Patent · US Expired

Optical waveguide grating coupler

US7245803B2 · kind B2 · utility

38Cited by

17References

51Claims

0Family size

Assignee

Luxtera, Inc. · US

Inventors

Lawrence C. Gunn, III · Encinitas, US
Thierry Pinguet · Cardiff-by-the-Sea, US
Maxime Jean Rattier · Paris, FR

Key dates

Filing date	Feb 10, 2004
Grant date	Jul 17, 2007
Priority date	—
Expiry date	Jun 24, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG02B2006/1213
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical waveguide grating coupler for coupling light between a planar waveguide and an optical element such as an optical fiber. The optical waveguide grating coupler includes a grating comprising a plurality of elongate scattering elements. The optical waveguide grating coupler is preferably flared, and in various embodiments has hyperbolically shaped sidewalls. The elongate scattering elements are preferably curved, and in some embodiments, the scattering elements have elliptically curved shapes. Preferably, the elongated scattering elements have grating widths selected to accommodate the desired optical intensity distribution.

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