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Reducing sensitivity fading in C-OTDR by use of enhanced scattering fiber segments
Author(s): René Eisermann; Philipp Rohwetter; Konstantin Hicke
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Paper Abstract

We present a technique to overcome the random transfer function of fiber-optic direct detection coherent optical time-domain reflectometry (C-OTDR). For this purpose, a standard optical fiber was treated by UV light in order to introduce local strongly scattering segments of definite size and distance to each other. Dynamic strain measurements were performed to demonstrate the sensory benefit in comparison to a non-manipulated fiber section. Our results show, that the modified fiber section exhibits a significant boost in strain sensitivity and in addition reduces the sensor dead time in a temperature-unstable environment as compared to a standard fiber.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103239N (23 April 2017); doi: 10.1117/12.2267659
Show Author Affiliations
René Eisermann, Bundesanstalt für Materialforschung und -prüfung (Germany)
Philipp Rohwetter, Bundesanstalt für Materialforschung und -prüfung (Germany)
Konstantin Hicke, Bundesanstalt für Materialforschung und -prüfung (Germany)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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