||Photop Koncent's production lines
and manufacturing services cover a full product range of fused fiber
couplers, including single mode fiber, multi-mode fiber and polarization
maintaining fiber couplers. Photop Koncent's coupler product series,
featured with extremely low insertion loss, wide band and polarization
independence, are widely used for EDFA, Signal Power and Channel Monitor,
Optical Performance Monitor (OPM) for intelligent optical networks
and transparent broadband transmission .