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    Overcoming the OTDR dead-zone using a few-mode fiber

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    Overcoming the OTDR Dead-Zone Using a Few-Mode Fiber.pdf
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    Type
    Conference Paper
    Authors
    Ashry, Islam cc
    Mao, Yuan
    Wang, Biwei
    Hveding, Frode
    Ng, Tien Khee cc
    Ooi, Boon S. cc
    KAUST Department
    Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
    Electrical and Computer Engineering Program
    Photonics Laboratory
    Date
    2021-03-05
    Permanent link to this record
    http://hdl.handle.net/10754/669300
    
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    Abstract
    Optical-time-domain-reflectometer (OTDR) suffers from the existence of dead-zones along a deployed fiber under test (FUT). Within a dead-zone, OTDR typically fails to provide any reliable diagnostic information. We here use a fewmode fiber (FMF) to completely cancel the OTDR dead-zone produced by the front facet reflection of the FUT. In particular, we launch the optical pulses in the form of the LP01 mode into the FMF, and meanwhile we record the Rayleigh signal from the higher-order modes. The developed system successfully monitors the amplitude and frequency of a vibration event produced by a piezoelectric transducer (PZT) located within the dead-zone.
    Citation
    Ashry, I., Mao, Y., Wang, B., Hveding, F., Ng, T. K., & Ooi, B. S. (2021). Overcoming the OTDR dead-zone using a few-mode fiber. Photonic Instrumentation Engineering VIII. doi:10.1117/12.2577031
    Publisher
    SPIE
    Conference/Event name
    Photonic Instrumentation Engineering VIII 2021
    ISBN
    9781510642218
    DOI
    10.1117/12.2577031
    Additional Links
    https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11693/2577031/Overcoming-the-OTDR-dead-zone-using-a-few-mode-fiber/10.1117/12.2577031.full
    ae974a485f413a2113503eed53cd6c53
    10.1117/12.2577031
    Scopus Count
    Collections
    Conference Papers; Electrical and Computer Engineering Program; Photonics Laboratory; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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