摘要
提出了一种基于石墨烯的中红外波段表面等离激元带阻滤波器结构。该结构由单层石墨烯周期性排列组成。数值仿真结果表明,石墨烯纳米带化学势的轻微改变会导致谐振波长的移动。此结构在中红外光谱范围内的敏感度达1100nm/RIU,品质因数高达138,可用作高灵敏度的折射率传感器。
A graphene-based band-stop filter structure for the surface plasmonic polariton in the mid-infrared wave band is proposed, which consists of a periodic array of single-layered graphene. The numerical simulation results show that the slight variation of the chemical potential of the graphene nanoribbon results in the shift of resonance wavelength. This structure possesses a sensitivity of 1100 nm/RIU and a figure of merit of 138 in the mid-infrared spectrum range, which can be used as a highly sensitive refractive index sensor.
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第1期368-372,共5页
Laser & Optoelectronics Progress
基金
福建省杰出青年科学基金(2015J06015)
华侨大学中青年教师科技研究促进计划(ZQN-YX203)
关键词
表面光学
表面等离激元
石墨烯
带阻滤波器
折射率传感器
有限元方法
optics at surfaces
surface plasmonic polariton
graphene
band-stop filter
refractive index sensor
finite element method
