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Proceedings Paper

Time/frequency coding for Brillouin distributed sensors
Author(s): Sébastien Le Floch; Florian Sauser; Marcelo A. Soto; Luc Thévenaz
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Paper Abstract

In this paper, we propose a novel coding for long range Brillouin Optical Time Analysis (BOTDA) distributed sensors based on a combination of time and frequency pulses, resulting in an additional coding gain of √2 with respect to traditional intensity-modulated codes. The generation of frequency-chirped pseudo-arbitrary pulses in return-to-zero (RZ) format with a Direct-Digital Synthesizer (DDS) is presented and the coding gain is experimentally verified, perfectly matching its theoretical value.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84211J (17 October 2012); doi: 10.1117/12.975001
Show Author Affiliations
Sébastien Le Floch, HE-ARC (Switzerland)
Florian Sauser, HE-ARC (Switzerland)
Marcelo A. Soto, Swiss Federal Institute of Technology (Switzerland)
Luc Thévenaz, Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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