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 | Source: | Optics express, 2014, v. 22, no. 3, p. 2167-2173 | 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. | Publisher: | Optical Society of America | Journal: | Optics express | EISSN: | 1094-4087 | DOI: | 10.1364/OE.22.002167 |
| Appears in Collections: | Journal/Magazine Article |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Chen_Distributed_Fiber_Vibration.pdf | 1.95 MB | Adobe PDF | View/Open |
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