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Interferometric Fiber Optic Sensors
Sensors 2012, 12(3), 3314-3326; doi:10.3390/s120303314
Article

Dynamic Strain Measured by Mach-Zehnder Interferometric Optical Fiber Sensors

*  and
Received: 11 January 2012; in revised form: 23 February 2012 / Accepted: 23 February 2012 / Published: 8 March 2012
(This article belongs to the Special Issue Optical Fiber Sensors)
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Abstract: Optical fibers possess many advantages such as small size, light weight and immunity to electro-magnetic interference that meet the sensing requirements to a large extent. In this investigation, a Mach-Zehnder interferometric optical fiber sensor is used to measure the dynamic strain of a vibrating cantilever beam. A 3 × 3 coupler is employed to demodulate the phase shift of the Mach-Zehnder interferometer. The dynamic strain of a cantilever beam subjected to base excitation is determined by the optical fiber sensor. The experimental results are validated with the strain gauge.
Keywords: optical fiber sensor; Mach-Zehnder interferometer; dynamic strain; 3 × 3 coupler optical fiber sensor; Mach-Zehnder interferometer; dynamic strain; 3 × 3 coupler
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Her, S.-C.; Yang, C.-M. Dynamic Strain Measured by Mach-Zehnder Interferometric Optical Fiber Sensors. Sensors 2012, 12, 3314-3326.

AMA Style

Her S-C, Yang C-M. Dynamic Strain Measured by Mach-Zehnder Interferometric Optical Fiber Sensors. Sensors. 2012; 12(3):3314-3326.

Chicago/Turabian Style

Her, Shiuh-Chuan; Yang, Chih-Min. 2012. "Dynamic Strain Measured by Mach-Zehnder Interferometric Optical Fiber Sensors." Sensors 12, no. 3: 3314-3326.


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