Integratable device for amplitude modulation of a guided optical wave

摘要

The optical modulator 10 comprises a coupler with a grating 3 which permits a resonance excitation of a guided wave 9 from a plane incident electromagnetic wave 7. The guiding layer 2, superposed on the grating 3, is produced with the aid of an electrooptic material. The resonance excitation is controlled by a modulation voltage supplied by a generator 6 and applied to electrodes 4, 5 located on either side of the guiding layer 2. The amplitude modulator 10 may constitute an electrooptic modulator for guided waves as well as an electrooptic modulator for reflected waves. <IMAGE>