Influence of the laser frequency drift in phase-sensitive optical time-domain reflectometry

The influence of the laser frequency drift on the operation of phase-sensitive optical time-domain reflectometry (\(\Phi\)-OTDR) systems is considered. Theoretical results based on a new numerical \(\Phi\)-OTDR model demonstrating the influence of the laser frequency instability on a signal are repo...

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Veröffentlicht in:	arXiv.org 2020-05
Hauptverfasser:	Zhirnov, A A, Stepanov, K V, Chernutsky, A O, Fedorov, A K, Nesterov, E T, Svelto, C, Pnev, A B, Karasik, V E
Format:	Artikel
Sprache:	eng
Schlagworte:	Computer simulation Frequency drift Light sources Mathematical models Physics - Data Analysis, Statistics and Probability Physics - Instrumentation and Detectors Physics - Optics Qualitative analysis Reflectometry Sensors Simulation Time domain analysis Variation
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Zusammenfassung:	The influence of the laser frequency drift on the operation of phase-sensitive optical time-domain reflectometry (\(\Phi\)-OTDR) systems is considered. Theoretical results based on a new numerical \(\Phi\)-OTDR model demonstrating the influence of the laser frequency instability on a signal are reported. This model is verified based on experimental data. It has been used to calculate the signal-to-noise ratio (SNR) of the system for different parameters of the laser source stability. As a result, quantitative requirements for lasers used in \(\Phi\)-OTDR systems are formulated.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1604.08854