Distributed PLC Systems: Fiber optic links connect remote I/O racks and edge devices to the main PLC CPU. Smart Factory Networks: Optical modules integrate PLCs with industrial Ethernet switches, HMIs, SCADA, and IIoT gateways. Modern Programmable Logic Controllers (PLCs) are central to industrial automation, controlling machinery, production lines, and complex processes. As automation systems evolve toward distributed architectures and smart factories, high-speed and long-distance communication between PLC modules. One of the key components in fiber optic systems is the PLC (Planar Lightwave Circuit) splitter. Renowned for its precision and reliability, the PLC splitter plays a vital role in optimizing the distribution of optical signals across various network configurations.