Equalization in coherent lightwave systems using a fractionally spaced equalizer

The performance of a fractionally spaced analog tapped delay line equalizer that has the advantages of being adaptive, being capable of equalizing other linear distortions such as polarization dispersion and nonideal receiver response, and eliminating chromatic dispersion over any distance if a suff...

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Veröffentlicht in:Journal of lightwave technology 1990-10, Vol.8 (10), p.1487-1491
1. Verfasser: Winters, J.H.
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description The performance of a fractionally spaced analog tapped delay line equalizer that has the advantages of being adaptive, being capable of equalizing other linear distortions such as polarization dispersion and nonideal receiver response, and eliminating chromatic dispersion over any distance if a sufficient number of taps are used is discussed. It is shown how this equalizer can be implemented at intermediate frequency and at baseband (for homodyne detection). Results show that an N-tap equalizer increases the maximum bit rate distance approximately (N-1)/twofold (e.g. a threefold increase in distance with a seven-tap equalizer).< >
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subjects Adaptive equalizers
Applied sciences
Bit rate
Chromatic dispersion
Delay effects
Delay lines
Exact sciences and technology
Microwave devices
Nonlinear distortion
Nonlinear filters
Optical fiber polarization
Optical waveguides
Radiocommunications
Telecommunications
Telecommunications and information theory
Transmitters. Receivers
title Equalization in coherent lightwave systems using a fractionally spaced equalizer
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