Optical out-coupler unit for out-coupling light from a waveguide

US12189192B2 · kind B2 · utility

Assignee

• Rockley Photonics Limited · GB

Inventors

• MohammadSadegh FARAJI-DANA · Pasadena, US
• Farzaneh Afshinmanesh · Pasadena, US
• Iain Anteney · Newport, GB
• Jeffrey Driscoll · San Jose, US
• Alexander Gondarenko · San Jose, US
• Dhiraj Kumar · Calabasas, US
• Abu Thomas · Oak Park, US
• Andrea Trita · Pasadena, US
• Aaron John Zilkie · Pasadena, US

Key dates

• Filing date: May 13, 2022
• Grant date: Jan 7, 2025
• Expiry date: Aug 20, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2006/12104
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical out-coupler unit for out-coupling light from a waveguide, comprising a substrate having a planar top surface, a waveguide arranged on the top surface of the substrate and having a facet, a reflective surface, wherein the reflective surface is arranged spaced apart from the facet and opposing the facet, wherein the reflective surface is inclined with respect to a normal to the top surface of the substrate by more than 45°. The optical out-coupler may be part of a photonic integrated chip (PIC).