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. 14, 2008
Filed:
Sep. 22, 2004
Remus Nicolaescu, San Francisco, CA (US);
Mario J. Paniccia, Santa Clara, CA (US);
Remus Nicolaescu, San Francisco, CA (US);
Mario J. Paniccia, Santa Clara, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A device with optical switching between multiple layers of a semiconductor die is disclosed. In one aspect of the present invention, the disclosed apparatus includes a first semiconductor material layer of a semiconductor die. The first semiconductor material layer has a first optical waveguide. A second semiconductor material layer is also included in the semiconductor die. The second semiconductor material layer has a second optical waveguide. An insulating layer is disposed between the first and second semiconductor material layers such that there is an evanescent coupling between the first and second semiconductor material layers. There are modulated charge layers proximate to the insulating layer such that a coupling length of the evanescent coupling is controlled in response to the modulated charge layers.