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Proceedings Paper

High performance distributed acoustic sensor using cyclic pulse coding in a direct detection coherent-OTDR
Author(s): Yonas Muanenda; Claudio J. Oton; Stefano Faralli; Fabrizio Di Pasquale
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Paper Abstract

We propose and experimentally demonstrate a Distributed Acoustic Sensor exploiting cyclic Simplex coding in a phase-sensitive OTDR on standard single mode fibers based on direct detection. Suitable design of the source and use of cyclic coding is shown to improve the SNR of the coherent back-scattered signal by up to 9 dB, reducing fading due to modulation instability and enabling accurate long-distance measurement of vibrations with minimal post-processing.

Paper Details

Date Published: 1 July 2015
PDF: 4 pages
Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 965547 (1 July 2015); doi: 10.1117/12.2203103
Show Author Affiliations
Yonas Muanenda, Scuola Superiore Sant'Anna (Italy)
Claudio J. Oton, Scuola Superiore Sant’Anna (Italy)
Stefano Faralli, Scuola Superiore Sant'Anna (Italy)
Fabrizio Di Pasquale, Scuola Superiore Sant'Anna (Italy)

Published in SPIE Proceedings Vol. 9655:
Fifth Asia-Pacific Optical Sensors Conference
Byoungho Lee; Sang-Bae Lee; Yunjiang Rao, Editor(s)

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