Modeling of waveform distortion due to optical filtering

The usable bandwidth of an optical filter is not only limited by signal att enuation, but also the waveform distortion when optical signal is passed th rough the edge of the filter. The waveform distortion due to optical filter ing is investigated,vith the assumption of linearly chirped Gaussian pulse. While the first-order optical filtering (linear slope in dB) does not indu ce waveform distortion, second-order optical filtering induces pulse distor tion similar to fiber dispersion.