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Proceedings Paper

Design of fiber optic IIR filters for processing lightwave signals
Author(s): Anjan K. Ghosh; Steve N. Frank
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Paper Abstract

Realization of direct forms infinite-impulse response digital filters using various radiatively-tappered fiber optic delay lines is discussed. Such filters are attractive because they can provide better magnitude characteristics in their frequency response for a smaller number of taps than finite-impulse response filters can. These realizations use spatial light modulators and thus can be incorporated into optical adaptive filters for processing lightwave signals. Models of error sources in the fiber optical realization and their effects on both time and frequency response characteristics are explained. Cascading of lower order subsystems to obtain higher order filters is discussed. A possible way of improving the insertion loss using Erbium doped fiber optic amplifiers is derived.

Paper Details

Date Published: 27 December 1990
PDF: 12 pages
Proc. SPIE 1347, Optical Information Processing Systems and Architectures II, (27 December 1990); doi: 10.1117/12.23439
Show Author Affiliations
Anjan K. Ghosh, Univ. of Iowa (United States)
Steve N. Frank, Univ. of Iowa (United States)

Published in SPIE Proceedings Vol. 1347:
Optical Information Processing Systems and Architectures II
Bahram Javidi, Editor(s)

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