Title :
General IIR optical filter design for WDM applications using all-pass filters
Author_Institution :
Bell Labs., Lucent Technol., Murray Hill, NJ, USA
fDate :
6/1/2000 12:00:00 AM
Abstract :
A general design algorithm is presented for infinite impulse response (IIR) bandpass and arbitrary magnitude response filters that use optical all-pass filters as building blocks. Examples are given for an IIR multichannel frequency selector, an amplifier gain equalizer, a linear square-magnitude response, and a multi-level response. Major advantages are the efficiency of the IIR filter compared to finite impulse response (FIR) filters, the simplicity of the optical architecture, and its tolerance for loss. A reduced set of unique operating states is discussed for implementing a reconfigurable multichannel selection filter.
Keywords :
IIR filters; all-pass filters; frequency response; optical communication equipment; optical feedback; optical waveguide filters; transient response; wavelength division multiplexing; WDM applications; all-pass filters; arbitrary magnitude response filters; design algorithm; finite impulse response; general IIR optical filter design; infinite impulse response; linear square-magnitude response; multi-level response; optical all-pass filters; optical architecture; reconfigurable multichannel selection filter; unique operating states; Algorithm design and analysis; Band pass filters; Finite impulse response filter; Frequency; IIR filters; Optical amplifiers; Optical design; Optical filters; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
