Abstract
We demonstrate an externally modulated single channel 64 Gbit/s DP-QPSK transmission based on injection-locked Fabry-Perot broadband quantum-dash laser at far L-band similar to 1621 nm wavelength. A receiver sensitivity of -16.7 dBm has been observed after 10 km SMF transmission, with power penalty of similar to 2 dB, under the FEC threshold. We also propose that these novel quantum-dash laser diode could be a route towards next generation 100Gbit-PONs as a unified upstream and downstream transmitters.