Long-span optical transmission experiment over 222.8 km of commercial monomode fibre at 140 Mbit/s and 1.525 μm

Abstract
A 140 Mbit/s optical transmission experiment has been conducted over 222.8 km of commercially available monomode, step-index fibre using a 1.525 μm ridge-waveguide DFB laser and hybrid Ge APD receiver. An overall system margin of 1.2 dB was observed after full regeneration.

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