Generation of azimuthally or radially polarized radiation in optical waveguides

US9459403B2 · kind B2 · utility

Assignees

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE
• Friedrich-Schiller-Universitat Jena · DE

Inventors

• Andreas Tuennermann · Jena, DE
• Christoph Jocher · Stuttgart, DE
• César Jáuregui Misas · Jena, DE
• Jens Limpert · Jena, DE

Key dates

• Filing date: Apr 14, 2011
• Grant date: Oct 4, 2016
• Expiry date: Apr 14, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/0804
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention relates to an apparatus for generating azimuthally or radially polarized radiation by means of an optical waveguide (1), wherein the optical waveguide (1) has a structure which is suitable for conducting azimuthally or radially polarized modes (5, 7). The invention proposes that the azimuthally or radially polarized modes (5, 7) in the optical waveguide (1) have different effective refractive indices and, within the optical waveguide (1), a narrow-band grating (2) is arranged, in particular a fiber Bragg grating (2) which is designed such that the spectral distance between two azimuthally or radially polarized resonant modes (5, 7) is equal to or greater than the associated spectral bandwidth.