黄殷

副教授 硕士生导师

入职时间:2013-07-01

所在单位:物理与电子学院

学历:博士研究生毕业

性别:男

学位:博士学位

在职信息:在职

毕业院校:美国路易斯安那州立大学

学科:电子科学与技术

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2015年论文发表

发布时间:2020-04-25

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Our paper "Slow-light enhanced subwavelength plasmonic waveguide refractive index sensors" by Yin Huang*, Changjun Min, Pouya Dastmalchi and Georgios Veronis is accepted in Optics express.

Website: https://www.osapublishing.org/oe/abstract.cfm?uri=oe-23-11-14922                                

 

Abstract: We introduce slow-light enhanced subwavelength scale refractive index sensors which consist of a plasmonic metal-dielectric-metal (MDM) waveguide based slow-light system sandwiched between two conventional MDM waveguides. We first consider a MDM waveguide with small width structrue for comparison, and then consider two MDM waveguide based slow light systems: a MDM waveguide side-coupled to arrays of stub resonators system and a MDM waveguide side-coupled to arrays of double-stub resonators system. We find that, as the group velocity decreases, the sensitivity of the effective index of the waveguide mode to variations of the refractive index of the fluid filling the sensors as well as the sensitivities of the reflection and transmission coefficients of the waveguide mode increase. The sensing characteristics of the slow-light waveguide based sensor structures are systematically analyzed. We show that the slowlight enhanced sensors lead to not only 3.9 and 3.5 times enhancements in the refractive index sensitivity, and therefore in the minimum detectable refractive index change, but also to 2 and 3 times reductions in the required sensing length, respectively, compared to a sensor using a MDM waveguide with small width structure.      

                                                                                                     

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