Optical frequency comb generation in integrated lithium niobate devices

US11809061B2 · kind B2 · utility

Assignees

• President and Fellows of Harvard College · US
• The Board of Trustees of the Leland Stanford Junior University · US

Inventors

• Mian Zhang · Cambridge, US
• Cheng Wang · Taipei, TW
• Marko Loncar · Somerville, US
• Brandon Taylor Buscaino · Cambridge, US
• Joseph M. Kahn · Redwood City, US

Key dates

• Filing date: Oct 20, 2022
• Grant date: Nov 7, 2023
• Expiry date: Oct 20, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G02F2203/56
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Kerr and electro-optic frequency comb generation in integrated lithium niobate devices is provided. In various embodiments, a microring resonator comprising lithium niobate is disposed on a thermal oxide substrate. The microring resonator has inner and outer edges. Electrodes are positioned along the inner and outer edges of the microring resonator. The electrodes are adapted to modulate the refractive index of the microring. A pump laser is optically coupled to the microring resonator. The microring resonator is adapted to emit an electro-optical frequency comb when receiving a pump mode from the pump laser and when the electrodes are driven at a frequency equal to a free-spectral-range of the microring resonator.