Jiayi Xie, Guoshuai Su, Mingyu Li, JianJun He. Temperature Sensor Cascading Reflective Fabry-Perot Cavity with Microring Resonator[J]. Acta Optica Sinica, 2022, 42(23): 2328002
- Acta Optica Sinica
- Vol. 42, Issue 23, 2328002 (2022)
Fig. 1. Schematic diagram of intensity interrogation device based on temperature sensor
Fig. 2. Principle of intensity interrogation method based on temperature sensor. (a) Input spectrum of BLS and transmission spectrum at ΔT=0; (b) output spectrum of temperature sensor at ΔT=0; (c) input spectrum of BLS and transmission spectrum at ΔT>0; (d) output spectrum of temperature sensor at ΔT>0
Fig. 3. Relationship between output power ratio of intensity interrogation method and temperature change
Fig. 4. Output power ratio varying with temperature under different differences between FP etalon free spectral range and MRR free spectral range
Fig. 5. Experimental setup for temperature sensor and optical microscope diagram of MRR. (a) Experimental setup for temperature sensor; (b) main part of experimental setup for temperature sensor; (c) optical microscope diagram of MRR
Fig. 6. Transmission spectrum of temperature sensor and spectrum of combined light source
Fig. 7. Data points of intensity interrogation and fitting curve
Fig. 8. P2/P1 value varying with time at temperature of 26 ℃
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Table 1. Values and variances of P2/P1 detected in three experiments
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Table 2. P2/P1 values detected in five experiments at temperature of 20 ℃
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