Cassette type PLC splitter for PON networks. ABS housing, compact design, low insertion loss, and high uniformity. Available with SC or LC connectors in UPC or APC polish. Corning's. In fiber-optic networks like FTTx and PON, PLC splitters are key components for distributing optical signals to multiple users. Insertion loss and return loss are two. put signal and delivers multiple output signals with specific phase and a power combiner simply by applying each signal singularly into each of the splitter out oss that varies depending upon the phase and amplitude relationship of the signals being combined. T PON standards such as GPON, XGS-PON and new 25 and 50G standards.