Tunable Edge Filters

Tunable edge filter is a customized product. It usually belongs to 2-port optical tunable filter product platform. Instead of using narrow bandpass filter in the 2-port tunable optical filter, the tunable edge filter utilizes a low-pass or long-pass interference filter. By changing the incident angle of the light beam, the cut-off wavelength will be tuned. The typical performance of a long-pass tunable edge filter is shown below. Standard Tunable edge filters support C-band or L-band wavelength range.