Changsha Municipal Natural Science Foundation [kq2202295]; Scientific Research Fund of Hunan Provincial Education Department [22B0273]; Education Department Key Program of Hunan Province [21A0160]
机构署名：
本校为第一且通讯机构
院系归属：
计算机与信息工程学院
理学院
摘要：
In this paper, an ultra-high sensitive plasmonic sensor is theoretically proposed for refractive index based on D-shaped photonic crystal fiber (PCF) with graphene-coated Ag-grating in mid-infrared region. Surface plasmon polariton at the metal/dielectric interface can be effectively excited by the fundamental guiding mode, leading to the surrounding medium-dependent loss spectrum. This metallic-grating PCF sensor exhibits a maximum sensitivity of 18612 nm/RIU with a detection resolution of 4.16 x 10-6 RIU in the index range from 1.33 to 1.395. Dependences of loss spectrum on the PCF parameter...
