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. 16, 2026
Filed:
Jun. 16, 2023
Lumentum Japan, Inc., Sagamihara, JP;
Tetsuyoshi Takamure, Sagamihara, JP;
Ryu Washino, Yokohama, JP;
Yoshihiro Kojima, Sagamihara, JP;
Saori Hizume, Sagamihara, JP;
Lumentum Radiant GmbH, Baar, CH;
Abstract
A semiconductor optical device includes: a mesa-stripe structure extending in a first direction; a pair of buried layers, each buried layer including a first slope surface adjacent to a top surface of the mesa-stripe structure, each buried layer including a first upright surface that stands straight from an upper end of the first slope surface, each buried layer including an upper surface higher than the top surface; an insulating film on the upper surface; and an electrode film over the top surface, the first slope surface, and the insulating film. The first upright surface has an upper end. The upper surface of at least one of the pair of buried layers has recesses. Each recess has a second slope surface that slopes downward from the upper surface. The second slope surface has an upper end that extends along a second direction perpendicular to the first direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile