Exact evaluation of laser linewidth requirements for optical PSK homodyne communication systems with balanced PLL receivers

Sianchang Huang, Likarn Wang

Research output: Contribution to journalReview article

19 Citations (Scopus)

Abstract

The power penalty induced by imperfect phase recovery in PSK homodyne communication systems with balanced phase-locked loop receivers are exactly evaluated. Optimum phase deviations between the mark-state and the space-state bits are used in this study. This study for the first time shows the imperfect-phase-recovery-induced power penalty as a function of laser linewidth with optimum phase deviations considered. It can be estimated from the theoretical result that an optimal balanced PLL receiver requires the laser linewidth as Δν ≤ 1.15 × 10-6 × (bit rate) in contrast to the previous reported one Δν ≤ 5.88 × 10-6 (bit rate). We also point out here that the previously reported laser linewidth requirement was wrongly estimated.

Original languageEnglish
Pages (from-to)661-664
Number of pages4
JournalJournal of Lightwave Technology
Volume14
Issue number5
DOIs
Publication statusPublished - 1996 May 1

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Fingerprint Dive into the research topics of 'Exact evaluation of laser linewidth requirements for optical PSK homodyne communication systems with balanced PLL receivers'. Together they form a unique fingerprint.

  • Cite this