Theoretical Implications for Surface Plasmon Resonance Based on Microstructured Optical Fiber

Author(s):  
D. K. Sharma ◽  
S. M. Tripathi
Sensors ◽  
2020 ◽  
Vol 20 (14) ◽  
pp. 3911 ◽  
Author(s):  
Haixia Han ◽  
Donglian Hou ◽  
Nannan Luan ◽  
Zhenxu Bai ◽  
Li Song ◽  
...  

A surface plasmon resonance (SPR) sensor based on a dual-side polished microstructured optical fiber (MOF) with a dual core is proposed for a large analyte refractive index (RI; na) detection range. Gold is used as a plasmonic material coated on the polished surface, and analytes can be directly contacted with the gold film. The special structure not only facilitates the fabrication of the sensor, but also can work in the na range of 1.42–1.46 when the background material RI is 1.45, which is beyond the reach of other traditional MOF-SPR sensors. The sensing performance of the sensor was investigated by the wavelength and amplitude interrogation methods. The detailed numerical results showed that the proposed sensor can work effectively in the na range of 1.35–1.47 and exhibits higher sensitivity in the na range of 1.42–1.43.


2013 ◽  
Vol 411-414 ◽  
pp. 1573-1576 ◽  
Author(s):  
Nan Nan Luan ◽  
Jian Quan Yao ◽  
Ran Wang ◽  
Cong Jing Hao ◽  
Bao Qun Wu ◽  
...  

The surface plasmon resonance (SPR) sensor is proposed based on coating the inner surfaces of an index-guiding microstructured optical fiber (MOF) with a silver layer. Fiber core is surrounded by six large metallized holes which should facilitate the fabrication of the layered sensor structure and the infiltration of the analyte. The relationship between the sensitivity of SPR sensor and the refractive index of MOF material is demonstrated with finite element method (FEM). Numerical simulation results indicate that the sensitivity of SPR sensor decreases as the refractive index of the MOF material increasing and both spectral and intensity sensitivity are estimated to be 6.25×10-5and 6.67×10-5with low refractive index of MOF materialn=1.46.


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