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Proceedings Paper

Refractive index and temperature sensor based on double-pass in-line Mach-Zehnder interferometer
Author(s): Yi Li; Liang Chen; Edouard Harris; Xiaoyi Bao; Wojtek J Bock
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Paper Abstract

Different from the conventional optical fiber in-line Mach-Zehnder interferometer (MZI), we proposed and demonstrated a novel double-pass in-line fiber taper MZI as a refractive index and temperature sensor in this study. The double-pass MZI is composed of a reflecting mirror, a circulator and an in-line fiber MZI. The attenuation peaks of the double-pass MZI spectra have higher contrasts than the peaks of single-pass spectra. Using our recently proposed spectrum differential integration (SDI) analyzing method, the double-pass MZI sensors' sensitivities can be made nearly twice as large as those of the single-pass ones.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77530Q (17 May 2011); doi: 10.1117/12.884932
Show Author Affiliations
Yi Li, China Jiliang Univ. (China)
Univ. of Ottawa (Canada)
Liang Chen, Univ. of Ottawa (Canada)
Edouard Harris, Univ. of Ottawa (Canada)
Xiaoyi Bao, Univ. of Ottawa (Canada)
Wojtek J Bock, Univ. du Québec en Outaouais (Canada)


Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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