Newport’s wide range of Optical Fiber Coupler and Wavelength Division Multiplexer (WDM) products 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.
Single wavelength couplers provide optimal performance at center wavelengths of 633, 780, 850, 1310, or 1550 nm. Wavelength flattened fiber couplers extend the optimal wavelength range to a band of ±40 nm around center wavelengths of 1310 or 1550 nm.
Broadband couplers are operational over both the 1310 and 1550 nm windows. 1x2 and 2x2 couplers are available with coupling ratios of 50/50 (3 dB fiber optic couplers) and 10/90 (10% couplers). 1x4, 1x8 and 1x16 couplers are also available.
Single-mode tap couplers are designed for use in Erbium-Doped Fiber Amplifiers (EDFAs), and offer superb insertion loss and wavelength dependence. These components are 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. Coupling ratios of 1% and 3% are available.
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 ...

Newport’s wide range of Optical Fiber Coupler and Wavelength Division Multiplexer (WDM) products 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.
Single wavelength couplers provide optimal performance at center wavelengths of 633, 780, 850, 1310, or 1550 nm. Wavelength flattened fiber couplers extend the optimal wavelength range to a band of ±40 nm around center wavelengths of 1310 or 1550 nm.
Broadband couplers are operational over both the 1310 and 1550 nm windows. 1x2 and 2x2 couplers are available with coupling ratios of 50/50 (3 dB fiber optic couplers) and 10/90 (10% couplers). 1x4, 1x8 and 1x16 couplers are also available.
Single-mode tap couplers are designed for use in Erbium-Doped Fiber Amplifiers (EDFAs), and offer superb insertion loss and wavelength dependence. These components are 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. Coupling ratios of 1% and 3% are available.
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. The latter two models 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, used on WDMs and 1x2 and 2x2 couplers at 633, 780, and 850 nm, consists of a stainless steel outer housing from which 1 m long, 900 µm buffered fibers exit through molded strain relief boots. All other couplers feature a fully ruggedized black plastic housing with 1 m long, 3 mm PVC covered pigtails. All standard models come non-terminated. For termination options, refer to Ordering Information.
For multimode fiber couplers, see Fiber Optic Couplers, Multimode.