Optical control device

Details Optical control device Optical control device

2011-04-12

2011-04-12

Peng, Charlie (Department: 2883)

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

C385S001000, C385S008000, C385S130000

Reexamination Certificate

active

07925123

ABSTRACT:
A light control element is provided with a thin board having electro-optical effects; an optical waveguide formed on the thin board; and a control electrode for controlling light that passes through the optical waveguide. The light control element performs speed matching between a microwave signal applied to the control electrode and the light, impedance matching of the microwaves, reduction of a driving voltage and high speed operation. In the control electrode of the light control element, a signal electrode and a grounding electrode are arranged on an upper side of the thin board, and on a lower side of the thin board, a second electrode including the grounding electrode is arranged, through a low refractive index layer entirely formed in the length direction of the signal electrode, with a width wider than that of the signal electrode.

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