The authors present a novel multifrequency wavelength-division-multiplexed (WDM) source based on a femtosecond fibre laser. The femtosecond pulses are linearly chirped and stretched in time by propagation through a fibre, so that 32 or more WDM channels can be defined and modulated sequentially in time by a single modulator.
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Nuss et al. (1996) studied this question.
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