High-Q-Factor Silica-Based Racetrack Microring Resonators

• DOI: 10.3390/photonics8020043
• Publication Date: 2021-02-10T09:33:46Z
• Authors: Yue-Xin Yin; Xiao-Jie Yin; Xiao-Pei Zhang; Guan-Wen Yan; Yue Wang; Yuan-Da Wu; Jun-Ming An; Liang-Liang Wang; Da-Ming Zhang
• Keywords: Q factor

In this paper, ultrahigh-Q factor racetrack microring resonators (MRRs) are demonstrated based on silica planar lightwave circuits (PLCs) platform. A loaded Qload of 1.83 × 106 is obtained. The MRRs packaged with fiber-to-fiber loss ~5 dB. notch depth 3 dB and ~137 pm FSR observed. These show great potential in optical communications as filters. Moreover, the devices suitable used monolithic integration hybrid other devices, especially external cavity lasers (ECLs) to realize ultranarrow linewidths.