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:
Mar. 01, 2016
Filed:
May. 19, 2014
Applicant:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Inventors:
Kazuhiro Yamaji, Yokohama, JP;
Katsumi Uesaka, Yokohama, JP;
Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/01 (2006.01); G02F 1/035 (2006.01); G02F 1/225 (2006.01); H04B 10/50 (2013.01); H04B 10/54 (2013.01);
U.S. Cl.
CPC ...
G02F 1/2255 (2013.01); G02F 1/0123 (2013.01); G02F 1/2257 (2013.01); G02F 2201/121 (2013.01); H04B 10/5053 (2013.01); H04B 10/5057 (2013.01); H04B 10/54 (2013.01);
Abstract
A Mach-Zehnder optical modulator includes a join-and-branch portion; two light wave guides connected with the join-and-branch portion; an output light waveguide connected with the join-and-branch portion; arm electrodes respectively provided on the two light waveguides; and a ground electrode that is provided at an edge of at least one of the arm electrodes along the light waveguide, is spaced from the arm electrode and is grounded.