In a PLC (Planar Lightwave Circuit) splitter, each port incurs a typical insertion loss depending on the split ratio. For example, an ideal 1x2 splitter has around 3.5 dB loss per port, while a 1x4 splitter has about 7 dB, and a 1x8 splitter has around 10.5 dB per port. Real-world losses may vary slightly due to manufacturing and connector quality, but these values provide a general reference for typical PLC splitter loss per port.