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:
May. 31, 2016
Filed:
Apr. 13, 2010
Wei Wu, Palo Alto, CA (US);
R. Stanley Williams, Portola Valley, CA (US);
Jingjing LI, Palo Alto, CA (US);
Theodore I. Kamins, Palo Alto, CA (US);
Marco Fiorentino, Mountain View, CA (US);
Wei Wu, Palo Alto, CA (US);
R. Stanley Williams, Portola Valley, CA (US);
Jingjing Li, Palo Alto, CA (US);
Theodore I. Kamins, Palo Alto, CA (US);
Marco Fiorentino, Mountain View, CA (US);
Hewlett Packard Enterprise Development LP, Houston, TX (US);
Abstract
A sub-wavelength grating device having controlled phase response includes a grating layer having line widths, line thicknesses, line periods, and line spacings selected to produce a first level of control in phase changes of different portions of a beam of light reflected from the grating layer. The device also includes a substrate affixed to the grating layer that produces a second level of control in phase changes of different portions of a beam of light reflected from the grating layer, the second level of control being accomplished abrupt stepping of the substrate in a horizontal dimension, ramping the substrate in a horizontal dimension, or changing the index of refraction in a horizontal dimension.