Simultaneous wavelength conversion and high-speed wavelength switching has been demonstrated using a multisection grating-assisted coupler sampled reflector laser. A high-output extinction ratio (> 20 dBm) over a 30-nm wavelength range was observed. The 10-Gb/s data was switched between different output wavelengths at a 2.5-Gb/s rate and transmitted over 50 km of dispersion-shifted fiber with a small measured power penalty (< 2 dB).
Olga A. Lavrova, Lavanya Rau, and Daniel J. Blumenthal, "10-Gb/s Agile Wavelength Conversion With Nanosecond Tuning Times Using a Multisection Widely Tunable Laser," J. Lightwave Technol. 20, 712- (2002)