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. 14, 2023
Filed:
Apr. 14, 2021
Applicant:
Rockley Photonics Limited, Altrincham, GB;
Inventors:
Gerald Miller, Sierra Madre, CA (US);
Abu Thomas, Simi Valley, CA (US);
Andrea Trita, Pasadena, CA (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/12 (2006.01); G02B 6/136 (2006.01);
U.S. Cl.
CPC ...
G02B 6/136 (2013.01); G02B 2006/12061 (2013.01); G02B 2006/12097 (2013.01); G02B 2006/12107 (2013.01);
Abstract
A waveguide grating. The waveguide grating includes a rib composed of a first material. A first portion of the waveguide has a first layer on the rib, the first layer being composed of a second material; and a second layer on the first layer, the second layer being composed of a third material, the third material having a higher index of refraction than the first material.