Numerical Study on a Bound State in the Continuum Assisted Plasmonic Refractive Index Sensor

doi:10.3390/photonics9040224

	Numerical Study on a Bound State in the Continuum Assisted Plasmonic Refractive Index Sensor
	Tang, Shulin1,2,3 ; Chang, Chang1 ; Zhou, Peiji1 ; Zou, Yi1,4
	2022-04
发表期刊	PHOTONICS
EISSN	2304-6732
卷号	9 期号:4
发表状态	已发表
DOI	10.3390/photonics9040224
摘要	Plasmonic sensors have attracted intensive attention due to their high sensitivity. However, due to intrinsic metallic loss, plasmonic sensors usually have a large full width at half maximum (FWHM) that limits the wavelength resolution. In this paper, we numerically investigate and propose a dielectric grating-assisted plasmonic device, leveraging the bound states in the continuum (BIC) effect to suppress the FWHM of the resonance. We initiate quasi-SP-BIC modes at 1559 nm and 1905 nm wavelengths by slightly tilting the incident angle at 2 degrees to break the symmetry, featuring a narrow linewidth of 1.8 nm and 0.18 nm at these two wavelengths, respectively. Refractive index sensing has also been investigated, showing high sensitivity of 938 nm/RIU and figure of merit (FOM) of 521/RIU at 1559 nm and even higher sensitivity of 1264 nm/RIU and FOM of 7022/RIU at 1905 nm.
关键词	bound states in the continuum plasmonic sensor
URL	查看原文
收录类别	SCI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[61705099] ; Natural Science Foundation of Shanghai[21ZR1443100]
WOS研究方向	Optics
WOS类目	Optics
WOS记录号	WOS:000785021800001
出版者	MDPI
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/176040
专题	信息科学与技术学院_PI研究组_邹毅组
通讯作者	Zou, Yi
作者单位	1.Shanghai Tech Univ, Sch Informat Sci & Technol, Shanghai 201210, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Shanghai Engn Res Ctr Energy Efficient & Custom A, Shanghai 201210, Peoples R China
第一作者单位	信息科学与技术学院
通讯作者单位	信息科学与技术学院
第一作者的第一单位	信息科学与技术学院
推荐引用方式 GB/T 7714	Tang, Shulin,Chang, Chang,Zhou, Peiji,et al. Numerical Study on a Bound State in the Continuum Assisted Plasmonic Refractive Index Sensor[J]. PHOTONICS,2022,9(4).
APA	Tang, Shulin,Chang, Chang,Zhou, Peiji,&Zou, Yi.(2022).Numerical Study on a Bound State in the Continuum Assisted Plasmonic Refractive Index Sensor.PHOTONICS,9(4).
MLA	Tang, Shulin,et al."Numerical Study on a Bound State in the Continuum Assisted Plasmonic Refractive Index Sensor".PHOTONICS 9.4(2022).