The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 2018
Filed:
Mar. 20, 2017
Applicants:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Photonics Electronics Technology Research Association, Bunkyo-ku, Tokyo, JP;
Inventors:
Assignees:
FUJITSU LIMITED, Kawasaki, JP;
PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/01 (2006.01); G02F 1/025 (2006.01); G02F 1/225 (2006.01); G02F 1/21 (2006.01); G02F 1/015 (2006.01);
U.S. Cl.
CPC ...
G02F 1/0121 (2013.01); G02F 1/025 (2013.01); G02F 1/2257 (2013.01); G02F 2001/0152 (2013.01); G02F 2001/212 (2013.01);
Abstract
An optical modulation device includes: an optical waveguide formed above a substrate; a phase modulator disposed on part of the optical waveguide; a capacitor connected to the phase modulator and including a lower electrode and an upper electrode; a resistor connected in parallel to the capacitor; and an appended part integrated with the upper electrode and electrically connected to the resistor, wherein the appended part is smaller in area than the capacitor (upper electrode).