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:
May. 28, 2019
Ciena Corporation, Hanover, MD (US);
Kelvin Prosyk, Luskville, CA;
Ian Woods, Nepean, CA;
Ciena Corporation, Hanover, MD (US);
Abstract
A photonic integrated circuit including a photonic device and a gain element, said gain element formed by a process including: depositing by epitaxy a first doped layer onto a substrate; depositing by epitaxy an active layer capable of optical gain onto the first doped layer; depositing by epitaxy a second doped layer onto the active layer; pattern etching at least the second doped layer and the active layer to form a first ridge; and depositing by epitaxy a current blocking layer laterally adjacent to the first ridge at least partially filling the volume of active layer that was removed by the pattern etching; wherein the current blocking layer forms a portion of the photonic device.