Reduction of AM-induced penalty in DPSK receivers by sum-square demodulation

T. N. Nielsen, Ulrik Bo Gliese, Kristian Stubkjær

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Abstract

A DPSK (differential phase shift keying) demodulator which is insensitive to the amplitude modulation induced by semiconductor optical amplifier phase modulators is proposed. The demodulator consists of only two additional power dividers/combiners, compared to a traditional DPSK demodulator. Analysis shows that the receiver penalty caused by amplitude modulation can be reduced from 2-4 dB to zero. The demodulator is demonstrated in a 2.5-Gb/s DPSK system experiment using an optical amplifier as phase modulator
Original languageEnglish
JournalI E E E Photonics Technology Letters
Volume4
Issue number3
Pages (from-to)275-277
ISSN1041-1135
DOIs
Publication statusPublished - 1992

Bibliographical note

Copyright: 1992 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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