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:
Oct. 28, 2008
Filed:
Jun. 08, 2005
David P. Bour, Cupertino, CA (US);
Ashish Tandon, Sunnyvale, CA (US);
Michael R. T. Tan, Menlo Park, CA (US);
David P. Bour, Cupertino, CA (US);
Ashish Tandon, Sunnyvale, CA (US);
Michael R. T. Tan, Menlo Park, CA (US);
Avago Technologies Fiber IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
Double well structures in electro-absorption modulators are created in quantum well active regions by embedding deep ultra thin quantum wells. The perturbation introduced by the embedded, deep ultra thin quantum well centered within a conventional quantum well lowers the confined energy state for the wavefunction in the surrounding larger well and typically results in the hole and electron distributions being more confined to the center of the conventional quantum well. The extinction ratio provided by the electro-absorption modulator is typically increased.