Linear and nonlinear coupling of light in twin-resonators with Kerr nonlinearity  

作　　者：SANDAN WANG JINPENG YUAN LIRONG WANG LIANTUAN XIAO AND SUOTANG JIA 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University,Taiyuan 030006,China [2]Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan 030006,China

出　　处：《Photonics Research》2024年第11期2733-2740,共8页光子学研究(英文版)

基　　金：Max-Planck-Gesellschaft;European Research Council(756966)。

摘　　要：Nonlinear effects in microresonators are efficient building blocks for all-optical computing and telecom systems.With the latest advances in microfabrication,coupled microresonators are used in a rapidly growing number of applications.In this work,we investigate the coupling between twin-resonators in the presence of Kerr nonlinearity.We use an experimental setup with controllable coupling between two high-Q resonators and discuss the effects caused by the simultaneous presence of linear and nonlinear coupling between the optical fields.Linearcoupling-induced mode splitting is observed at low input powers,with the controllable coupling leading to a tunable mode splitting.At high input powers,the hybridized resonances show spontaneous symmetry breaking(SSB)effects,in which the optical power is unevenly distributed between the resonators.Our experimental results are supported by a detailed theoretical model of nonlinear twin-resonators.With the recent interest in coupled resonator systems for neuromorphic computing,quantum systems,and optical frequency comb generation,our work provides important insights into the behavior of these systems at high circulating powers.

关 键 词：COUPLING NONLINEAR POWERS 

分 类 号：O17[理学—数学]