Analysis of the tunable optical comb filter by using Mach-Zehnder interferometer
In this paper, we proposed an all fiber comb filters using a variable ratio coupler (VRC) based Mach-Zehnder interferometer (MZI). First the transmission characteristics of the proposed comb filter are theoretically analyzed. Then calculated the transmission spectra of channel spacing tunable and multi-wavelength switchable operation with sinusoid response.