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:
Aug. 13, 1991
Filed:
Aug. 07, 1990
Applicant:
Inventors:
Ralph A Logan, Morristown, NJ (US);
Tawee Tanbun-Ek, Summit, NJ (US);
Henryk Temkin, Berkeley Heights, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ; H01S / ;
U.S. Cl.
CPC ...
372 45 ; 372-6 ;
Abstract
Disclosed is a graded index separate confinement heterostructure quantum well (GRIN-SCH QW) laser with continuously graded, substantially index matched InGaAsP confinement layer. The inventive device is well adapted for high power output in the wavelength region 1.2-1.68 .mu.m. In particular, it can readily be designed to have an output wavelength that makes it suitable as pump source for Er-doped optical fiber amplifiers. A method of manufacturing a laser according to the invention is also disclosed.