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Proceedings Paper

Polarisation pulling in Brillouin optical time-domain analysers
Author(s): Marcelo A. Soto; Moshe Tur; Alexia Lopez-Gil; Miguel Gonzalez-Herraez; Luc Thévenaz
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Paper Abstract

The impact of Brillouin scattering on the polarisation of pump and probe in a Brillouin optical-time domain analyser is investigated. Experimental results indicate that the Brillouin interaction integrated along the entire sensing fibre produces a polarisation pulling force that changes the pump polarisation. Although this force can be compensated to first order by dual-sideband probes, the Brillouin gain/loss experienced by probe bands induce a net pulling that leads to uncompensated polarisation fading and reduced signal-to-noise ratio. While the use of two simultaneous orthogonally-polarised probes alleviates fading issues, spectral distortions originate from the coupling between Brillouin gain and polarisation pulling.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103239L (23 April 2017); doi: 10.1117/12.2267649
Show Author Affiliations
Marcelo A. Soto, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Moshe Tur, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Tel Aviv Univ. (Israel)
Alexia Lopez-Gil, Univ. de Alcalá (Spain)
Miguel Gonzalez-Herraez, Univ. de Alcalá (Spain)
Luc Thévenaz, Ecole Polytechnique Fédérale de Lausanne (Switzerland)

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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