Fiber Optical Splitter: How PLC Splitters Work in Passive Optical Networks PON

Oct 20, 2026 Leave a message

Passive optical network (PON) is the mainstream architecture of modern FTTH broadband construction, and it relies on fiber optical splitter to divide one input optical signal into multiple outputs, enabling one optical line terminal to serve dozens of home users. PLC splitter is the dominant type in modern FTTH systems, featuring stable performance, small size and wide wavelength working range. Different from active network equipment, PLC splitters work without power supply, which greatly cuts power consumption and reduces failure points of the whole PON network. For large-scale community broadband rollout, PLC fiber optical splitter helps operators save equipment investment and simplify network layout.

 

Working Principle of PLC Fiber Optical Splitter

 

Planar Lightwave Circuit (PLC) splitter uses chip-based light splitting technology. Unlike old fused biconical taper splitters, PLC splitter maintains even signal power across all output ports. Popular split ratios include 1×4,1×8,1×16 and 1×32 for different network scale demands. Even signal distribution ensures each end user gets balanced optical power, avoiding the problem that some households have weak broadband signal while others receive strong signals.

 

Installation Tips for Rack and Box Type PLC Splitter

 

PLC fiber optical splitter can be packaged as steel tube type, cassette type or rack mount module. Cassette splitters fit inside fiber distribution boxes for street side ODP deployment. Keep connectors clean during installation to avoid contamination causing signal loss. During regular maintenance, technicians should inspect port dust and check port power value to ensure stable signal distribution.

PLC fiber optical splitter is the heart of passive FTTH network. We offer full range split ratio PLC splitters with test reports for telecom operators and network integrators.