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Millimetre-wave optical signal generation by heterodyning two semiconductor fibre grating lasers is demonstrated for the first time. The resulting beat signal, has an extremely narrow linewidth (<100 kHz), is continuously tuneable (0-40 GHz) and exhibits negligible chirp under direct 2.6 Gbit/s modulation.
Microwave Symposium Digest, 1998 IEEE MTT-S International (Volume:3 )
Date of Conference: 7-12 June 1998