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Proceedings Paper

A new refractive index sensor based on Mach-Zehnder interferometer fabricated by two cascaded single-mode fiber corners
Author(s): Qingguo Shi; Baojin Peng; Daru Chen; Salai Fu; Huanhuan Dai
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Paper Abstract

We reported two kinds of fiber sensor based on double cascaded single mode fiber corners, which has a high sensitivity for refractive index (RI) sensing. RI sensing was experimentally demonstrated with average sensitivity of 95.5nm/RI unit (RIU) in a RI range from 1.333 to 1.421 and the other is 235nm/RI unit (RIU) from 1.333 to 1.418, which are relatively high among the previously reported similar fiber sensors (e.g., it is about 10 times higher than that of the normal two or three-cascaded-taper based Mach–Zehnder interferometer). Besides, The proposed RI sensors were fabricated only by a fiber fusion splicer. So , the fiber sensor is quite easy to made.

Paper Details

Date Published: 12 December 2014
PDF: 7 pages
Proc. SPIE 9274, Advanced Sensor Systems and Applications VI, 92741C (12 December 2014); doi: 10.1117/12.2071509
Show Author Affiliations
Qingguo Shi, Zhejiang Normal Univ. (China)
Baojin Peng, Zhejiang Normal Univ. (China)
Daru Chen, Zhejiang Normal Univ. (China)
Salai Fu, Zhejiang Normal Univ. (China)
Huanhuan Dai, Zhejiang Normal Univ. (China)

Published in SPIE Proceedings Vol. 9274:
Advanced Sensor Systems and Applications VI
Tiegen Liu; Shibin Jiang; Niels Neumann, Editor(s)

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