Optical Fiber Temperature Sensor Based on Surface Plasmon Resonance

Yong Wei; Jiangxi Hu; Zongda Zhu; Lu Liu; Feng Peng

doi:10.3788/CJL201845.1110003

Chinese Journal of Lasers, Volume. 45, Issue 11, 1110003(2018)

Optical Fiber Temperature Sensor Based on Surface Plasmon Resonance

Yong Wei^1、*, Jiangxi Hu¹, Zongda Zhu², Lu Liu³, and Feng Peng^4、*

¹ Chongqing Municipal Key Laboratory of Intelligent Information Processing and Control of Institutions of Higher Education, Chongqing Three Gorges University, Chongqing 404100, China

² School of Aeronautics, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China

³ School of Science, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China

⁴ School of Physics and Technology, University of Jinan, Jinan, Shandong 250022, China

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Figures & Tables(9)

Fig. 1. Structural diagram of temperature sensing probe

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Fig. 2. SPR transmission spectra under different conditions. (a) Different fiber polishing angles; (b) different gold film thicknesses

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Fig. 3. Simulation results of resonance wavelength versus temperature (Inset: transmission spectra under different temperatures)

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Fig. 4. Test system of temperature sensing

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Fig. 5. Experimental results of resonance wavelength versus temperature (Inset: transmission spectra under different temperatures)

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Fig. 6. FWHM of SPR dip and figure of merit versus temperature

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Table 1. Physical parameters of gold film
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Table 1. Physical parameters of gold film
Parameter Value
ω_p0 /(rad·s^-1) 1.3754×10¹⁶
γ_e /(℃^-1) 1.42×10^-5
T_D /(℃) -103
E_F /(eV) 5.53
ω₀ /(rad·s^-1) 2.0477×10¹³
Γ 0.55
Δ 0.77

Table 2. Stability test and error analysis

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Table 2. Stability test and error analysis

Actual temperature /℃	20	30	40	50	60	70
Average of resonance wavelength /nm	922.49	877.36	851.89	810.86	790.53	764.38
Standard deviation of resonance wavelength /nm	0.26	0.24	0.33	0.23	0.29	0.30
Average of calculated temperature /℃	19.8	31.4	38.7	51.9	59.6	71.2
Standard deviation of calculated temperature /℃	0.06	0.07	0.10	0.08	0.12	0.14
Temperature error /℃	-0.2	1.4	-1.3	1.9	-0.4	1.2

Table 3. Sensitivity comparison among different types of optical fiber temperature sensors
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Table 3. Sensitivity comparison among different types of optical fiber temperature sensors
Types Sensitivity /(nm·℃^-1) Detection range /℃
FBG^[1] 0.042 30~120
LPFG^[3] 0.77 20~100
OFI^[6] 0.115 30~400
WGM^[7] 0.377 25~45
SPR^[13] 2.60 20~60
Proposed 4.15 20~70

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Yong Wei, Jiangxi Hu, Zongda Zhu, Lu Liu, Feng Peng. Optical Fiber Temperature Sensor Based on Surface Plasmon Resonance[J]. Chinese Journal of Lasers, 2018, 45(11): 1110003

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