In a forward multi-longitudinal mode laser diode(LD)-pumped Raman fiber amplifier,the comb-like waves with more than 100 wavelengths are found on both sides of the amplified signal wavelength.

The frequency band gaps of one-dimensional comb-like waveguide photonic crystals were investigated.

To the problem of interference and base-line excursion, this paper proposes an adaptive comb filter with Phase-Locked Loop(PLL), besides digital comb filters.

Based on principals of interference of acoustic waves and simplified digital delay-line,comb filter effect induced by superposition of reflections from steps is presented.

The transfer matrix method is used to study optical comb filter properties of one-dimensional multilayer photonic crystal.

Based on the study of wavelet de noising and the method of time average, it is demonstrated that the most suitable base should be comb wavelet for eliminating high level noise in vibration signals.

The comb filtering effect which was caused by improper use of microphone during record and on-site sound amplifying was analyzed combined with acoustic theories of modern musi

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.