Presentation Information
[9a-N203-7][JSAP-Optica Joint Symposia Invited Talk] Low-noise frequency synthesis and terahertz wireless communication driven by compact turnkey Kerr combs
〇Zhanda Xie1, Kunpeng Jia1, Chenye Qin1, Xinwei Yi1, Zexing Zhao1, Shining Zhu1 (1.Nanjing University)
Keywords:
Kerr comb,Low-noise frequency synthesis,Terahertz wireless communication
The high-frequency microwave, spanning up to terahertz frequencies, stands as the pivotal technology propelling next-generation wireless communication, remote sensing, and radar systems. However, fundamental limit exists for low noise microwave generation, especially when the frequency is pushed towards the boundary of the conventional electronic technologies. Microresonator-based optical frequency comb (microcomb) has the potential to break the bottleneck. Here we demonstrate a low-noise and broadband frequency synthesizer based on compact turnkey microcombs, ranging from 10.1 GHz to 384 GHz and operating close to its low quantum-limited phase noise, within a compact setup size of 85 mm × 90 mm× 25 mm. This works open avenues for diverse applications in the high-frequency microwave photonic technologies, leveraging taking advantage of the near quantum-limited performance inside an electric-driven compact package. Such unprecedent low noise performance warrants a high signal-to-noise ratio, facilitating 64QAM modulation in terahertz wireless communication and enabling record high data rate of 240 Gbps without need for carrier phase estimation. Based on above results, this high-frequency microwave photonic device can serve as a key building block for the future information technology.