scholarly journals A theoretical study of optically enhanced transmission characteristics of subwavelength metal Y-shaped arrays and its application on refractive index sensor

2019 ◽  
Vol 15 ◽  
pp. 102495 ◽  
Author(s):  
Yunping Qi ◽  
Yue Wang ◽  
Xuewei Zhang ◽  
Chuqin Liu ◽  
Bingbing Hu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Theoretical Study ◽  
Refractive Index Sensor ◽  
Transmission Characteristics ◽  
Enhanced Transmission

scholarly journals A Tunable Plasmonic Refractive Index Sensor with Nanoring-Strip Graphene Arrays

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4489 ◽  
Author(s):  
Chunlian Cen ◽  
Hang Lin ◽  
Jing Huang ◽  
Cuiping Liang ◽  
Xifang Chen ◽  
...  
Keyword(s):  
Refractive Index ◽  
Doping Level ◽  
Transverse Electric ◽  
Resonance Wavelength ◽  
Transverse Magnetic ◽  
Refractive Index Sensor ◽  
Transmission Characteristics ◽  
Wide Range ◽  
Strip Length ◽  
Mode A

In the present study, we design a tunable plasmonic refractive index sensor with nanoring-strip graphene arrays. The calculations prove that the nanoring-strip have two transmission dips. By changing the strip length L of the present structure, we find that the nanoring-strip graphene arrays have a wide range of resonances (resonance wavelength increases from 17.73 μm to 28.15 μm). When changing the sensing medium refractive index nmed, the sensitivity of mode A and B can reach 2.97 μm/RIU and 5.20 μm/RIU. By changing the doping level ng, we notice that the transmission characteristics can be tuned flexibly. Finally, the proposed sensor also shows good angle tolerance for both transverse magnetic (TM) and transverse electric (TE) polarizations. The proposed nanoring-strip graphene arrays along with the numerical results could open a new avenue to realize various tunable plasmon devices and have a great application prospect in biosensing, detection, and imaging.

scholarly journals Refractive Index Sensor for Salty and Sugary Solution Based on Optical Fiber Technical

2021 ◽  
Vol 1879 (3) ◽  
pp. 032077
Author(s):  
Maher Khaleel Ibrahim ◽  
Shehab A Kadhim ◽  
Nabeil Ibrahim Fawaz
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Refractive Index Sensor
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