Ruimu YANG, Xiaopeng DONG. A Modified Three-wavelength Demodulation Method for Small Signals of EFPI[J]. Acta Photonica Sinica, 2023, 52(8): 0806002
- Acta Photonica Sinica
- Vol. 52, Issue 8, 0806002 (2023)
Fig. 1. Schematic diagram of MSDM demodulation system
Fig. 2. Structure of EFPI sensor head and simulation of Eq.（2）and Eq.（6）
Fig. 3. Error bound and condition number of SDM and MSDM
Fig. 4. The demodulation error of the two methods varies with cavity length，signal frequency，amplitude and error of
Fig. 5. The result difference after demodulation by SDM and MSDM for simulation signal
Fig. 6. Figure and spectrum of EFPI sensor head
Fig. 7. The difference after demodulation by SDM and MSDM for same signal
Fig. 8. Waveforms of
Fig. 9. The theoretical value of
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