General analytical model for distributed Brillouin sensors with sub-meter spatial resolution

Luc Thevenaz; Jean-Charles Beugnot

doi:10.1117/12.835475

5 October 2009 General analytical model for distributed Brillouin sensors with sub-meter spatial resolution

Luc Thevenaz, Jean-Charles Beugnot

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75036A (2009) https://doi.org/10.1117/12.835475
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

A general analytic solution for Brillouin distributed fibre sensors with sub-meter spatial resolution has been obtained by solving the coupled wave equation by a perturbation method. The effect of the interaction of a square pump pulse with a continuous signal is described in full generality for all possible pumping schemes and for any detuning with the resonance condition of the Brillouin interaction. The model predicts how the acoustic wave, the signal amplitude and the gain spectral profile depend upon the pumping scheme. The analytical solution is an unprecedented tool to optimize the sensor configuration by determining the optimum pumping scheme.

Citation Download Citation

Luc Thevenaz and Jean-Charles Beugnot "General analytical model for distributed Brillouin sensors with sub-meter spatial resolution", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75036A (5 October 2009); https://doi.org/10.1117/12.835475

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