实时双环谐振腔光谱包络拟合  

Envelope fitting for real-time cascaded microring resonator’s output spectrum

作　　者：赵凯浩 李明宇 王朝宇 陈鑫 关博仁 何建军[2] 林初月 董文飞 ZHAO Kai-hao;LI Ming-yu;WANG Zhao-yu;CHEN Xin;GUAN Bo-ren;HE Jian-Jun;LIN Chu-yue;DONG Wen-fei(Department of Optical Engineering,School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun 130022,China;State Key Laboratory of Modern Optical Instrumentation,Zhejiang University,Hangzhou 310027,China;Zhejiang Lightip Electronics Technologies Co.,Ltd.,Wenzhou 325011,China;Suzhou Institute of Biomedical Engineering and Technology,Chinese Academy of Science,Suzhou 215163,China)

机构地区：[1]长春理工大学光电工程学院光学工程系,吉林长春130022 [2]浙江大学现代光学仪器国家重点实验室,浙江杭州310027 [3]浙江光尖电子技术有限公司,浙江温州325011 [4]中国科学院苏州生物医学工程研究所,浙江苏州215163

出　　处：《中国光学（中英文）》2024年第4期780-788,共9页Chinese Optics

基　　金：国家自然科学基金项目(No.62027825);吉林省自然科学基金(No.20220101130JC);高等学校学科创新引智计划(No.D21009)。

摘　　要：双环级联谐振腔(Cascaded Microring Resonators,CMRR)传感器作为一种新型的光学传感器,因具有高灵敏度、易于集成、功耗小等优点被广泛应用于生物、医学等领域。为了实现CMRR传感器输出光谱的实时数据分析处理,提出了一种基于Python的实时CMRR传感器输出光谱包络拟合方法。首先,利用不同的拟合模型对CMRR传感器输出光谱进行拟合;然后,通过灵敏度误差百分比对不同拟合模型的拟合误差进行比较,结果显示平滑样条拟合法在实时处理CMRR传感器输出光谱过程中表现最佳;最后对不同浓度的NaCl溶液进行实时输出光谱采集处理,验证了CMRR传感器输出光谱实时采集处理程序的可靠性。实验结果表明CMRR传感器的波长漂移量与溶液浓度呈线性关系。通过计算可知CMRR传感器对于盐水的灵敏度约为671.03529 nm/RIU。Cascaded Microring Resonators(CMRR),a new type of optical sensor,are widely used in biology,medicine,and other fields because of their high sensitivity,easy integration,and low power consumption.In this paper,we propose a Python-based envelope fitting method for real-time CMRR sensor’s output spec-trum to achieve real-time data analysis and processing of the CMRR sensor’s output spectrum.First,differ-ent fitting models were used to fit the output spectrum of the CMRR sensor.Then,the fitting errors of differ-ent fitting models were compared by sensitivity error percentage,and it was concluded that the smooth spline fitting method performed best in real-time processing of the output spectrum of the CMRR sensor.Finally,NaCl solution with different concentrations was used for real-time acquisition and processing of the output spectrum.The reliability of the real-time acquisition and processing program for the CMRR sensor’s output spectrum is verified.The experimental results show that the wavelength drift of the CMRR sensor is linearly related to the concentration of the solution.It can be seen from the calculation that the sensitivity of the CMRR sensor for brine is about 671.03529 nm/RIU.

关 键 词：集成光学 双环级联谐振腔 包络拟合 折射率 光学谐振腔 

分 类 号：TN256[电子电信—物理电子学]