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:
Dec. 24, 2024
Filed:
Jun. 16, 2021
Applicant:
Oxford University Innovation Limited, Oxford, GB;
Inventors:
Assignee:
OXFORD UNIVERSITY INNOVATION LIMITED, Oxford, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/126 (2006.01); G02B 6/12 (2006.01); G02B 6/27 (2006.01);
U.S. Cl.
CPC ...
G02B 6/126 (2013.01); G02B 6/2733 (2013.01); G02B 2006/12035 (2013.01);
Abstract
An optical waveguide () is disclosed, for guiding light in a photonic circuit comprising a layer of phase change material () for modulating the phase of the guided light. The phase change material () is switchable between at least a stable crystalline state and a stable amorphous state each with different refractive indexes. The phase change material (101) exhibits an extinction coefficient of less than 0.1 in both states for wavelengths greater than 1000 nm.