Patent · US Active

Silicon-graphene waveguide photodetectors, optically active elements and microelectromechanical devices

US8554022B1 · kind B1 · utility

47Cited by

3References

28Claims

0Family size

Assignee

University of Washington through its Center for Commercialization · US

Inventors

Michael J. Hochberg · New York, US
Jeremy Witzens · Aachen, DE

Key dates

Filing date	Dec 21, 2010
Grant date	Oct 8, 2013
Priority date	—
Expiry date	Mar 26, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/547
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Systems and methods for modulating light with light in high index contrast waveguides clad with graphene. Graphene exhibits a large nonlinear electro-optic constant χ3. Waveguides fabricated on SOI wafers and clad with graphene are described. Systems and methods for modulating light with light are discussed. Optical logic gates are described. Waveguides having closed loop structures such as rings and ovals, Mach-Zehnder interferometer, grating, and Fabry-Perot configurations, are described. Optical signal processing methods, including optical modulation at Terahertz frequencies, are disclosed. Optical detectors are described. Microelectromechanical and nanoelectromechanical systems using graphene on silicon substrates are described.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.