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:
Aug. 31, 2021
Filed:
Feb. 08, 2019
Applicants:
Seyed Sadreddin Mirshafieyan, Huntsville, AL (US);
Don Allen Gregory, Huntsville, AL (US);
Inventors:
Seyed Sadreddin Mirshafieyan, Huntsville, AL (US);
Don Allen Gregory, Huntsville, AL (US);
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/03 (2006.01);
U.S. Cl.
CPC ...
G02F 1/0327 (2013.01); G02F 1/0311 (2013.01);
Abstract
An electrically-tunable optical filter has an optical cavity that forms an absorption peak in light that is incident on the filter. The optical cavity includes a layer composed of a material with a high electro-optic coefficient so that the index of refraction of the layer changes in response to a voltage applied by a controller. By adjusting the voltage, the controller can control the index of refraction so that an absorption peak of the filter can be tuned as may be desired without having to alter the physical structure of the filter.