Chen Xinyang, Gu Linpeng, Huang Peijian, Gan Xuetao, Wang Ning, Zhu Yong, Zhang Jie
The Key Laboratory of Optoelectronic Technology & System, Education Ministry of China, Chongqing University, Chongqing 400044, China.
Key Laboratory of Light-Field Manipulation and Information Acquisition, Ministry of Industry and Information Technology, Xi'an 710129, China.
Sensors (Basel). 2021 Sep 24;21(19):6370. doi: 10.3390/s21196370.
To resolve the problem of miscellaneous peaks and improve the accuracy of data processing in micro-ring resonators (MRRs), we propose an optical transmission model based on a Fabry-Perot (F-P) resonance effect in a SiN add-drop MRR-waveguide structure, which is analyzed using a coupled mode theory and stationary interference method. The analysis indicates the experimentally obtained miscellaneous peaks are mainly induced by the multiple reflections between the two end grating couplers, which form a F-P cavity. In addition, an anti-reflection film on the interface of the grating couplers is proposed to reduce the F-P resonance effect. This work could be useful to analyze optical transmission properties of other MRR-based structures.
为了解决微环谐振器（MRR）中杂峰问题并提高数据处理的准确性，我们提出了一种基于SiN分插复用MRR波导结构中法布里 - 珀罗（F-P）共振效应的光传输模型，该模型采用耦合模理论和稳态干涉法进行分析。分析表明，实验中获得的杂峰主要是由两个端部光栅耦合器之间的多次反射引起的，这两个光栅耦合器形成了一个F-P腔。此外，还提出在光栅耦合器的界面上设置抗反射膜以降低F-P共振效应。这项工作对于分析其他基于MRR的结构的光传输特性可能会有所帮助。
