Patent · US Active

Waveguide for extraction of light at low levels of reflection

US9921370B2 · kind B2 · utility

0Cited by

10References

22Claims

0Family size

Assignee

SYNTUNE AB · SE

Inventors

Jan-Olof Wesström · Barcelona, ES
Per Granestrand · Tyresö, SE
Stefan Hammerfeldt · Ekerö, SE

Key dates

Filing date	Sep 17, 2009
Grant date	Mar 20, 2018
Priority date	—
Expiry date	Aug 10, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/4207
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A waveguide for the extraction of light at low levels of reflection arranged to guide light from an electro-optical component on a chip to a facet on the chip for extraction includes a first part and a second part. The first part (4) is extended, the second part (5) includes a surface (JK) through which the light exits from the waveguide (1). A non-adiabatic longitudinal section (GHLM) is located after the first part (4) but before the surface (JK) in the direction of propagation of the light, and the surface (JK) forms in the plane of the chip a first angle (V1) with the optical axis (A) of the first part (4) that lies between 5 and 80 degrees.

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