Wavelength division multiplexing passive optical networks (WDM PONs) with downstream DPSK and upstream remodulated OOK using injection-locked Fabry-Perot laser diodes (FP-LDs)

A wavelength division multiplexing-passive optical network (WDM-PON) system has been investigated, based on the injection locked Fabry-Perot laser diode (FP-LD). The system has been demonstrated without dispersion compensation for both 10Gbps differential phase-shift keying (DPSK) downstream signal and 2.5Gbps on-off keying (OOK) upstream signal respectively. Error free transmission over 50-km is achieved by tailoring the parameters of the FP-LD. The BER performance of our system shows that the injection locked FP-LD is a low cost effective colourless transmitter for high-speed WDM-PONs.