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Proceedings Paper

Microstructured fiber Mach-Zehnder interferometers for simultaneous measurement of axial strain and temperature
Author(s): Qiying Chen; Ping Lu
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Paper Abstract

Three different types of microstructured asymmetrical fiber Mach-Zehnder interferometers (aFMZIs) consisting of a fiber taper, a lateral-shifted junction, or a femtosecond laser irradiated spot are demonstrated to realize simultaneous measurement of axial strain and temperature. These aFMZIs of different device architectures exhibit different environmental sensitivities. For the taper/junction type aFMZI, the experimental results indicate temperature sensitivities of 60.6 and 64.0 pm/°C (redshifts) and strain sensitivities of -1.48 and -2.72 pm/με (blueshifts) at higher and lower interference orders m1 (49) and m2 (48), respectively. The other taper/spot and junction/spot type aFMZIs show similar performance and demonstrate the effectiveness of the approach.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77530U (17 May 2011); doi: 10.1117/12.886062
Show Author Affiliations
Qiying Chen, Memorial Univ. of Newfoundland (Canada)
Ping Lu, Memorial Univ. of Newfoundland (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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