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Proceedings Paper

Measurement accuracy enhancement of distributed Brillouin sensors based on gain spectrum engineering
Author(s): Cheng Feng; Xin Lu; Stefan Preussler; Thomas Schneider
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Paper Abstract

We present for the first time, to the best of our knowledge, a novel method to improve the measurement accuracy of Brillouin optical time-domain analyzers (BOTDA) by engineering the gain spectrum of the Brillouin interaction. As will be shown, the engineered spectrum shape is more robust against noise and leads to a doubled frequency accuracy of the sensor. Since with the proposed method the frequency error is less susceptible to the intrinsic fiber loss, the sensing range can be extended by up to 60%. This work might open a new way to improve the BOTDA sensing performance with an engineered spectrum shape.

Paper Details

Date Published: 28 August 2019
PDF: 4 pages
Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111991S (28 August 2019); doi: 10.1117/12.2538900
Show Author Affiliations
Cheng Feng, Technische Univ. Braunschweig (Germany)
Xin Lu, NORCE Norwegian Research Ctr. (Norway)
Stefan Preussler, Technische Univ. Braunschweig (Germany)
Thomas Schneider, Technische Univ. Braunschweig (Germany)

Published in SPIE Proceedings Vol. 11199:
Seventh European Workshop on Optical Fibre Sensors
Kyriacos Kalli; Sinead O. O'Keeffe; Gilberto Brambilla, Editor(s)

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