Isolator-free 2.5 Gb/s, 45 km transmission characteristics in partially corrugated waveguide laser diodes from -40/spl deg/C to 80/spl deg/C under -14 dB external optical feedback

Using partially corrugated waveguide laser diodes (PC-LDs) with robust and high-yield external optical feedback resistance, isolator-free 2.5-Gbit/s,45-km transmission was demonstrated over a wide temperature range from -40/spl deg/C to +80/spl deg/C under -14 db external optical feedback.