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:
Jul. 15, 2003
Filed:
Dec. 06, 2001
Sang-Wan Ryu, Taejon, KR;
Je Ha Kim, Taejon, KR;
Abstract
A laser resonator is implemented by using the −1-st order reflection peaks of a sampled grating so that the multi-wavelength single mode light source array can be manufactured easily and economically. A multi-wavelength semiconductor laser array comprises a substrate; a plurality of laser stripes arranged with a predetermined space on the substrate, each being divided into two sections; a multiplicity of asymmetric sampled gratings distributed with sampling periods different from each other on the bottom of each active layer; and a number of effective refractive index changing layers, each arranged on one section of each laser stripe to make the Bragg wavelengths different at the two sections.