A Novel Approach to Realizing Low-Cost Plasmonic Optical Fiber Sensors: Light-Diffusing Fibers Covered by Thin Metal Films

被引：13

作者：

Cennamo, Nunzio ^{[1
]}

Zeni, Luigi ^{[1
]}

Arcadio, Francesco ^{[1
]}

Catalano, Ester ^{[1
]}

Minardo, Aldo ^{[1
]}

机构：

[1] Univ Campania L Vanvitelli, Dept Engn, Via Roma 29, I-81031 Aversa, Italy

来源：

FIBERS | 2019年 / 7卷 / 04期

关键词：

light-diffusing fibers (LDF); optical sensors; thin metal films; silver film; surface plasmon resonance (SPR); RESONANCE SENSORS; BIOSENSOR; SPR;

D O I：

10.3390/fib7040034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated, in a numerical and experimental way, a refractive index (RI) sensor based on surface plasmon resonance (SPR) in a silver-coated light-diffusing fiber (LDF). The experimental tests were conducted using water-glycerine mixtures with refractive indices ranging from 1.332 to 1.388. In the considered refractive index range, the experimental results show a sensitivity of the SPR wavelength to the outer medium's RI ranging from similar to 2600 to similar to 4700 nm/RIU, which is larger than the sensitivity recently reported for a gold-coated LDF sensor (similar to 1200 to similar to 4000 nm/RIU). The silver-coated sensor is also shown to ensure a higher signal-to-noise ratio (SNR) compared to the gold-coated sensor.

引用

页数：7