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Volume 21
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10.3390/s21020641
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Communication

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

by
Long Ma
1,
Guo Xia
2,3,4,*,
Shiqun Jin
2,3,4,
Lihao Bai
1,
Jiangtao Wang
1,
Qiaoqin Chen
1 and
Xiaobo Cai
1
1
School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
2
Academy of Opto-Electric Technology, Hefei University of Technology, Hefei 230009, China
3
Special Display and Imaging Technology Innovation Center of Anhui Province, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
4
National Engineering Laboratory of Special Display Technology, School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
*
Author to whom correspondence should be addressed.
Sensors 2021, 21(2), 641; https://doi.org/10.3390/s21020641
Submission received: 23 December 2020 / Revised: 10 January 2021 / Accepted: 14 January 2021 / Published: 18 January 2021
(This article belongs to the Special Issue Advanced Optoelectronic Sensors and Biomedical Application)
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Abstract

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.
Keywords: sensor; refractive index resolution; surface plasmon resonance; spectral signal-to-noise ratio sensor; refractive index resolution; surface plasmon resonance; spectral signal-to-noise ratio

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MDPI and ACS Style

Ma, L.; Xia, G.; Jin, S.; Bai, L.; Wang, J.; Chen, Q.; Cai, X. Effect of Spectral Signal-to-Noise Ratio on Resolution Enhancement at Surface Plasmon Resonance. Sensors 2021, 21, 641. https://doi.org/10.3390/s21020641

AMA Style

Ma L, Xia G, Jin S, Bai L, Wang J, Chen Q, Cai X. Effect of Spectral Signal-to-Noise Ratio on Resolution Enhancement at Surface Plasmon Resonance. Sensors. 2021; 21(2):641. https://doi.org/10.3390/s21020641

Chicago/Turabian Style

Ma, Long, Guo Xia, Shiqun Jin, Lihao Bai, Jiangtao Wang, Qiaoqin Chen, and Xiaobo Cai. 2021. "Effect of Spectral Signal-to-Noise Ratio on Resolution Enhancement at Surface Plasmon Resonance" Sensors 21, no. 2: 641. https://doi.org/10.3390/s21020641

APA Style

Ma, L., Xia, G., Jin, S., Bai, L., Wang, J., Chen, Q., & Cai, X. (2021). Effect of Spectral Signal-to-Noise Ratio on Resolution Enhancement at Surface Plasmon Resonance. Sensors, 21(2), 641. https://doi.org/10.3390/s21020641

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