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)
- Chinese Optics Letters
- Vol. 23, Issue 1, 011201 (2025)
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.
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Table 1. Q factors of Lorentz Resonance Peaks at Different Temperatures
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Table 2. Q Factors of Fano Resonance Peaks at Different Temperatures
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Table 3. Sensitivity Comparison of SiO2 Microresonator Temperature-Sensing Systems
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