Based on the design of the tapped combline filter,combined with circuit simulation and 3-D EM simulation,the filter which can achieve a high rejection,low insertion loss and more transmission zeros is designed with the help of the method of DOE(Design of Experiment).

Finite impulse response comb filter based on fractional delay;

The analysis for comb filter based on crystal birefringence;

A design method for comb filter is proposed,it is demonstrated that the traditional time domain averaging is just a special case of the general comb filter and its performance is influenced by the error of estimating period only.

Optimization calculation of interleaver made of cascade Mach-Zehnder fiber interferometer;

Interleaver Design Based on Phase Characteristics of Fabry-Perot Cavity;

Fabry-Perot etalon must be thermally stable when it is used to make interleaver.

Theoretical analysis of photo-fiber comb-filter with light-insulating ability;

Comb-filter based on two fiber directional couplers;

Analysis of a Comb-Filter with Non-symmetrical Framework;

The calculating formula of microstrip pectinate bandpass filter is derived from the characteristic of the microstrip dual parallel coupling line.