plethora of features, including a compact structural design, a wide operating wavelength range, high reliability, low insertion loss, and low polarization dependent loss, coupled with excellent channel uniformity. These characteristics make it particularly suitable for the connection between central offices and terminal equipment in Passive Optical Networks (BPON, EPON, GPON, etc.), facilitating the effective and loss-minimized distribution of optical signals.