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Proceedings Paper

A model-based analysis of extinction ratio effects on phase-OTDR distributed acoustic sensing system performance
Author(s): Metin Aktas; Hakan Maral; Toygar Akgun
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Paper Abstract

Extinction ratio is an inherent limiting factor that has a direct effect on the detection performance of phase-OTDR based distributed acoustics sensing systems. In this work we present a model based analysis of Rayleigh scattering to simulate the effects of extinction ratio on the received signal under varying signal acquisition scenarios and system parameters. These signal acquisition scenarios are constructed to represent typically observed cases such as multiple vibration sources cluttered around the target vibration source to be detected, continuous wave light sources with center frequency drift, varying fiber optic cable lengths and varying ADC bit resolutions. Results show that an insufficient ER can result in high optical noise floor and effectively hide the effects of elaborate system improvement efforts.

Paper Details

Date Published: 23 February 2018
PDF: 20 pages
Proc. SPIE 10526, Physics and Simulation of Optoelectronic Devices XXVI, 105260Y (23 February 2018);
Show Author Affiliations
Metin Aktas, ASELSAN A.S. (Turkey)
Hakan Maral, ASELSAN A.S. (Turkey)
TOBB Univ. of Economics and Technology (Turkey)
Toygar Akgun, ASELSAN A.S. (Turkey)

Published in SPIE Proceedings Vol. 10526:
Physics and Simulation of Optoelectronic Devices XXVI
Bernd Witzigmann; Marek Osiński; Yasuhiko Arakawa, Editor(s)

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