Optical turbulence and spectral condensate in long fibre lasers

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Abstract

We study numerically optical turbulence using the particular example of a recently created, ultra-long fibre laser. For normal fibre dispersion, we observed an intermediate state with an extremely narrow spectrum (condensate), which experiences instability and a sharp transition to a fluctuating regime with a wider spectrum. We demonstrate that the number of modes has an impact on the condensate's lifetime. The smaller the number of modes, the more resistant is the condensate to perturbations. Experimental results show a good agreement with numerical simulations. © 2012 The Royal Society.

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Turitsyna, E. G., Falkovich, G., El-Taher, A., Shu, X., Harper, P., & Turitsyn, S. K. (2012). Optical turbulence and spectral condensate in long fibre lasers. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 468(2145), 2496–2508. https://doi.org/10.1098/rspa.2012.0037

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