Operating Wavelength: 1310+/-40, 1550+/-40 ORTE can provide 1x4 fiber optic coupler module, single-mode/multi-mode 1×N coupler, Wideband Optical Coupler Module, and other customizable coupler MODULEs. 1*N Coupler Modules from ORTE have the following features: low excess loss, high isolation, low PDL, compact design, high stability and reliability, and can be applied to coupler system and CATV network.