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Suppression of stimulated Brillouin scattering in a fibre by changing the core radius

Suppression of stimulated Brillouin scattering in a fibre by changing the core radius

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Stimulated Brillouin scattering (SBS) in a fibre is suppressed by making the core radius nonuniform along its length to utilise the core-radius dependence of the longitudinal acoustic frequency. The effective Brillouin gain of an SBS suppression fibre prepared by the VAD method was reduced by 3.5 dB compared with conventional fibres.

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