Mode instability and linewidth rebroadening in DFB lasers

H. Olesen, B. Tromborg, H. E. Lassen, X. Pan

Research output: Contribution to journalJournal articleResearchpeer-review

23 Citations (Scopus)

Abstract

Results of a detailed linewidth theory for DFB lasers are presented. We show that fluctuations in the longitudinal distributions of photon and carrier densities can have a significant effect on the linewidth. A new type of linewidth rebroadening is identified, which is attributed to modal instability. This may explain the rebroadening observed in cases with high sidemode suppression.

Original languageEnglish
JournalElectronics Letters
Volume28
Issue number5
Pages (from-to)444-446
Number of pages3
ISSN0013-5194
DOIs
Publication statusPublished - Feb 1992
Externally publishedYes

Keywords

  • Lasers
  • Stability

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