基于氮化硅微腔的2 μm波段孤子光梳研究OA北大核心CSTPCD
Characterization of 2 μm band soliton optical comb based on silicon nitride microcavity
本文研究了氮化硅微腔在2 μm波段的光学频率梳产生.通过几何设计对氮化硅波导进行色散调控,选取合适的总线波导尺寸,从热吸收理论出发,讨论氮化硅微腔不同调制频率下的热折射噪声.以非线性薛定谔方程为基础模型,研究不同色散作用下的腔体演变过程.数值结果表明,氮化硅在2 μm波段能够更清晰地观察系统的滞后状态转变,即系统向稳定域转变过程的弛豫振荡现象,同时在高阶色散的作用下,腔体能够更快地向稳态孤子转变,这为研究呼吸孤子提供了方案.
The optical frequency comb(OFC)generation of 2 μm silicon nitride microcavity is investigated.Dispersion modulation of silicon nitride waveguides is carried out by geometrical design.Appropriate bus waveguide dimensions are selected,and the thermal refraction noise of silicon nitride microcavities at different modulation frequencies is discussed by the thermal absorption theory.The nonlinear Schrödinger equation is used as the basic model to study the evolution of the cavity under different dispersion effects.The numerical results show that silicon nitride is able to observe the hysteret-ic state transition of the system,i.e.,the relaxation oscillation phenomenon during the transition of the system to the sta-ble domain,more clearly in the 2 μm band.At the same time,the cavity is able to transition to the steady state soliton faster under the action of higher-order dispersion,which provides a scheme to study the respiratory soliton.
程如敏;孙嘉浩;吴加贵;郭登极;许佼;杨俊波;闫培光
深圳大学 物理与光电工程学院 深圳市激光工程重点实验室,广东 深圳 518060西南大学 物理科学与技术学院,重庆 400715深圳大学 机电与控制工程学院 深圳大学半导体制造研究院,广东 深圳 518060国防科技大学 理学院,湖南 长沙 410015
电子信息工程
光学频率梳色散调控热折射噪声呼吸孤子
optical frequency combsdispersion modulationthermorefractive noisebreathe soliton
《红外与毫米波学报》 2024 (004)
442-449 / 8
国家自然科学基金(62205219,52103304),深圳市科技计划项目(JCYJ20190808160205460,JCYJ20220818095604010) Supported by the National Natural Science Foundation of China(62205219,52103304),Shenzhen Science and Technology Pro-gram(JCYJ20190808160205460,JCYJ20220818095604010)
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