The fabrication and operation of an Nd3+-doped silica single-mode fibre laser using a distributed fibre grating as the feedback element is reported. The laser had a threshold of less than 2mW, a slope efficiency of 19% and an output bandwidth at the lasing wavelength of 1.084μm of 16 GHz, significantly narrower than the conventional cavity design.
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Jauncey et al. (1986) studied this question.
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