Waveguide crossings having arms shaped with a non-linear curvature

US10989873B1 · kind B1 · utility

Assignees

• GLOBALFOUNDRIES U.S. Inc. · US
• Khalifa University of Science and Technology · AE

Inventors

• Ajey Poovannummoottil Jacob · Watervliet, US
• Yusheng Bian · Ballston Lake, US
• Sujith Chandran · Abu Dhabi, AE
• Marcus Dahlem · Santa Maria da Feira, PT

Key dates

• Filing date: Oct 25, 2019
• Grant date: Apr 27, 2021
• Expiry date: Oct 25, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2006/12097
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Structures for a waveguide crossing and methods of fabricating a structure for a waveguide crossing. A waveguide crossing includes a central section and an arm positioned between a waveguide core and the central section. The arm and the waveguide core are aligned along a longitudinal axis. The arm is coupled to the waveguide core at a first interface, and the arm is coupled to a portion of the central section at a second interface. The arm has a first width at the first interface, a second width at the second interface, and a third width between the first interface and the second interface. The third width is greater than either the first width or the second width.