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Proceedings Paper

Tilted-fibre-Bragg-grating-based 800nm WDM interrogation system for strain, temperature, and refractive index sensing
Author(s): Rui Suo; Xianfeng Chen; Kaiming Zhou; Lin Zhang; Ian Bennion; Bo Liu
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Paper Abstract

We report the implementation of a low-cost high-resolution WDM interrogation system operating around 800nm region with bandwidth up to 60 nm and resolution of 13 pm by utilising a tilted fibre Bragg grating as an out-coupling device and a CCD-array detector. The system has been evaluated for interrogating fibre Bragg grating based strain, temperature sensors, giving sensitivities of 0.6 pm/&mgr;&Vegr; and 5.6 pm/°C which are in good agreement with previously reported values. Furthermore, the system has been utilised to detect refractive index change of sample liquids, demonstrating a capability of measuring index change as small as 10-5.

Paper Details

Date Published: 2 July 2007
PDF: 4 pages
Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66192N (2 July 2007); doi: 10.1117/12.738679
Show Author Affiliations
Rui Suo, Aston Univ. (United Kingdom)
Xianfeng Chen, Aston Univ. (United Kingdom)
Kaiming Zhou, Aston Univ. (United Kingdom)
Lin Zhang, Aston Univ. (United Kingdom)
Ian Bennion, Aston Univ. (United Kingdom)
Bo Liu, Nankai Univ. (China)


Published in SPIE Proceedings Vol. 6619:
Third European Workshop on Optical Fibre Sensors

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