Improved time response for polymer fibre Bragg grating based humidity sensors

W. Zhang; D. J. Webb; G.-D. Peng

doi:10.1117/12.885936

17 May 2011 Improved time response for polymer fibre Bragg grating based humidity sensors

W. Zhang, D. J. Webb, G.-D. Peng

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77533M (2011) https://doi.org/10.1117/12.885936
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

In this work we experimentally investigate the response time of humidity sensors based on polymer optical fibre (POF) Bragg gratings. By the use of etching with acetone we can control the diameter of POF based on poly (methyl methacrylate) in order to reduce the diffusion time of water into the polymer and hence speed up the relative wavelength change caused by humidity variations. A much improved response time of 11 minutes has been achieved by using a POF FBG with a reduced diameter of 135 microns.

Citation Download Citation

W. Zhang, D. J. Webb, and G.-D. Peng "Improved time response for polymer fibre Bragg grating based humidity sensors", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77533M (17 May 2011); https://doi.org/10.1117/12.885936

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