450 Mbit/s optical frequency-division-multiplexing transmission with an 11 GHz channel spacing

A 450 Mbit/s 13 km optical frequency-division-multiplexing transmission with an 11 GHz channel spacing was demonstrated at 1.5 μm wavelength to confirm the feasibility of a laser-diode frequency-stabilising circuit and a narrow-channel-spaced optical demultiplexer.