Improved time response for polymer fibre Bragg grating based humidity sensors


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.

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Additional Information: W. Zhang, D. J. Webb and G.-D. Peng, "Improved time response for polymer fibre Bragg grating based humidity sensors", Proc. SPIE 7753, 77533M (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:
Event Title: 21st International Conference on Optical Fiber Sensors
Event Type: Other
Event Dates: 2011-05-15 - 2011-05-19
Uncontrolled Keywords: response time,humidity sensors,polymer optical fibre,POF,Bragg gratings,etching,acetone,poly (methyl methacrylate),diffusion time,wavelength change,humidity variations,Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Condensed Matter Physics
ISBN: 978-0-8194-8246-4
Last Modified: 02 Jan 2024 18:34
Date Deposited: 16 Jun 2011 10:27
Full Text Link: http://proceedi ... rticleid=753084
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2011-05-17
Authors: Zhang, W. (ORCID Profile 0000-0002-3584-8541)
Webb, D.J. (ORCID Profile 0000-0002-5495-1296)
Peng, G.-D.



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