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:
Nov. 11, 2003
Filed:
Jan. 31, 2002
Shing Lee, Fremont, CA (US);
David A. G. Deacon, Los Altos, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A thermally wavelength tunable laser having selectively activated gratings includes a core, more than one periodic arrangement adjacent to the core, and thermo-optical material adjacent to each periodic arrangement. At an off temperature, the refractive index of the periodic arrangement and the adjacent thermo-optical material is the same. By selectively changing the temperature and hence the refractive index in the thermo-optical material adjacent to a selected periodic arrangement, the selected periodic arrangement forms a diffraction grating which can be tuned over a selected wavelength range. By selecting different periodic arrangements, different, non-overlapping wavelength ranges can be selected and the laser can be tuned over a broad range of wavelengths.