Optical waveguide modulator communications device and method of

Details Optical waveguide modulator communications device and method of Optical waveguide modulator communications device and method of

1991-07-09

1992-07-14

Healy, Brian

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

385 9, 385 10, 385 28, 385 37, 385 40, 359130, 359154, 359164, 359173, 359245, 359320, 359576, 357 16, 357 30, G02B 610, G02F 100, H01L 2714

Patent

active

051310600

ABSTRACT:
An optical modulator includes a substrate, a first waveguide layer formed on the substrate, a second waveguide layer stacked together with the first waveguide layer in a direction of a thickness thereof on the substrate, the second waveguide layer having a waveguide mode different from that of the first waveguide layer, a diffraction grating formed in a region where the waveguide modes of the first and second waveguide layers overlap each other, and an electrode. When the electrical signal is applied through the electrode, the wavelength of the light coupled by the diffraction grating is changed, and light output from the second waveguide layer is modulated in accordance with the electrical signal. A method of modulating light using the above optical modulator is also disclosed.

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