Multichannel sensing with fiber specklegrams

Shudong Wu, Shizhuo Yin, Sumati Rajan, Francis T.S. Yu

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

A fiber specklegram sensor for multichannel sensing is presented. Analyses and experiments show that a fiber specklegram sensor (FSS) is highly sensitive to the modal phasing variation of a multimode-sensing fiber. It is shown that the FSS is less vulnerable to environmental factors than the two-arm interferometric fiber-sensing technique. Because the FSS processes a narrow spectral bandwidth, it is particularly suitable for wavelength multiplexing. One of the major advantages of the FSS must be the multiplexing capability, in which multiparameter sensing can be realized in a single fiber. Applications of the FSS system to acoustic-sensing array, structural fatigue monitoring, and smart emission detection are also discussed.

Original languageEnglish (US)
Pages (from-to)5975-5983
Number of pages9
JournalApplied Optics
Volume31
Issue number28
DOIs
StatePublished - Jan 1 1992

All Science Journal Classification (ASJC) codes

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

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