On-chip broadband light source

US10338313B2 · kind B2 · utility

Assignees

• UNIVERSITEIT GENT · BE
• IMEC VZW · BE

Inventors

• Roeland Baets · Deinze, BE
• Günther Roelkens · Melle, BE
• Andreas De Groote · Sint-Antelinks, BE
• Paolo Cardile · Evergem, BE
• Ananth Subramanian · Komangalam, IN

Key dates

• Filing date: Aug 22, 2016
• Grant date: Jul 2, 2019
• Expiry date: Aug 22, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2006/12123
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An on-chip broadband radiation source, and methods for its manufacture such that a photonics IC comprises an optical waveguide such as a semiconductor waveguide, a thin III-V material membrane with absorption capability for absorbing an optical pump signal induced in the waveguide. The III-V membrane comprises a LED implemented therein. The photonics IC also comprises a coupling means between the waveguide and the membrane. The device provides a broadband radiation source at a wavelength longer than the wavelength of the transferred radiation. The broadband signal can then be coupled out through the waveguide and used in the chip.