Device for coupling a plurality of different fibre modes

US10001601B2 · kind B2 · utility

Assignee

• IHP GMBH—INNOVATIONS FOR HIGH PERFORMANCE MICROELECTRONICS / LEIBNIZ-INSTITUT FÜR INNOVATIVE MIKROELEKTRONIK · DE

Inventors

• Benjamin Wohlfeil · Berlin, DE
• Lars Zimmermann · Berlin, DE

Key dates

• Filing date: Mar 3, 2014
• Grant date: Jun 19, 2018
• Expiry date: Mar 3, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2006/12159
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An integrated optical coupler device comprising, on a substrate surface: an integrated optical coupling grating extending in lateral directions parallel to the substrate surface and which, by diffraction at its grating structures, either converts electromagnetic waves, guided parallel to the substrate surface, of at least two waveguide modes of integrated optical waveguides into fiber modes propagating perpendicularly to the substrate surface, or converts electromagnetic waves, propagating perpendicularly to the substrate surface, of a fiber mode into electromagnetic waves, propagating parallel to the substrate surface, of at least two waveguide modes, and a first conductor pair, connected to the coupling grating and formed by a first and a second integrated optical waveguide, through which, in mutually opposite first and second directions parallel to the substrate surface, electromagnetic waves of at least two waveguide modes can be conducted to the coupling grating or can be conducted away from the coupling grating.