General IIR optical filter design for WDM applications using all-pass filters

  title={General IIR optical filter design for WDM applications using all-pass filters},
  author={C. K. Madsen},
  journal={Journal of Lightwave Technology},
  • C. K. Madsen
  • Published 2000 in Journal of Lightwave Technology
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… CONTINUE READING
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