Optical modulator and control method therefor

Details Optical modulator and control method therefor Optical modulator and control method therefor

2006-04-10

2008-10-07

Healy, Brian M (Department: 2883)

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

C385S001000, C385S002000, C385S014000, C385S040000, C385S129000, C385S130000, C385S132000

Reexamination Certificate

active

07433550

ABSTRACT:
A Mach-Zehnder optical modulator capable of feed-back compensating a change due to an optical coupling loss, and the characteristic change peculiar to functional devices, and a control method therefore, are provided. A control method for a semiconductor Mach-Zehnder optical modulator using a laser device as a light source includes modulating light emitted from the laser device, and extracting the light as output light; detecting monitor light separate from the output light, among the optically modulated light; and feed-back controlling an optical output intensity of the laser device based on the monitor light.

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patent: 6111681 (2000-08-01), Mizrahi et al.
patent: 7200289 (2007-04-01), Yamada et al.
patent: 2007/0081756 (2007-04-01), Terashima et al.
patent: 06-043411 (1994-02-01), None
patent: 2003-233047 (2003-08-01), None

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