2 Gbit/s optical transmission experiments at 1.3 μm with 44 km single-mode fibre

Abstract

GeAPD optical receiver sensitivity at 1.3 μm was studied up to 2 Gbit/s. High sensitivity of the receiver and a low coupling loss of 4 dB between a laser and a single-mode fibre achieved by a mocrolens made it possible to transmit 2 Gbit/s signals over a 44.3 km single-mode fibre. The optical receiving level was −29.4 dBm at a 10−9 error rate and no degradation occurred by fibre dispersion. The data rate by repeater spacing product of 88.6 (Gbit/s)·km was achieved at 1.3 μm.