Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/7644
Title: A distributed fiber vibration sensor utilizing dispersion induced walk-off effect in a unidirectional Mach-Zehnder interferometer
Authors: Chen, Q
Jin, C
Bao, Y
Li, Z
Li, J
Lu, C 
Yang, L
Li, G
Issue Date: 2014
Publisher: Optical Society of America
Source: Optics express, 2014, v. 22, no. 3, p. 2167-2173 How to cite?
Journal: Optics express 
Abstract: We propose and experimentally demonstrate a novel ultra-long range and sensitive distributed fiber vibration sensor. Only one unidirectional Mach-Zehnder interferometer (MZI) is employed in this scheme as the sensing element. In this sensor structure, we utilize chromatic dispersion-induced walk-off effect between the vibration signals sensed by two distributed feedback (DFB) lasers at different wavelengths to locate the vibration position. Vibration signals with frequencies up to 9MHz can be detected and the spatial resolution of 31m is achieved over 320km of the standard single mode fiber. Monitoring multiple vibration sources can also be realized using this scheme.
URI: http://hdl.handle.net/10397/7644
EISSN: 1094-4087
DOI: 10.1364/OE.22.002167
Appears in Collections:Journal/Magazine Article

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