The effect of nonideal optical hybrids on the performance of { 2×2 } and { 3×3 } CPFSK phase diversity homodyne receivers

Ichiro Seto, Iwao Sasase, Shinsaku Mori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The key component of CPFSK phase diversity liomodyne receivers is an optical hybrid. It provides a means of recovering the modulated optical signal without phase locking. However, all multiport receivers are sensitive to an optical hybrid imbalance. In this paper, an analysis of the effects of nonideal optical hybrids on the performance of {2 × 2} and {3×3} continuous phase frequency-shift keying (CPFSK) phase diversity homodyne receivers is done for the shot noise limited case. Asymptotic methods are employed, to give estimates of the bit-error-rate (BER) dependence for each type of the receiver. The results show that, for zero laser linewidths, the effect of a nonideal optical hybrid on the {3 × 3} CPFSK phase diversity receiver sensitivity is much less than that on the the {2 × 2} one and that, for {2 × 2} phase diversity receivers, CPFSK modulation is a little more sensitive to a nonideal optical hybrid than differential phase-shift keying (DPSK).

Original languageEnglish
Title of host publicationProceedings - Singapore ICCS/ISITA 1992
Subtitle of host publication''Communications on the Move''
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1048-1052
Number of pages5
ISBN (Electronic)0780308034, 9780780308039
DOIs
Publication statusPublished - 1992 Jan 1
Event1992 Singapore: Communications on the Move, ICCS/ISITA 1992 - Singapore, Singapore
Duration: 1992 Nov 161992 Nov 20

Publication series

NameProceedings - Singapore ICCS/ISITA 1992: ''Communications on the Move''

Conference

Conference1992 Singapore: Communications on the Move, ICCS/ISITA 1992
CountrySingapore
CitySingapore
Period92/11/1692/11/20

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing

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