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:
Nov. 05, 2019
Filed:
Jan. 08, 2018
Applicant:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Inventor:
Akira Furuya, Yokohama, JP;
Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/225 (2006.01); H04B 10/54 (2013.01); G02F 1/21 (2006.01); H04B 10/516 (2013.01);
U.S. Cl.
CPC ...
G02F 1/225 (2013.01); H04B 10/541 (2013.01); G02F 2001/212 (2013.01); G02F 2201/12 (2013.01); H04B 10/5161 (2013.01);
Abstract
An optical transmission apparatus includes: a Mach-Zehnder modulator including a first arm waveguide having electrodes; and a driver driving the Mach-Zehnder modulator in response to a pulse amplitude modulated signal, the driver including driving circuits connected to the respective electrodes and each of the driving circuits including a comparator receiving the pulse amplitude modulated signal.