Author Affiliations
Abstract
1 State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
2 Peking University Shenzhen Research Institute, Shenzhen 518057, China
3 Nano-optoelectronics Frontier Center of Ministry of Education, Peking University, Beijing 100871, China
Optical microring resonators are extensively employed in a wide range of physical studies and applications due to the resonance enhancement property. Incorporating coupling control of a microring resonator is necessary in many scenarios, but modifications are essentially added to the resonator and impair the capability of optical enhancement. Here, we propose a flexible coupling structure based on adiabatic elimination that allows low-loss active coupling control without any modifications to the resonators. The self-coupling coefficient can be monotonically or non-monotonically controllable by the proposed coupler, potentially at a high speed. The characteristic of the coupler when implemented in silicon microring resonators is investigated in detail using substantiated analytical theory and experiments. This work provides a general method in coupling control while ensuring the resonance enhancement property, making active coupling control in a resonator-waveguide system feasible.
silicon photonics adiabatic elimination resonance system Chinese Optics Letters
2020, 18(1): 013601
将"高重复率被动调Q激光器"引入激光实验教学中,并针对存在激发态吸收(ESA)的被动式调Q激光器,采用绝热近似(AEA)和微分方程的Hopf分岔理论对实验现象进行了理论分析,对实验结果进行了解释.本实验受到了学生的欢迎,获得了满意的教学效果.
教学实验 被动式调Q 绝热近似 experiment passive Q-switching adiabatic elimination approximation(AEA)