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. 20, 2022
Filed:
Jul. 27, 2020
National Taiwan University, Taipei, TW;
Chao-Hsin Wu, Taipei, TW;
Chieh Lo, New Taipei, TW;
National Taiwan University, Taipei, TW;
Abstract
A distributed feedback (DFB) laser array includes a substrate, a semiconductor stacked structure, a first electrode layer, and a second electrode layer. The semiconductor stacked structure is formed above a surface of the substrate and includes two light-emitting modules and a tunnel junction. Each light-emitting module of the two light-emitting modules includes an active layer, a first cladding layer, and a second cladding layer. The active layer is installed between the first cladding layer and the second cladding layer, and the active layer has multiple lasing spots along a first direction, wherein the multiple lasing spots are used for generating multiple lasers. The tunnel junction is installed between the two light-emitting modules. The first electrode layer is formed above the semiconductor stacked structure. The second electrode layer is formed above another surface of the substrate.