Newport’s wide range of Fiber Optic Coupler and WDM for wavelength division multiplexing have been developed using fused fiber technology. The optical fiber couplers allow bi-directional coupling and can be used to either split or combine signals.

The single-mode tap coupler (1% coupling) is designed for use in Erbium-Doped Fiber Amplifiers (EDFAs), and offer superb insertion loss and wavelength dependence. It is ideal for use as input and output power monitors in applications in power and pre-amplifiers, and repeaters where signal insertion loss minimization and tap ratio wavelength independence are vital.

Single-mode WDMs are used to separate or combine optical signals at the indicated operating wavelengths, allowing bi-directional communications on a single fiber. WDMs offer high isolation between the two wavelengths with low excess loss. Newport’s WDMs are available for 1310/1550 nm. 

These products are used extensively in EDFA applications, to efficiently combine the pump input (980 or 1480 nm) with signals in the 1550 nm transmission window.
A semi-ruggedized housing consists of a stainless steel outer housing from which 1 m long, 900 µm buffered fibers exit through molded strain relief boots. All standard models come non-terminated. For termination options, refer to Ordering Information.

For single mode fiber optic couplers Fiber Optic Couplers, Singlemode, 1x4, 1x8, 1x16 and for multimode couplers see Fiber Optic Couplers, Multimode. For doped fibers, see Rare Earth Doped Fibers-Ytterbium, Erbium, Neodymium.