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. 15, 2005
Filed:
Sep. 28, 2001
Ansheng Liu, Cupertino, CA (US);
Mario J. Paniccia, Santa Clara, CA (US);
Remus Nicolaescu, San Jose, CA (US);
Andrew C. Alduino, San Jose, CA (US);
Ling Liao, Sunnyvale, CA (US);
Ansheng Liu, Cupertino, CA (US);
Mario J. Paniccia, Santa Clara, CA (US);
Remus Nicolaescu, San Jose, CA (US);
Andrew C. Alduino, San Jose, CA (US);
Ling Liao, Sunnyvale, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A semiconductor-based tunable add/drop method and apparatus. In one aspect of the present invention, a method according to an embodiment of the present invention includes splitting a first optical beam having multiple wavelengths into second and third optical beams with a first 3 dB optical coupler disposed in a semiconductor substrate. Portions of the second and third optical beams having a tunable wavelength are reflected back to the first 3 dB optical coupler with first and second pluralities of silicon and polysilicon interfaces, respectively, disposed along the semiconductor substrate. In another embodiment, the portions of the second and third optical beams having a tunable wavelength are reflected back to the first 3 dB optical coupler with first and second pluralities of modulated charged regions. Portions of the second and third optical beams not reflected are directed to a second 3 dB optical coupler disposed in the semiconductor substrate. The portions of the second and third optical beams not reflected are combined into a fourth optical beam with the second 3 dB optical coupler.