February 27, 2024 | Haochen Yan, Alekhya Ghosh, Arghadeep Pal, Hao Zhang, Toby Bi, George Ghalanos, Shuangyou Zhang, Lewis Hill, Yaojing Zhang, Yongyong Zhuang, Jolly Xavier, Pascal Del'Haye
The article presents a novel approach to real-time imaging and analysis of standing wave patterns in optical ring resonators using a short-wave infrared (SWIR) camera. The standing wave patterns are generated through bidirectional pumping of a microresonator, and the scattered light is collected by the SWIR camera. The recorded scattering patterns are wavelength-dependent, and the scattered intensity exhibits a linear relationship with the circulating power within the microresonator. By modulating the relative phase between the two pump waves, the generated standing waves can be controlled, enabling precise characterization of the resonator. This visualization technique allows for subwavelength distance measurements of scattering targets with nanometer-level accuracy, making it useful for on-chip near-field sensing, real-time characterization of photonic integrated circuits, and backscattering control in telecom systems. The study also includes theoretical simulations and experimental demonstrations to validate the method, showing its potential for advanced applications in quantum optics and nanophotonics.The article presents a novel approach to real-time imaging and analysis of standing wave patterns in optical ring resonators using a short-wave infrared (SWIR) camera. The standing wave patterns are generated through bidirectional pumping of a microresonator, and the scattered light is collected by the SWIR camera. The recorded scattering patterns are wavelength-dependent, and the scattered intensity exhibits a linear relationship with the circulating power within the microresonator. By modulating the relative phase between the two pump waves, the generated standing waves can be controlled, enabling precise characterization of the resonator. This visualization technique allows for subwavelength distance measurements of scattering targets with nanometer-level accuracy, making it useful for on-chip near-field sensing, real-time characterization of photonic integrated circuits, and backscattering control in telecom systems. The study also includes theoretical simulations and experimental demonstrations to validate the method, showing its potential for advanced applications in quantum optics and nanophotonics.