Optical modulator

Details Optical modulator Optical modulator

2005-09-27

2005-09-27

Thompson, Timothy (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S248000, C359S254000, C385S002000, C385S004000

Reexamination Certificate

active

06950218

ABSTRACT:
The present invention has an object to provide a Mach-Zehnder optical modulator with the excellent productivity and reliability, which can obtain a favorable optical response characteristic even if a high frequency electric signal is applied to a signal electrode. To this end, the present optical modulator is configured such that, in a Mach-Zehnder optical modulator in which an optical waveguide and a coplanar electrode are formed on a surface of a substrate having an electro-optic effect, floating electrodes formed using a conducting material, are provided on side faces along parallel waveguides, among side faces substantially perpendicular to the surface of the substrate. Thus, even when a high frequency electric signal is applied to the signal electrode, a phenomenon is suppressed in which a particular frequency resonates within the substrate, and an occurrence of dip in a particular frequency is avoided.

REFERENCES:
patent: 5-509415 (1993-12-01), None
patent: 7-64030 (1995-03-01), None
patent: 10-239648 (1998-09-01), None
patent: 2003-075790 (2003-03-01), None
patent: WO 91/17470 (1991-11-01), None

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