Chen Jingye, Li Wenlei, Kang Zhe, Lin Zongxing, Zhao Shi, Lian Daixin, He Jijun, Huang Dongmei, Dai Daoxin, Shi Yaocheng
State Key Laboratory for Extreme Photonics and Instrumentation, International Research Center for Advanced Photonics, Ningbo Innovation Center, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310058, China.
National Key Laboratory of Microwave Photonics, College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 211016, China.
Nat Commun. 2025 Jan 26;16(1):1056. doi: 10.1038/s41467-025-56483-9.
The frequency-modulated continuous-wave (FMCW) technology combined with optical phased array (OPA) is promising for the all-solid-state light detection and ranging (LiDAR). We propose and experimentally demonstrate a silicon integrated OPA combined with an optical frequency microcomb for parallel LiDAR system. For realizing the parallel wavelengths emission consistent with Rayleigh criterion, the wide waveguide beyond single mode region combined with the bound state in the continuum (BIC) effect is harnessed to obtain an ultra-long optical grating antenna array. The single soliton comb, generating about multiple distinct wavelength channels and combined with the high performance integrated OPA, is also demonstrated for coherent three-dimensional (3D) imaging by utilizing FMCW method. The modulation bandwidth of parallel modulation of the microcomb is beyond the modulation region of single soliton microcomb. The result paves the way for developing all-solid-state and ultrahigh-frame-rate coherent LiDAR systems.
调频连续波（FMCW）技术与光学相控阵（OPA）相结合，在全固态光探测与测距（LiDAR）方面具有广阔前景。我们提出并通过实验证明了一种用于并行LiDAR系统的硅基集成OPA与光学频率微梳相结合的方案。为了实现与瑞利准则一致的并行波长发射，利用单模区域之外的宽波导结合连续域束缚态（BIC）效应来获得超长光学光栅天线阵列。还展示了产生约多个不同波长通道的单孤子微梳，并将其与高性能集成OPA相结合，利用FMCW方法进行相干三维（3D）成像。微梳的并行调制带宽超出了单孤子微梳的调制区域。该结果为开发全固态和超高帧率相干LiDAR系统铺平了道路。
