基于同心环谐振器的高品质因数表面等离子体折射率传感器。
Plasmonic Refractive Index Sensor with High Figure of Merit Based on Concentric-Rings Resonator.
作者信息
Zhang Zhaojian, Yang Junbo, He Xin, Zhang Jingjing, Huang Jie, Chen Dingbo, Han Yunxin
机构信息
College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China.
Center of Material Science, National University of Defense Technology, Changsha 410073, China.
出版信息
Sensors (Basel). 2018 Jan 4;18(1):116. doi: 10.3390/s18010116.
A plasmonic refractive index (RI) sensor based on metal-insulator-metal (MIM) waveguide coupled with concentric double rings resonator (CDRR) is proposed and investigated numerically. Utilizing the novel supermodes of the CDRR, the FWHM of the resonant wavelength can be modulated, and a sensitivity of 1060 nm/RIU with high figure of merit (FOM) 203.8 is realized in the near-infrared region. The unordinary modes, as well as the influence of structure parameters on the sensing performance, are also discussed. Such plasmonic sensor with simple framework and high optical resolution could be applied to on-chip sensing systems and integrated optical circuits. Besides, the special cases of bio-sensing and triple rings are also discussed.
提出了一种基于金属-绝缘体-金属（MIM）波导与同心双环谐振器（CDRR）耦合的表面等离子体折射率（RI）传感器，并进行了数值研究。利用CDRR的新型超模，可以调制谐振波长的半高宽（FWHM），并在近红外区域实现了1060 nm/RIU的灵敏度和203.8的高品质因数（FOM）。还讨论了非常规模式以及结构参数对传感性能的影响。这种具有简单结构和高光学分辨率的表面等离子体传感器可应用于片上传感系统和集成光学电路。此外，还讨论了生物传感和三环的特殊情况。
Zotero 插件