The Performance Analysis of Fiber Distributed Vibration Monitoring Technology Based on φ-OTDR

Abstract:

The performance of the fiber distributed vibration monitoring technology based on the phase sensitive optical time domain reflectometer (φ-OTDR) is reseached. the principle of fiber distributed vibration monitoring of the φ-OTDR and multi-point positioning are illustrated. And this paper indicates the feasibility of realizing multi-point positioning by the φ-OTDR system, and carry on a further research on the φ-OTDR system ́s frequency response range, measuring distance, spatial resolution and other aspects. The inverse proportion relations between the frequency range and distance of the φ-OTDR system, and the relations among spatial resolution, laser pulse width, refractive index and sampling rate are illustrated.

• Periodical: Applied Mechanics and Materials (Volumes 336-338)
• Pages: 192-195
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.336-338.192
• Online since: July 2013
• Authors: Ji Qiang Wang, Yuan Liu, Mo Yu Hou, Lin Zhao, Tong Yu Liu
• Keywords: Distributed Fiber Sensing, Frequency Response Range, Positioning Accuracy, Vibration Monitoring, φ-OTDR

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