Fused Ultra Low Ratio Tap Coupler

The Ultra Low Ratio Tap Coupler splits a very small amount of light from a signal path to a tap port.

Suitable for very high optical power, it’s main application is in the monitoring of optical sources such as fibre lasers. Low tap ratios such as 0.1%, 0.01% or 0.001% enable the monitoring photodetector to operate without damage or saturation.

G&H proprietary manufacturing technology provides ultra-low loss in the signal path, thereby maximising optical power handling. Consistently high return loss (>55dB) reduces the amount of optical power reflected back along the input fibre. This helps the fibre laser operate in a stable manner.

Standard parts are available for wavelengths from 700 to 1599nm.

Key Features
・Tap ratio up to 50dB 
・High return loss 
・Ultra-low signal insertion loss 
・High power handling 
・Available at wide variety of laser wavelengths 
・Custom product