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Proceedings Paper

Modelling the depletion length induced by modulation instability in distributed optical fibre sensors
Author(s): Mehdi Alem; Marcelo A. Soto; Luc Thévenaz
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Paper Abstract

An analytical model for the depletion length of modulation instability in single-mode optical fibres is proposed. The model gives the possibility to determine the maximum sensing distance that distributed optical fibre sensors can reach before being limited by the pump depletion induced by modulation instability. The important role of the noise level in the evolution of both modulation instability and the respective power depletion is clarified. The model gives a closedform expression helpful for a predictive design and is validated comparing the analytical results obtained by the model with measurements in a 25 km long Brillouin fibre sensor.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91575S (2 June 2014); doi: 10.1117/12.2058862
Show Author Affiliations
Mehdi Alem, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Marcelo A. Soto, Ecole Polytechnique Fédérale de Lausanne (Switzerland)
Luc Thévenaz, Ecole Polytechnique Fédérale de Lausanne (Switzerland)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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