Analysis of the effect of thermal chirp on interferometric homodyne and heterodyne crosstalk in optical communication systems employing directly modulated DFB lasers

Efraim Rotem, Dan Sadot

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A closed-form expression is derived for the probability density function (pdf) of the beat noise created by homodyne and heterodyne interferometric crosstalk in optical communication systems employing directly modulated distributed feedback lasers at bit rates between 155 Mb/s and 2.5 Gb/s. Thermal chirp is shown to be the predominant chirp mechanism affecting homodyne-crosstalk-induced penalty at bit rates up to 2.5 Gb/s. Theoretical calculations of the crosstalk-induced power penalty are verified experimentally.

Original languageEnglish
Pages (from-to)2662-2672
Number of pages11
JournalJournal of Lightwave Technology
Volume23
Issue number9
DOIs
StatePublished - 1 Sep 2005

Keywords

  • Distributed feedback lasers
  • Error analysis
  • Laser chirp
  • Optical communication
  • Optical crosstalk
  • Optical fiber interference
  • Optical modulation
  • Optical noise
  • Power penalties
  • Semiconductor lasers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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