Wavelength Flattened Couplers are small and insensitive to operating wavelengths. Because of that they are suitable for use in instrumentation, DWDM systems, trunk/loop branching, and CATV distribution. Their low optical loss and high directivity make them an excellent choice for systems with power constraints. Devices can be optimized at either 1310nm, 1550nm or custom wavelenghts. Available in a variety of coupling ratios.

Wavelength Dependence

Specifications based on 50/50 coupling ratio   Series 1 Series 2 Insertion Loss ≤ 3.4dB ≤ 3.7dB Uniformity ≤ 0.6dB ≤ 1.0dB Typical Thermal Stability ≤±0.1dB Typical Polarization Stability ≤±0.1dB Typical Directivity 2X2 ≥65dB 1X2 ≥40dB 1X2 ≥60dB (with LRT)

Coupling Ratio/Insertion Loss Chart Desired Split Ratio Insertion Loss (dB) SERIES 1 SERIES 2 50/50 3.4 3.7 40/60 4.5/2.6 4.8/2.8 30/70 5.8/2.0 6.1/2.0 20/80 7.7/1.3 8.0/1.3 10/90 11.2/0.8 12.9/0.8 5/95 14.6/0.4 18.4/0.5 1/99 23.0/0.2 23.0/0.3

Options
Low Reflection Termination(LRT):	External LRT on the unused port (>/= 60 dB)
Wavelengths:	1310nm or 1550nm
Packaging:	Available in package 12 and can be repackaged into styles 22, 25, 31 and modular boxes. Click on links below for more details on packages and connectors

Ordering Information