Lidar system based on silicon-based integrated magneto-optical circulator

US12326521B2 · kind B2 · utility

Assignee

• University of Electronic Science and Technology of China · CN

Inventors

• Lei Bi · Boise, US
• Wei Yan · Guangxi, CN
• Shuyuan Liu · Beijing, CN
• Jun Qin · Chengdu, CN
• Yan Zhang · Chengdu, CN
• Longjiang Deng · Chengdu, CN

Key dates

• Filing date: May 7, 2021
• Grant date: Jun 10, 2025
• Expiry date: Apr 11, 2044

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2201/17
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A lidar system, including: a laser, an optical detector, a laser antenna, and a silicon-based integrated magneto-optical circulator. The silicon-based integrated magneto-optical circulator includes a silicon-based integrated Mach-Zehnder interference structure or a silicon-based integrated micro-ring structure, and silicon-based integrated magneto-optical waveguides. The silicon-based integrated magneto-optical circulator further includes an input port, a receiving port, and an emission port. The laser is aligned and coupled to the input port of the silicon-based integrated magneto-optical circulator via an optical fiber, a grating coupler, or an edge coupler. The optical detector is aligned and coupled to the receiving port of the silicon-based integrated magneto-optical circulator via the optical fiber, the grating coupler, or the edge coupler. The laser antenna is aligned and coupled to the emission port of the silicon-based integrated magneto-optical circulator via the optical fiber, the grating coupler, or the edge coupler.