Investigation of tunable trap filter utilizing intense signal four wave mixing model in highly non-linear fiber

Tunable trap filter based on highly non-linear fiber (HNLF) utilizing degenerate four wave mixing (FWM) model has been proposed and investigated. The output powers in a FWM configuration are calculated as a function of the input signal power, with the result that new-wavelength is efficiently generated, leading to about −26 dB signal depletion. The signal loss spectra are also simulated under the condition of different initial signal powers, injected wavelengths, and fiber lengths.