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. 25, 2025
Filed:
Dec. 12, 2023
Bandwidth10, Ltd., Berkeley, CA (US);
Dalila Ellafi, Berkeley, CA (US);
Neelanjan Bandyopadhyay, Berkeley, CA (US);
Christopher Chase, Berkeley, CA (US);
Michael Y. Huang, Berkeley, CA (US);
Carlos F. R. Mateus, Berkeley, CA (US);
Chuanshun Cao, Berkeley, CA (US);
Carl V. Ford, Berkeley, CA (US);
Kai Hui, Berkeley, CA (US);
Philip Worland, Berkeley, CA (US);
Bandwidth10, LTD., Berkeley, CA (US);
Abstract
A VCSEL system includes a tunable VCSEL laser with one or more active regions having quantum wells and barriers. The one or more active regions surrounded by one or more p-n junctions. The one or more active regions can include one or more tunnel junctions (TJ), and one or more apertures One or more buried tunnel junctions (BTJ) or oxide confine apertured, additional TJ's. Planar structures and or additional BTJ's, created during a regrowth process, are independent of a first growth process. The VCSEL has an HCG grading. The VCSEL includes a sacrificial layer.