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We show theoretically that the waves generated by four-wave mixing can be eliminated by choosing appropriate channel spacing and amplifier spacing in frequency division multiplexed systems with the deployment of erbium-doped fibre amplifiers and dispersion-shifted fibres. This technique is effective, and no additional devices are needed.
The property of stimulated Brillouin scattering (SBS) initiated by thermally excited acoustic waves in absorption media is investigated in this paper. The distributed fluctuating source model is employed to describe the process of SBS built up from spontaneous Brillouin scattering. By using Fourier transform, we can obtain the power spectral density of the output Stokes wave, which is useful in predicting...
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