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Proceedings Paper

In-line fiber Mach-Zehnder interferometer combining with fiber Bragg grating for simultaneous curvature and temperature measurement
Author(s): Xinyong Dong; Yan Zhou; Wenjun Zhou; Wei Chang Wong; Chi Chiu Chan; Li-Yang Shao; Jia Cheng
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Paper Abstract

A sensor head consisting of a photonic crystal fiber (PCF)-based Mach-Zehnder interferometer (MZI) and a fiber Bragg grating (FBG) is proposed and experimentally demonstrated for simultaneous measurement of curvature and temperature. The MZI fabricated by splicing a short length of PCF between two single-mode fibers with the air-holes structure completely collapsed near the splicing points, is sensitive to fiber bending and surrounding temperature, while the FBG is only sensitive to the later. Simultaneous measurement of curvature and temperature is therefore obtained. Sensitivities of 4.06 nm/m-1 and 6.30 pm/°C are achieved experimentally for curvature and temperature, respectively. And the corresponding resolutions are 5.2x10-4 m-1 and 1.25 °C for curvature and temperature, respectively, based on the wavelength measurement resolution of 10 pm.

Paper Details

Date Published: 23 November 2011
PDF: 8 pages
Proc. SPIE 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 819903 (23 November 2011); doi: 10.1117/12.903447
Show Author Affiliations
Xinyong Dong, China Jiliang Univ. (China)
Yan Zhou, China Jiliang Univ. (China)
Zhejiang Province Institute of Metrology (China)
Wenjun Zhou, China Jiliang Univ. (China)
Nanyang Technological Univ. (Singapore)
Wei Chang Wong, Nanyang Technological Univ. (Singapore)
Chi Chiu Chan, Nanyang Technological Univ. (Singapore)
Li-Yang Shao, China Jiliang Univ. (China)
Jia Cheng, Zhejiang Province Institute of Metrology (China)


Published in SPIE Proceedings Vol. 8199:
2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications

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