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Optical Engineering

Simultaneous measurement of temperature and microdisplacement based on a Mach–Zehnder interferometer cascaded with a fiber Bragg grating
Author(s): Ye Cao; Huiying Liu; Zhengrong Tong; Shuo Yuan
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Paper Abstract

An all-fiber sensor for simultaneous measurement of temperature and microdisplacement is presented and demonstrated. The sensor head is fabricated by a peanut structure Mach–Zehnder interferometer (MZI) cascaded with a fiber Bragg grating (FBG). Experimental results show that the temperature sensitivities of the MZI (dip1) and the FBG (dipFBG) are 0.0909 and 0.0121  nm/°C, respectively. The microdisplacement sensitivities are −0.0233  and 0.0122  nm/μm, respectively. The simultaneous measurement of the temperature and microdisplacement is demonstrated based on the sensitive matrix. With the advantages of low cost and easy fabrication, this sensor has potential applications in security, construction, and energy.

Paper Details

Date Published: 10 June 2015
PDF: 5 pages
Opt. Eng. 54(6) 066101 doi: 10.1117/1.OE.54.6.066101
Published in: Optical Engineering Volume 54, Issue 6
Show Author Affiliations
Ye Cao, Tianjin Univ. of Technology (China)
Huiying Liu, Tianjin Univ. of Technology (China)
Zhengrong Tong, Tianjin Univ. of Technology (China)
Shuo Yuan, Tianjin Univ. of Technology (China)


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