Demonstration of 9×200 Mbit/s wavelength division multiplexedtransmitter

A multifrequency laser capable of generating 200 Mbit/s data rates simultaneously at nine different wavelengths is demonstrated. The laser is based on the monolithic integration of a waveguide grating router with semiconductor optical amplifiers and thus provides automatic alignment of the optical channel wavelengths. This multifrequency laser may have important applications for local access WDM networks