Patent · US Active

Optical filter, optical device and method for determining a property of a substance by using an optical filter

US10288480B2 · kind B2 · utility

0Cited by

8References

17Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Martin Schell · Berlin, DE
Magnus Happach · Berlin, DE

Key dates

Filing date	Jun 1, 2016
Grant date	May 14, 2019
Priority date	—
Expiry date	Jun 1, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/27
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An optical filter for an optical data transmission system, including a substrate; a first and a second reflective structure which are spaced apart from each other such that they form a Fabry-Perot cavity, and at least one optical waveguide formed on or in the substrate, via which light can be coupled into the Fabry-Perot cavity and/or out of the Fabry-Perot cavity. The Fabry-Perot cavity formed by the first and the second reflective structure at least partly is a free-beam cavity, and the waveguide is an integrated waveguide which is formed by one or more layers arranged on the substrate, and the first and the second reflective structure are at least partly arranged in a cutout of the substrate or adjoin the cutout.

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