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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.:

US 12255440 B1

PDFFull Text
Date of Patent:
Mar. 18, 2025

Filed:

Dec. 23, 2021

Semiconductor laser with a mode expansion layer

Applicant:

Huawei Technologies Co., Ltd., Shenzhen, CN;

Inventors:

Ning Cheng, Plano, TX (US);

Xiang Liu, Plano, TX (US);

Frank Effenberger, Frisco, TX (US);

Assignee:

Huawei Technologies Co., Ltd., Shenzhen, CN;

Attorney:

Conley Rose, P.C.

Primary Examiner:

Yuanda Zhang

Int. Cl.
CPC ...
H01S 5/10 (2021.01); H01S 5/20 (2006.01); H01S 5/22 (2006.01); H01S 5/34 (2006.01); H01S 5/343 (2006.01); H01S 5/32 (2006.01);
U.S. Cl.
CPC ...
H01S 5/1014 (2013.01); H01S 5/2081 (2013.01); H01S 5/22 (2013.01); H01S 5/2205 (2013.01); H01S 5/3409 (2013.01); H01S 5/343 (2013.01); H01S 5/2086 (2013.01); H01S 5/3213 (2013.01); H01S 2301/18 (2013.01);
Abstract

A semiconductor laser comprises: a substrate; a first cladding layer disposed above the substrate; a second cladding layer disposed above the first cladding layer so that the first cladding layer is positioned between the substrate and the second cladding layer; and a first mode expansion layer within the first cladding layer, a second mode expansion layer within the second cladding layer, or both the first mode expansion layer within the first cladding layer and the second mode expansion layer within the second cladding.

Find Patent Forward Citations

Cheng, Ning. (2025). Semiconductor laser with a mode expansion layer (U.S. Patent No. 12255440). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12255440

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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