• Login
    View Item 
    •   YODA Home
    • CSEM Archive
    • Research Publications
    • View Item
    •   YODA Home
    • CSEM Archive
    • Research Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Digital OPLL-based distributed Brillouin sensing system in optical fibers

    Thumbnail
    View/Open
    Main article (2.446Mb)
    Author
    Chin, Sanghoon; Denis, Séverine; Kundermann, Stefan; Brasch, Victor; Lecomte, Steve
    Metadata
    Show full item record
    Abstract
    A digital optical phase-locked loop (OPLL) has been implemented to develop a distributed Brillouin sensing system in optical fibers. In our experiment, two commercial semiconductor lasers are phase-locked to each other with a highly flexible offset frequency using field programmable gate array (FPGA)-based electronics. Then, the difference frequency between the two lasers is highly stabilized and scanned by a desired step frequency in the vicinity of the Brillouin frequency of standard single-mode optical fibers. Consequently, the distribution of Brillouin frequency shift over a 50 km-long sensing fiber has been successfully measured by a very simple and low-cost Brillouin optical time-domain reflectometry (BOTDR) sensing system without any penalty in the sensing performance. The measurement repeatability at 50 km position of sensing fiber with a 5 m spatial resolution was measured be 4.5MHz under fast measurement conditions: the number of trace averaging of 2000 and the frequency scan step of 12.8 MHz, showing the figure-of-merit of 3.0.
    Publication Reference
    Optics Express, Vol. 30, Issue 11, pp. 18090-18097 (2022)
    Year
    2022-05-23
    Sponsors
    Centre Suisse d’Electronique et de Microtechnique S.A. CSEM
    URI
    https://yoda.csem.ch/handle/20.500.12839/1021
    Collections
    • Research Publications

    Browse

    All of YODACommunities & CollectionsBy Issue DateAuthorsTitlesResearch AreasBusiness UnitsThis CollectionBy Issue DateAuthorsTitlesResearch AreasBusiness Units

    My Account

    Login

    DSpace software copyright © 2002-2022  DuraSpace
    Contact Us | Send Feedback
    DSpace Express is a service operated by 
    Atmire NV