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:
Dec. 01, 2020
Filed:
Nov. 29, 2016
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/026 (2006.01); H01S 5/22 (2006.01); H04B 10/50 (2013.01); G02F 1/015 (2006.01);
U.S. Cl.
CPC ...
H01S 5/0265 (2013.01); H01S 5/2228 (2013.01); H04B 10/5051 (2013.01); G02F 2001/0157 (2013.01);
Abstract
A semiconductor laser () emits laser light. An electro-absorption optical modulator () modulates the laser light. The electro-absorption optical modulator () includes a plurality of electro-absorption regions () having different extinction characteristics, whereby the extinction ratio curve of the optical device can be controlled to have a shape with multiple steps that is suited to driving conditions.