General expression of poly(methyl methacrylate) optical fiber Bragg grating sensing response


Poly(methyl methacrylate) (PMMA) optical fiber inherently responds to the changes of temperature and relative humidity. PMMA optical fiber Bragg grating (POFBG) has been reported with diverse temperature and relative humidity sensitivities. These results cannot present the full performance of POFBG sensor as they are measured at limited environmental conditions. In this work we systematically investigated the POFBG temperature and relative humidity sensing responses. We found that POFBG temperature/relative humidity sensitivity is the function of both temperature and relative humidity. In the experiments POFBG sensing responses vary linearly with temperature/relative humidity at fixed relative humidity/temperature. Based on this linearity a general expression of POFBG sensing response to temperature and relative humidity has been obtained and verified for the first time, to describe the POFBG performance in desired operation range. The anisotropy in POF induced by drawing history could induce uncertainty in POFBG response but pre-straining POFBG overcomes this problem.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
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Publication ISSN: 1941-0174
Last Modified: 27 Jun 2024 09:46
Date Deposited: 07 Jan 2019 11:58
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Related URLs: https://ieeexpl ... cument/8588999/ (Publisher URL)
PURE Output Type: Article
Published Date: 2019-02-01
Published Online Date: 2018-12-25
Accepted Date: 2018-12-01
Authors: Zhang, W. (ORCID Profile 0000-0002-3584-8541)
Webb, D. J. (ORCID Profile 0000-0002-5495-1296)



Version: Accepted Version

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