Materials, Photonic Devices, and Sensors

Polarization-maintaining fiber sensor for simultaneous measurement of the temperature and refractive index

[+] Author Affiliations
Rui-an Zhao, Tingting Lang, Jun Chen, Jie Hu

China Jiliang University, Institute of Optoelectronic Technology, Hangzhou, Zhejiang, China

Opt. Eng. 56(5), 057113 (May 25, 2017). doi:10.1117/1.OE.56.5.057113
History: Received January 6, 2017; Accepted May 8, 2017
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Abstract.  A polarization-maintaining fiber (PMF) sensor for simultaneous measurement of the temperature and refractive index (RI) based on the Mach–Zehnder interferometer is proposed and demonstrated experimentally. This fiber sensor is constructed by sandwiching a 20-mm waist-enlarged PMF between two single-mode fibers (SMFs). Using the wavelength shifts of different interference dips and the sensitivity matrix, two external parameters can be measured simultaneously. Experiment results show that the sensitivities to the temperature are 145.6  pm/°C and 0.1256  nm/°C and the sensitivities to the RI are 35.0502 and 23.3694  nm/RIU for two interference dips, respectively. This fiber sensor is simple and easy to fabricate, has high sensitivity, and can be applied to other fields, such as biological and chemical sensings.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Rui-an Zhao ; Tingting Lang ; Jun Chen and Jie Hu
"Polarization-maintaining fiber sensor for simultaneous measurement of the temperature and refractive index", Opt. Eng. 56(5), 057113 (May 25, 2017). ; http://dx.doi.org/10.1117/1.OE.56.5.057113


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