An 11-GHz optical modulator using LiTaO3 as the electrooptic material has been designed and built. The experimental model has a bandwidth of about 100 mHz and is tunable over 1.5 GHz with uniform modulation characteristics. A phase modulation index of 0.45 rad was achieved with 1.6 W of modulating power.
R. D. Standley and G. D. Mandeville, "Performance of an 11-GHz Optical Modulator Using LiTaO3," Appl. Opt. 10, 1022-1023 (1971)