Laser linewidth measurement using a Mach-Zehnder interferometer and an optical amplifier

J. A. Constable, I. H. White

Research output: Contribution to journalArticle


Laser Iinewidth measurements have been carried out using a novel form of unbalnced fibre Mach-Zehnder interferometer, in which the interference signal is frequency shifted by an optical amplifier, using a resonating electrical feedback loop. This method offers stable, high sensitivity measurement of the linewidths of coherent laser sources.

Original languageEnglish
Pages (from-to)140-142
Number of pages3
JournalElectronics Letters
Issue number2
Publication statusPublished - 1 Jan 1994


  • Light interferometers
  • Optical amplifiers
  • Optical variables measurement

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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