Optical networking and signal-processing applications of 790 nm self-pulsating laser diodes

A series of investigations into the networking and signal-processing applications of 790 nm self-pulsating lasers is described. The authors present two sets of experimental results. First, single-channel-per-laser subcarrier networking with respective aggregate throughputs of 450 Mbit/s and 1 Gbit/s over three binary phase shift keyed (BPSK) and five (quaternary phase shift keyed) QPSK channels is reported. Secondly, experimental observation of 1 GHz injection-locking together with 750 MHz and 1.5 GHz carrier extraction from BPSK and QPSK subcarrier signals centred on 375 MHz is described. Future applications for this work may be found in the areas of computer networking and optoelectronic signal-processing