Chunhui Luo, Xiaoxu Chen, Shun Wu. Analysis of Sensing Characteristics of Parallel Fabry-Pérot Interferometer Based on Vernier Effect[J]. Acta Optica Sinica, 2023, 43(5): 0506002
- Acta Optica Sinica
- Vol. 43, Issue 5, 0506002 (2023)
Fig. 1. Schematic diagram of gas pressure sensing device
Fig. 2. Optical vernier spectra produced by I1 and I2 superposition under different j. (a) j=1; (b) j=2; (c) j=3; (d) j=4
Fig. 3. Vernier spectra and FFT diagrams under different j in experiment. (a)(b) j=1; (c)(d) j=2; (e)(f) j=3; (g)(h) j=4
Fig. 4. Gas pressure test results for sample S1. (a) Drift diagram of internal envelope reference point corresponding to S1 under different air pressures; (b) gas pressure sensitivity corresponding to S1 (inset shows side-view microscopic pictures of sensing and reference Fabry-Pérot interferometers)
Fig. 5. Vernier spectra and their characteristics for different IA to IB ratios under constant IA.(a) IA∶IB=2.5∶1.0; (b) IA∶IB=3.5∶1.0; (c) IA∶IB=4.5∶1.0
Fig. 6. Influence of IB on envelope feature points under constant IA. (a) IA∶IB=1∶1; (b) IA∶IB=3∶1
Fig. 7. Cutting error corresponding to different reference cavity media as function of detuning ratio and sensitivity at L1=300 μm and j=1. (a) Detuning ratio; (b) sensitivity
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