Wide tunability over the entire C-band of the generation of 40 GHz high-quality 500 fs pulse train is shown by compressing an externally-modulated pulse train using 1.4 km comb-like profiled fibre. The use of the comb-like profiled fibre is essential for the features of short fibre and wide operating wavelength range.
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Igarashi et al. (2005) studied this question.
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