All-fibre twist sensor system based on 45° and 8° tilted fibre gratings

Zhijun Yan, Adedotun Adebayo, Kaiming Zhou, Lin Zhang, David Webb

    Research output: Chapter in Book/Published conference outputConference publication

    Abstract

    We experimentally demonstrated a highly sensitive twist sensor system based on a 45° and an 81° tilted fibre grating (TFG). The 81°-TFG has a set of dual-peaks that are due to the birefringence induced by its extremely tilted structure. When the 81°-TFG subjected to twist, the coupling to the two peaks would interchange from each other, providing a mechanism to measure and monitor the twist. We have investigated the performance of the sensor system by three interrogation methods (spectral, power-measurement and voltage-measurement). The experimental results clearly show that the 81°-TFG and the 45°-TFG could be combined forming a full fibre twist sensor system capable of not just measuring the magnitude but also recognising the direction of the applied twist.
    Original languageEnglish
    Title of host publication21st International Conference on Optical Fiber Sensors
    EditorsWojtek J. Bock, Jacques Albert, Xiaoyi Bao
    Place of PublicationBellingham, WA (US)
    PublisherSPIE
    Number of pages4
    ISBN (Print)978-0-8194-8246-4
    DOIs
    Publication statusPublished - 17 May 2011
    Event21st International Conference on Optical Fiber Sensors - Ottawa, ON, Canada
    Duration: 15 May 201119 May 2011
    http://www.ofs21.org/

    Publication series

    NameSPIE Proceedings
    PublisherSPIE
    Volume7753
    ISSN (Print)0277-786X
    ISSN (Electronic)2410-9045

    Conference

    Conference21st International Conference on Optical Fiber Sensors
    Abbreviated titleOFS21
    Country/TerritoryCanada
    CityOttawa, ON
    Period15/05/1119/05/11
    Internet address

    Bibliographical note

    Zhijun Yan, Adedotun Adebayo, Kaiming Zhou, Lin Zhang and David Webb, "All-fibre twist sensor system based on 45° and 81° tilted fibre gratings", Proc. SPIE 7753, 77538E (2011). 21st International Conference on Optical Fiber Sensors (OFS21), 15-19 May 2011, Ottawa (CA).

    Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

    DOI: http://dx.doi.org/10.1117/12.884845

    Keywords

    • highly sensitive twist sensor system
    • 45°
    • 81°
    • tilted fibre grating
    • TFG
    • tilted structure
    • sensor system
    • full fibre twist sensor system
    • magnitude
    • direction

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