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. 16, 2003
Filed:
Mar. 31, 2000
Yuliya A. Akulova, Allentown, PA (US);
Sung-nee G. Chu, Murray Hill, NJ (US);
Michael Geva, Allentown, PA (US);
Mark S. Hybertsen, West Orange, NJ (US);
Charles W. Lentz, Sinking Spring, PA (US);
Abdallah Ougazzaden, Breinigsville, PA (US);
TriQuint Technology Holding Co., Hillsboro, OR (US);
Abstract
A method for decreasing the diffusion of dopant atoms in the active region, as well as the interdiffuision of different types of dopant atoms among adjacent doped regions, of optoelectronic devices is disclosed. The method of the present invention employs a plurality of InAlAs and/or InGaAlAs layers to avoid the direct contact between the dopant atoms and the active region, and between the dopant atoms in adjacent blocking structures of optoelectronic devices. A semi-insulating buried ridge structure, as well as a ridge structure, in which the interdiffusion of different types of dopant atoms is suppressed are also disclosed.