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Singlemode UV-induced distributed feedback (DFB) fibre lasers with a linewidth of < 15 kHz and a sidemode suppression better than 61 dB are presented. The stability of the lasers is verified by a 10 Gbit/s transmission experiment. Five DFB fibre lasers are cascaded and pumped by a single semiconductor laser, thereby forming a multiwavelength source for WDM systems.
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Hübner et al. (1997) studied this question.
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