Lasers, Fiber Optics, and Communications

Simultaneous measurement of temperature and microdisplacement based on a Mach–Zehnder interferometer cascaded with a fiber Bragg grating

[+] Author Affiliations
Ye Cao, Huiying Liu, Zhengrong Tong, Shuo Yuan

Tianjin University of Technology, School of Computer and Communication Engineering, Tianjin Key Laboratory of Film Electronic and Communication Devices, Tianjin 300384, China

Opt. Eng. 54(6), 066101 (Jun 10, 2015). doi:10.1117/1.OE.54.6.066101
History: Received January 23, 2015; Accepted April 20, 2015
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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 0.0121nm/°C, respectively. The microdisplacement sensitivities are 0.0233 and 0.0122nm/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.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Ye Cao ; Huiying Liu ; Zhengrong Tong and Shuo Yuan
"Simultaneous measurement of temperature and microdisplacement based on a Mach–Zehnder interferometer cascaded with a fiber Bragg grating", Opt. Eng. 54(6), 066101 (Jun 10, 2015). ; http://dx.doi.org/10.1117/1.OE.54.6.066101


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