Zhenrui Zhou, Zongjia Qiu, Kang Li, Guoqiang Zhang. Review on demodulation methods for optic fiber Fabry-Perot sensors[J]. Opto-Electronic Engineering, 2022, 49(6): 210411
- Opto-Electronic Engineering
- Vol. 49, Issue 6, 210411 (2022)
Fig. 1. The structure of the probe part of optic fiber F-P
Fig. 2. The relationship between the cavity length L of F-P and the output light intensity I
![The demodulation of orthogonal signal[10]](/Images/icon/loading.gif){kind=icon}
Fig. 3. The demodulation of orthogonal signal[10]
Fig. 4. The demodulation principle of double cavity length method[14]
Fig. 5. The demodulation principle of double wavelength method[15]
Fig. 6. The demodulation principle of PGC-DCM and PGC-Atan. (a) The demodulation principle of PGC-DCM; (b) The demodulation principle of PGC-Atan
Fig. 7. The demodulation principle of three-wavelength phase shifting demodulation[50]
Fig. 8. The demodulation principle of PMDI[53]
Fig. 9. The demodulation principle of non-scanning correlation deomdulation[58]
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Table 1. The characteristics of I after modulation
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Table 2. The influence of the key parameters and light source on the demodulation result of PGC
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Table 3. Comparison of various demodulation
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Table 4. Selection and comparison of demodulation method for F-P sensor from some researchers in different application scenarios
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Table 5. Comparison of the advantages and disadvantages of reuse technologies
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