Fn. Timofeev et al., HIGH SPECTRAL PURITY MILLIMETER-WAVE MODULATED OPTICAL SIGNAL GENERATION USING FIBER GRATING LASERS, Electronics Letters, 34(7), 1998, pp. 668-669
Millimetre-wave optical signal generation by heterodyning two fibre gr
ating lasers is demonstrated. The resulting beat signal has an extreme
ly narrow linewidth (<50kHz), is continuously tunable (0-40GHz) and ex
hibits negligible chirp under direct 2.6Gbit/s modulation.