Modelling the depletion length induced by modulation instability in distributed optical fibre sensors

Mehdi Alem; Marcelo A. Soto; Luc Thévenaz

doi:10.1117/12.2058862

2 June 2014 Modelling the depletion length induced by modulation instability in distributed optical fibre sensors

Mehdi Alem, Marcelo A. Soto, Luc Thévenaz

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91575S (2014) https://doi.org/10.1117/12.2058862
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

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.

Citation Download Citation

Mehdi Alem, Marcelo A. Soto, and Luc Thévenaz "Modelling the depletion length induced by modulation instability in distributed optical fibre sensors ", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91575S (2 June 2014); https://doi.org/10.1117/12.2058862

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