Refractive index sensing characteristics in a D-shaped photonic quasi-crystal fiber sensor based on surface plasmon resonance

被引：102
作者：
Li, Chenguang
Yan, Bei
Liu, Jianjun [1 ]
机构：
[1] Hunan Univ, Sch Phys & Elect, Minist Educ, Key Lab Micro Nano Optoelect Devices, Changsha 410082, Hunan, Peoples R China
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2019年 / 36卷 / 10期
基金：
中国国家自然科学基金;
关键词：
GUIDING CHARACTERISTICS; DEPENDENCE; BIREFRINGENT; DISPERSION; BIOSENSOR;
D O I：
10.1364/JOSAA.36.001663
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A D-shaped photonic quasi-crystal fiber (PQF) sensor based on surface plasmon resonance is proposed for refractive index (RI) sensing. The influences of the width of the gold film, the diameter of the air holes, and the thickness of the gold film on the sensing performance are analyzed. When the RI of a liquid analyte gradually increases from 1.415 to 1.427, the average sensitivity is calculated as 10,250 nm/RIU, and the maximum sensitivity is up to 34,000 nm/RIU, which realizes the high-sensitivity sensing in the near-infrared band. The D-shaped PQF sensor proposed has great application potential in the detection of biochemical analytes and provides a new way to improve the sensing performance. (C) 2019 Optical Society of America
引用
收藏
页码：1663 / 1668
页数：6
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