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:
Jun. 18, 2024
Filed:
Dec. 05, 2019
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/343 (2006.01); G02F 1/025 (2006.01); G02F 1/21 (2006.01); H01S 5/50 (2006.01); H04B 10/556 (2013.01); H01S 5/10 (2021.01);
U.S. Cl.
CPC ...
H01S 5/343 (2013.01); G02F 1/025 (2013.01); G02F 1/212 (2021.01); H01S 5/50 (2013.01); H04B 10/556 (2013.01); G02F 2203/70 (2013.01); H01S 5/1007 (2013.01);
Abstract
An optical transmission apparatus includes a first multilevel optical phase modulator and a first semiconductor optical amplifier. The first semiconductor optical amplifier includes a first active region having a first multiple quantum well structure. Assuming that a first number of layers of a plurality of first well layers is defined as nand a first length of the first active region is defined as L(μm): (a) n=5 and 400≤L≤563; (b) n=6 and 336≤L≤470; (c) n=7 and 280≤L≤432; (d) n=8 and 252≤L≤397; (e) n=9 and 224≤L≤351; or (f) n=10 and 200≤L≤297.