Patent · US Active

Graphene photonics for resonator-enhanced electro-optic devices and all-optical interactions

US9599770B2 · kind B2 · utility

6Cited by

29References

20Claims

0Family size

Assignee

The Trustees of Columbia University in the City of New York · US

Inventors

Dirk Robert Englund · San Diego, US
Xuetao Gan · New York, US

Key dates

Filing date	Sep 30, 2014
Grant date	Mar 21, 2017
Priority date	—
Expiry date	Apr 25, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S977/755
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Techniques for coupling light into graphene using a planar photonic crystal having a resonant cavity characterized by a mode volume and a quality factor and at least one graphene layer positioned in proximity to the planar photonic crystal to at least partially overlap with an evanescent field of the resonant cavity. At least one mode of the resonant cavity can couple into the graphene layer via evanescent coupling. The optical properties of the graphene layer can be controlled, and characteristics of the graphene-cavity system can be detected. Coupling light into graphene can include electro-optic modulation of light, photodetection, saturable absorption, bistability, and autocorrelation.

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