16 Gbit/s, 70 km pulse transmission by simultaneous dispersion and loss compensation with 1.5 μm optical amplifiers

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Abstract
A scheme for using semiconductor laser amplifiers for simultaneous compensation of both the fibre loss and the fibre dispersion in the 1.5 μm region is proposed and demonstrated. Experimentally, we demonstrate propagation of 16 Gbit/s pulses over 70 km of non-dispersion-shifted fibre at 1.53 μm wavelength. This distance is four times longer than the fundamental dispersion limit for transform-limited pulses.