Chinese Optics Letters, Volume. 23, Issue 1, 011201(2025)
Temperature sensing based on Lorentz resonance and Fano resonance excited in a thin-walled SiO2 hollow microrod resonator
Figures & Tables(10)
Fig. 1. Transmission spectra of the Lorentz resonance and the Fano resonance.
Fig. 2. (a) Image of SHMR; (b) transmission spectrum of SHMR coupled with tapered fiber; (c) Lorentz fitting of resonance peak.
Fig. 3. Experimental temperature-sensing device. VOA, variable optical attenuator; PC, polarization controller; PD, photoelectric detector; OSC, oscilloscope; AFG, arbitrary waveform generator.
Fig. 4. (a) Lorentz resonance spectrum and target resonance peak in temperature sensing; (b) Fano resonance spectrum and target resonance peak in temperature sensing.
Fig. 5. (a) Temperature-sensing characteristics of SHMR under Lorentz resonance; (b) linear fit of resonance peak wavelength versus temperature; (c) Lorentz resonance spectrum in repeatable experiments; (d) wavelengths of target resonance peaks in six repeatable experiments.
Fig. 6. (a) Temperature-sensing characteristics of SHMR under Fano resonance; (b) linear fit of resonance peak wavelength versus temperature; (c) Fano resonance spectrum in repeatable experiments; (d) wavelengths of target resonance peaks in six repeatable experiments.
Fig. 7. Temperature-sensing characteristics after further reduction of resonator wall thickness.
Table 1.
Q factors of Lorentz Resonance Peaks at Different TemperaturesView tableView in ArticleTable 1.
Q factors of Lorentz Resonance Peaks at Different TemperaturesT (°C) Q factor T (°C) Q factor 24.6 2.05 × 107 25.8 2.06 × 107 25.0 1.86 × 107 26.2 1.89 × 107 25.4 2.10 × 107 26.6 1.97 × 107
Table 2.
Q Factors of Fano Resonance Peaks at Different TemperaturesView tableView in ArticleTable 2.
Q Factors of Fano Resonance Peaks at Different TemperaturesT (°C) Q factor T (°C) Q factor 24.7 4.08 × 106 25.6 4.23 × 106 25.0 4.19 × 106 25.9 4.19 × 106 25.3 4.19 × 106 26.2 4.23 × 106
Table 3. Sensitivity Comparison of SiO2 Microresonator Temperature-Sensing Systems
View tableView in ArticleTable 3. Sensitivity Comparison of SiO2 Microresonator Temperature-Sensing Systems
Structure Q factor Sensitivity (pm/°C) Year/Ref. SiO2 microbottle 105 1.3 2019[ 18 ]SiO2 microsphere 4.1 × 104 7.38 2020[ 21 ]SiO2 microbottle 7.4 × 106 10.5 2018[ 19 ]SiO2 hollow microrod 5.5 × 107 34.3 This work
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Binbin Yang, Zhaofeng Kang, Tianci Chen, Jun Zhang, Di Tang, Lei Zhang, Keyi Wang, Yu Yang, "Temperature sensing based on Lorentz resonance and Fano resonance excited in a thin-walled SiO2 hollow microrod resonator," Chin. Opt. Lett. 23, 011201 (2025)
Paper Information
Category: Instrumentation, Measurement, and Optical Sensing
Received: Mar. 27, 2024
Accepted: Jul. 15, 2024
Published Online: Feb. 10, 2025
The Author Email: Keyi Wang (kywang@ustc.edu.cn), Yu Yang (yangyu_hfut@hfut.edu.cn)
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