Portable Atmospheric Transfer of Microwave Signal Using Diode Laser with Timing Fluctuation Suppress

• 作 者: CHEN Shijun BAI Qingsong CHEN Dawei SUN Fuyu HOU Dong
• 机 构: ZTE Corporation, Shenzhen 518057, China;University of Electronic Science and Technology of China, Ch
• 出 处: 中兴通讯技术（英文版）
• 发表日期: 2018年4期
• 关键词: atmospheric communication frequency transfer diode laser timing fluctuation supp

We demonstrate an atmospheric transfer of microwave signal over a 120 m outdoor free-space link using a compact diode laser with a timing fluctuation suppression technique. Timing fluctuation and Allan Deviation are both measured to charac-terize the instability of transferred frequency incurred during the transfer process. By transferring a 100 MHz microwave signal within 4500 s, the total root-mean-square (RMS) timing fluctuation was measured to be about 6 ps, with a fractional frequency instability on the order of 1 × 10?12 at 1 s, and order of 7 × 10?15 at 1000 s. This portable atmospheric fre-quency transfer scheme with timing fluctuation suppression can be used to distribute an atomic clock-based frequency over a free-space link.