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Simultaneous measurement of axial strain and temperature using a PM fiber Bragg grating

✍ Scribed by Zhongrong Tong; Jinting Zhao; Xiufeng Yang

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
376 KB
Volume
53
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A novel design for simultaneous axial strain and temperature measurement using a PM fiber Bragg grating (PMFBG) concatenated with a Sagnac fiber loop mirror is proposed and demonstrated.The PMFBG acts as a sensor head, and the Sagnac fiber loop mirror serves as a filter to convert wavelength variation to optical power change. By measuring the wavelength difference and power difference of two resonant peak of the PMFBG, simultaneous measurement of axial strain and temperature can be realized. Maximum errors of ±6.821 με and ±0.001°C are reported over 480 με and 60°C measurement ranges, respectively. This scheme has the advantage of low cost, compact configuration, and conveniently using. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:867–870, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25854

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