Integrated optical modulator and method for manufacturing...

Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic

Reexamination Certificate

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Details

C385S001000, C385S002000, C385S008000, C359S245000, C359S276000, C359S278000, C359S279000

Reexamination Certificate

active

07440642

ABSTRACT:
An integrated optical modulator and method for manufacturing thereof are disclosed. The integrated optical modulator comprises a carrier wave band modulator using a double sideband modulation method and an intermediate frequency band modulator using a single sideband modulation method. The carrier wave band modulator and the intermediate frequency band modulator are connected in series. A method for manufacturing an integrated optical modulator comprises preparing a substrate having at least one polarization reversed section, forming a first optical waveguide part and a second optical waveguide part on the substrate, forming a buffer layer over the first and second optical waveguide parts, forming sequentially a first electrode part and a second electrode part over the first optical waveguide part, and forming a third electrode part over the second optical waveguide part.

REFERENCES:
patent: 1666206 (1928-04-01), Hartley
patent: 5278924 (1994-01-01), Schaffner
patent: 5526158 (1996-06-01), Lembo
patent: 6501867 (2002-12-01), Gates, II et al.
patent: 2002/0149826 (2002-10-01), Tanaka et al.

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