期刊
OPTICS COMMUNICATIONS
卷 346, 期 -, 页码 172-177出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2015.02.044
关键词
Fiber optics sensors; Rayleigh scattering; Interferometry; Optical time domain reflectometry
类别
资金
- International Science and Technology Cooperation Program of China [2012DFA10730]
- Natural Science Foundation of Shandong Province of China [ZR2010FM039]
We demonstrate the design and characterization of a distributed optical fiber sensing system based on Michelson interferometer of the phase sensitive optical time domain reflectometer (phi-OTDR) for acoustic measurement. Phase, amplitude, frequency response and location information can be directly obtained at the same time by using the passive 3 x 3 coupler demodulation. In order to simulate sound profiles of seismic or hydroacoustic imaging, experiments on detection of multiple piezoelectric transducers (PZT) are carried out. The result shows that our system can well demodulate different acoustic sources with different intensities. (C) 2015 Elsevier B.V. All rights reserved.
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