High-Q-Factor Tunable Silica-Based Microring Resonators

作者：Yuexin Yin, Xiao-Pei Zhang, Xiaojie Yin, Yue Li, Xinru Xu, Junming An, Yuanda Wu, Xiaoping Liu, Daming Zhang · 发表于：Photonics · 年份：2021 · DOI：10.3390/photonics8070256 · 被引用次数：26 · 研究领域：Photonic and Optical Devices、Advanced Fiber Laser Technologies、Advanced Fiber Optic Sensors

A high-Q-factor tunable silica-based microring resonator (MRR) is demonstrated. To meet the critical-coupling condition, a Mach–Zehnder interferometer (MZI) as the tunable coupler was integrated with a racetrack resonator. Then, 40 mW electronic power was applied on the microheater on the arm of MZI, and a maximal notch depth of about 13.84 dB and a loaded Q factor of 4.47 × 106 were obtained. The proposed MRR shows great potential in practical application for optical communications and integrated optics.