scholarly journals Effect of Spectral Signal-to-Noise Ratio on Resolution Enhancement at Surface Plasmon Resonance

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 641
Author(s):  
Long Ma ◽  
Guo Xia ◽  
Shiqun Jin ◽  
Lihao Bai ◽  
Jiangtao Wang ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Signal To Noise Ratio ◽  
Resonance Wavelength ◽  
Surface Plasmon Resonance Sensor ◽  
Signal To Noise ◽  
Spectral Signal ◽  
Resonance Sensor ◽  
Noise Ratio

Refractive index resolution is an important indicator for a wavelength interrogation surface plasmon resonance sensor, which can be affected by signal-to-noise ratio. This paper investigates the impact of spectral signal-to-noise ratio on a surface plasmon resonance sensor. The effects of different spectral powers and noises are compared and verified through simulation and experiments. The results indicate that the optimal resonance wavelength is changed and the refractive index resolution can even be nearly twice as good when the spectral signal-to-noise ratio is increased. The optimal resonance wavelength can be found by changing the spectral power distribution or noise.

Performance Analysis of Localized Surface Plasmon Resonance Sensor with and Without Bragg Grating

2019 ◽  
Vol 41 (1) ◽  
pp. 45-50
Author(s):  
Ranjit Singh ◽  
Sanjeev Dewra
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Signal To Noise Ratio ◽  
Localized Surface Plasmon ◽  
Bragg Grating ◽  
Surface Plasmon Resonance Sensor ◽  
Resonance Sensor ◽  
Difference Time

Abstract The performance of localized surface plasmon resonance-based sensor with and without Bragg grating by using finite difference time domain method is evaluated with nanoparticles used at the tip of optical fiber. The proposed sensor has been analyzed in terms of refractive index (RI) sensitivity and signal-to-noise ratio (SNR). It is observed that the RI sensitivity of surface plasmon resonance sensor is 240 nm/RIU with and without grating as RI of surrounding varies from 1.4 to 1.5. It is found that the value of SNR is 0.875 RIU→1 without grating and 2.75 RIU→1 with grating. So there is an improvement in the SNR when the Bragg grating is inscribed within the core of the fiber.

Refractive Index Sensor Based on Photonic Crystal Fiber Coated with Silver Film

2014 ◽  
Vol 590 ◽  
pp. 634-638 ◽  
Author(s):  
Min Tuo Wang ◽  
Ying Lu ◽  
Cong Jing Hao ◽  
Jian Quan Yao
Keyword(s):  
Refractive Index ◽  
Surface Plasmon Resonance ◽  
Photonic Crystal ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Silver Film ◽  
Resonance Wavelength ◽  
Surface Plasmon Resonance Sensor ◽  
Crystal Fiber ◽  
Resonance Sensor

A silver film-covered photonic crystal fiber containing different sizes of air holes is proposed to construct the surface plasmon resonance sensor. In this sensor, a nanoscale metal film and analyte can be deposited on the outer side of the fiber instead of coating or filling in the holes of the conventional PCF, which make the real time detection with high sensitivity easily to realize. Moreover, it is relatively stable to the changes of the diameter of air holes, which is very beneficial for sensor fabrication and sensing applications. The finite element method is used to analyze the characteristics of the surface plasmon resonance sensor. And the numerical results show that the resonance wavelength is sensitive to the refractive index of liquid, while the resonance wavelength doesn’t change basically when the diameter of air holes vary.

Dual-mode surface plasmon resonance sensor chip using a grating 3D-printed prism

2021 ◽  
Vol 1147 ◽  
pp. 23-29
Author(s):  
Chutiparn Lertvachirapaiboon ◽  
Akira Baba ◽  
Kazunari Shinbo ◽  
Keizo Kato
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Sensor Chip ◽  
Surface Plasmon Resonance Sensor ◽  
Dual Mode ◽  
Resonance Sensor ◽  
3D Printed
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