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:
Feb. 19, 2008
Filed:
Sep. 30, 2005
Vinod M. Menon, Lawrenceville, NJ (US);
Milind R. Gokhale, Princeton, NJ (US);
Stephen R. Forrest, Princeton, NJ (US);
Yu Huang, Princeton, NJ (US);
Fengnian Xia, Plainsboro, NJ (US);
Vinod M. Menon, Lawrenceville, NJ (US);
Milind R. Gokhale, Princeton, NJ (US);
Stephen R. Forrest, Princeton, NJ (US);
Yu Huang, Princeton, NJ (US);
Fengnian Xia, Plainsboro, NJ (US);
The Trustees of Princeton University, Princeton, NJ (US);
Abstract
An asymmetric twin waveguide (ATG) structure with quantum-well intermixing in the taper region of the active waveguide is disclosed. The structure comprises a first waveguide, a second waveguide, and a taper formed in the second waveguide. The taper has an intermixed area formed therein comprising a plurality of quantum wells intermixed with a plurality of barriers. The quantum wells and barriers may be intermixed using plasma-enhanced intermixing such as, for example, Argon plasma enhanced intermixing. Quantum-well intermixing reduces absorption loss normally encountered in the movement of light between waveguides.