Su Guoshuai, Li Mingyu, Yang Zhiping, Xie Jiayi, Song Yuxia, He Jian-Jun
Opt Lett. 2022 Sep 1;47(17):4327-4330. doi: 10.1364/OL.463589.
We demonstrate a novel, to the best of our knowledge, temperature-insensitive optical sensor based on two cascaded identical microring resonators (CIMRR) in this Letter. The structural parameters of the reference ring and sensing ring are designed to be identical. The upper cladding in the sensing windows of the two rings is removed. With different microfluidic channels, the reference ring and sensing ring are exposed to the reference solution and reagent sample, respectively. For wavelength interrogation experiments in the transmission spectrum contrast ratio and low-cost intensity interrogation experiments, the sensitivities of refractive index (RI) sensing are 3402.4 dB/RIU and 1087.3 dB/RIU, respectively, while the temperature sensitivities are as low as 0.023 dB/K and 0.0124 dB/K, respectively.
在本信函中，据我们所知，我们展示了一种基于两个级联的相同微环谐振器（CIMRR）的新型温度不敏感光学传感器。参考环和传感环的结构参数设计为相同。两个环的传感窗口中的上包层被去除。通过不同的微流体通道，参考环和传感环分别暴露于参考溶液和试剂样品。对于透射光谱对比度中的波长询问实验和低成本强度询问实验，折射率（RI）传感的灵敏度分别为3402.4 dB/RIU和1087.3 dB/RIU，而温度灵敏度分别低至0.023 dB/K和0.0124 dB/K。
