Optical waveguide element

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12197052
APP PUB NO 20220163825A1
SERIAL NO

17593931

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Abstract

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In order to provide an optical waveguide element that is capable of reducing coupling loss at a coupling portion with an optical fiber and of reducing propagation loss in an optical waveguide, the optical waveguide element comprises a supporting substrate and a waveguide layer consisting of a material having an electro-optic effect stacked on the supporting substrate, wherein a rib portion for forming an optical waveguide is provided protruding on an upper surface of the waveguide layer; a groove portion is formed on an upper surface of the supporting substrate directly below a part of the rib portion; and the groove portion is filled with a material having an effective refractive index comparable to that of the waveguide layer.

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO OSAKA CEMENT CO LTDTOKYO 102-8465

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kataoka, Yu Tokyo, JP 27 11
Miyazaki, Norikazu Tokyo, JP 106 218

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