Fibre laser torsion sensor system using an excessively tilted fibre grating and low-cost time domain demodulation

Chengbo Mou, Kaiming Zhou, Rui Suo, Lin Zhang, Ian Bennion

Research output: Chapter in Book/Report/Conference proceedingConference publication

Abstract

In this paper, we report a simple fibre laser torsion sensor system using an intracavity tilted fibre grating as a torsion encoded loss filter. When the grating is subjected to twist, it induces loss to the cavity, thus affecting the laser oscillation build-up time. By measuring the build-up time, both twist direction and angle on the grating can be monitored. Using a low-cost photodiode and a two-channel digital oscilloscope, we have characterised the torsion sensing capability of this fibre laser system and obtained a torsion sensitivity of ~412µs/(rad/m) in the dynamic range from -150° to +150°.
Original languageEnglish
Title of host publication20th international conference on optical fibre sensors
EditorsJulian D.C. Jones, Brian Culshaw, Wolfgang Ecke, José M. López-Higuera, Reinhardt Willsch
PublisherSPIE
Number of pages4
Volume7503
ISBN (Print)978-0-8194-7814-6
DOIs
Publication statusPublished - 5 Oct 2009
Event20th International Conference on Optical Fibre Sensors - Edinburgh, United Kingdom
Duration: 5 Oct 20099 Oct 2009

Publication series

NameSPIE proceedings
PublisherSPIE
Volume7503
ISSN (Print)0277-786X

Conference

Conference20th International Conference on Optical Fibre Sensors
CountryUnited Kingdom
CityEdinburgh
Period5/10/099/10/09
OtherThe International Conference on ‘Optical Fibre Sensors’ is acknowledged as the world’s leading conference on all topics related to fibre-optic, guided-wave and optical sensing devices, systems, theories and techniques for research and applications.

Bibliographical note

Chengbo Mou ; Kaiming Zhou ; Rui Suo ; Lin Zhang and Ian Bennion, "Fibre laser torsion sensor system using an excessively tilted fibre grating and low-cost time domain demodulation", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75033E (October 05, 2009); doi:10.1117/12.833595; http://dx.doi.org/10.1117/12.833595.

Copyright 2009 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.

http://dx.doi.org/10.1117/12.833595

Keywords

  • torsion sensor
  • fibre laser
  • tilted fibre grating
  • photonics

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  • Research Output

    • 4 Conference contribution

    Applications of polymer optical fibre grating sensors to condition monitoring of textiles

    Ye, C. C., Dulieu-Barton, J. M., Webb, D. J., Zhang, C., Peng, G-D., Chambers, A. R., Lennard, F. J. & Eastop, D. D., 5 Oct 2009, 20th International Conference on Optical Fibre Sensors. Jones, J. D. C. & et al (eds.). Bellingham, WA (US): SPIE, 4 p. 75030M. (SPIE Proceedings; vol. 7503).

    Research output: Chapter in Book/Report/Conference proceedingConference publication

    Open Access
    File
  • Fibre laser using a microchannel based loss tuning element for refractive index sensing

    Mou, C., Zhou, K., Davies, E., Zhang, L. & Bennion, I., 5 Oct 2009, 20th international conference on optical fibre sensors. Jones, J. D. C., Culshaw, B., Ecke, W., López-Higuera, J. M. & Willsch, R. (eds.). SPIE, Vol. 7503. (SPIE proceedings; vol. 7503).

    Research output: Chapter in Book/Report/Conference proceedingConference publication

    Open Access
    File
  • Optical load sensors utilizing fiber-Bragg-grating based Fabry-Perot resonators

    Shu, X., Sugden, K. & Bennion, I., 5 Oct 2009, 20th International Conference on Optical Fibre Sensors. Jones, J. D. C. & at al (eds.). Bellingham, WA (US): SPIE, 4 p. 750354. (SPIE Proceedings; vol. 7503).

    Research output: Chapter in Book/Report/Conference proceedingConference publication

    Open Access
    File
  • Cite this

    Mou, C., Zhou, K., Suo, R., Zhang, L., & Bennion, I. (2009). Fibre laser torsion sensor system using an excessively tilted fibre grating and low-cost time domain demodulation. In J. D. C. Jones, B. Culshaw, W. Ecke, J. M. López-Higuera, & R. Willsch (Eds.), 20th international conference on optical fibre sensors (Vol. 7503). (SPIE proceedings; Vol. 7503). SPIE. https://doi.org/10.1117/12.833595