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. 26, 2020
Filed:
Feb. 26, 2018
Applicant:
The George Washington University, Washington, DC (US);
Inventors:
Zhizhen Ma, Arlington, VA (US);
Volker J. Sorger, Alexandria, VA (US);
Assignee:
The George Washington University, Washington, DC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/00 (2006.01); G02F 1/17 (2019.01); G02F 1/01 (2006.01);
U.S. Cl.
CPC ...
G02F 1/0018 (2013.01); G02F 1/0081 (2013.01); G02F 1/011 (2013.01); G02F 1/0107 (2013.01); G02F 1/17 (2013.01); G02F 1/174 (2013.01); G02F 2201/06 (2013.01); G02F 2202/02 (2013.01); G02F 2202/10 (2013.01); G02F 2202/16 (2013.01); G02F 2203/10 (2013.01); G02F 2203/48 (2013.01);
Abstract
An electro-optical modulator using a graphene-based plasmonic slot is disclosed. The electro-optical modulator is comprised of a substrate layer, a dielectric spacer, a graphene layer, a first metal layer, and a second metal layer. The metal layers create a plasmonic slot that modulates between a light absorptive and light transparent state depending on the application of voltage across the modulator. Two or four graphene layers may be used to reduce power consumption and the size of the modulator.