Optical fiber distributed vibration sensor based on dual Mach-Zehnder interferometer using an improved phase generated carrier algorithm
Infrared Physics & Technology(2022)
摘要
•An improved phase generated carrier demodulation algorithm is proposed.•The dynamic vibrations are accurately demodulated.•The influence of the high-order harmonics and the intensity fluctuation is greatly suppressed.•A mean positioning error of 13.1 m is achieved.
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关键词
Optical fiber,Distributed vibration sensing,Dual Mach-Zehnder interferometer,Phase generated carrier,Linear demodulation,High accuracy,Signal processing
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