Conversion of phase noise to intensity noise by Rayleigh scattering in optical fibers

Amnon Yariv, S. W. Wu, H. Blauvelt, N. Kwong

Research output: Contribution to conferencePaperpeer-review


Summary form only given, as follows. Any conceivable configuration which involves the propagation of a laser beam in a (single-mode) fiber results in a mixing between the main beam and the Rayleigh scattering from the thermodynamically frozen inhomogeneities. This mixing converts phase fluctuations in the output of the laser to intensity fluctuations. The laser Langevin-oscillator equation for the phase statistics of the laser field has been solved, and the result has been applied to a statistical noise analysis of the scattering problem in the fiber. The result is a set of expressions for the total scattered power under a variety of experimental configurations and for the spectrum of the intensity fluctuations. The spectrum of the intensity fluctuations in a delayed homodyne system with arbitrary delays has also been obtained. The theoretical predictions and their practical implications are compared with experiments employing fiber lengths of up to 20 km and semiconductor lasers with different linewidths.

Original languageEnglish (US)
Number of pages1
StatePublished - Dec 1 1990
Externally publishedYes
Event17th International Conference on Quantum Electronics - IQEC '90 - Anaheim, CA, USA
Duration: May 21 1990May 25 1990


Other17th International Conference on Quantum Electronics - IQEC '90
CityAnaheim, CA, USA

ASJC Scopus subject areas

  • Engineering(all)


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