Coherent photon analog-to-digital conversion device

US10649308B2 · kind B2 · utility

Assignee

• Shanghai Jiao Tong Technology · CN

Inventors

• Weiwen Zou · Shanghai, CN
• Guang Yang · Vancouver, CA
• Lei Yu · Huangguan, CN
• Na Qian · Shanghai, CN
• Jianping Chen · Shanghai, CN

Key dates

• Filing date: Jul 16, 2019
• Grant date: May 12, 2020
• Expiry date: Jul 16, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03M1/12
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A coherent photon analog-to-digital conversion device comprising an optical clock oscillation source, a sampled signal source, a photon sampling gate, a photoelectric detection module, an electrical sampling module, a phase detection module, a loop filter, and signal feedback links. By adjusting the optical clock oscillating source or the sampled signal source, the invention makes the two highly coherent, thereby reducing the clock jitter and greatly improving the sampling precision. It is very important for improving the performance of microwave photon systems that require high time accuracy and high sampling accuracy, such as microwave photon radar and optical communication systems.