2 July 2007 Tilted-fibre-Bragg-grating-based 800nm WDM interrogation system for strain, temperature, and refractive index sensing
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Proceedings Volume 6619, Third European Workshop on Optical Fibre Sensors; 66192N (2007) https://doi.org/10.1117/12.738679
Event: Third European Workshop on Optical Fibre Sensors, 2007, Napoli, Italy
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.
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Rui Suo, Xianfeng Chen, Kaiming Zhou, Lin Zhang, Ian Bennion, Bo Liu, "Tilted-fibre-Bragg-grating-based 800nm WDM interrogation system for strain, temperature, and refractive index sensing", Proc. SPIE 6619, Third European Workshop on Optical Fibre Sensors, 66192N (2 July 2007); doi: 10.1117/12.738679; https://doi.org/10.1117/12.738679
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