Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic
Reexamination Certificate
2008-12-17
2010-10-05
Peace, Rhonda S (Department: 2874)
Optical waveguides
Temporal optical modulation within an optical waveguide
Electro-optic
C385S001000
Reexamination Certificate
active
07809218
ABSTRACT:
An object of the present invention is, in an optical modulator, to increase the production yield by enhancing the patterning accuracy of the electrodes, as well as to reduce the electrode loss by increasing the thickness of the electrodes. An optical modulator has a substrate5made of an electro-optical material; a modulation electrode2A,3A,2B provided on the substrate5; and an optical waveguide1cprovided on the substrate5. Light propagating through the optical waveguide1cis modulated by applying a modulation voltage to the modulation electrode. At least a part of the modulation electrode includes a base2a,3aformed on the substrate5and a projection part2b,3bhaving a width narrower than that of the base.
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Summons to Attend Oral Proceedings Pursuant to Rule 115(1) EPC from EP Patent App. No. 08171962.7 (Aug. 6, 2010).
Aoki Kenji
Iwata Yuichi
Kondo Jungo
Mitomi Osamu
Cermak Nakajima LLP
Nakajima Tomoko
NGK Insulators Ltd.
Peace Rhonda S
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