Time-Delay Measurement Method Based on the Frequency-Spectrum Distribution of Laser Intensity or Phase Noise Signal

The frequency-domain measurement method of time delay based on laser intensity or phase noise as multifrequency signal source is proposed. The frequency-spectrum distribution of noise signal caused by the time delay is analyzed to extract the characteristic frequencies to derive the time delay. The...

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Veröffentlicht in:	IEEE sensors journal 2025-01, Vol.25 (1), p.618-624
Hauptverfasser:	Guan, Zhen, Shi, Jinhui, Zhu, Jun, Luo, Jiatong, Zuo, Cheng, Guang, Dong, Wang, Hui, Wu, Xuqiang, Lu, Liang, Wang, Rui, Li, Shili, Yu, Benli
Format:	Artikel
Sprache:	eng
Schlagworte:	Delays Deviation Fiber length measurement fiber optic sensor array fiber transfer time delay Frequency measurement Frequency spectrum Length measurement Measurement methods Noise intensity Noise measurement Optical fiber couplers Optical fiber sensors Optical fibers Phase measurement Phase noise Sensor arrays Sensors Time lag Time measurement Time-frequency analysis
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