The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2023
Filed:
Mar. 29, 2019
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Antonio D'Errico, Pisa, IT;
Alessandra Bigongiari, Pisa, IT;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Embodiments described herein relate to methods and apparatus for generating electromagnetic radiation in an electro-optical apparatus. An electro-optical apparatus comprises a core region; a cladding region extending around the core region, and a first layer of a material extending along an interface between the core region and the cladding region, wherein the first layer is configured with a changing refractive index along at least a first direction; and a set of driving electrical contacts configured to apply a voltage in a second direction on the first layer, such that electrons in the first layer are accelerated between the set of driving electrical contacts to generate a surface polariton wave at the interface between the core region and the cladding region, wherein the surface polariton wave propagates in the first direction, and wherein a thickness of the first layer is less than an extinction length of the surface polariton wave in the material, and the first layer is positioned a distance less than or equal to the extinction length of the surface polariton from the interface between the core region and the cladding region.