Pico-strain multiplexed fiber optic sensor array operating down to infra-sonic frequencies

Ian C.M. Littler, Malcolm B. Gray, Jong H. Chow, Daniel A. Shaddock, David E. McClelland

    Research output: Contribution to journalArticlepeer-review

    37 Citations (Scopus)

    Abstract

    An integrated sensor system is presented which displays passive long range operation to 100 km at pico-strain (pε) sensitivity to low frequencies (4 Hz) in wavelength division multiplexed operation with negligible cross-talk (better than -75 dB). This has been achieved by pre-stabilizing and multiplexing all interrogation lasers for the sensor array to a single optical frequency reference. This single frequency reference allows each laser to be locked to an arbitrary wavelength and independently tuned, while maintaining suppression of laser frequency noise. With appropriate packaging, such a multiplexed strain sensing system can form the core of a low frequency accelerometer or hydrophone array.

    Original languageEnglish
    Pages (from-to)11077-11087
    Number of pages11
    JournalOptics Express
    Volume17
    Issue number13
    DOIs
    Publication statusPublished - 22 Jun 2009

    Fingerprint

    Dive into the research topics of 'Pico-strain multiplexed fiber optic sensor array operating down to infra-sonic frequencies'. Together they form a unique fingerprint.

    Cite this