Chen Weimin, Lei Xiaohua, Zhang Wei, Liu Xianming, Liao Changrong. Recent Progress of Optical Fiber Fabry-Perot Sensors[J]. Acta Optica Sinica, 2018, 38(3): 328010
- Acta Optica Sinica
- Vol. 38, Issue 3, 328010 (2018)
Fig. 1. (a) Optical fiber F-P sensing system; (b) optical fiber F-P sensor
Fig. 2. Statistics of optical fiber F-P sensor articles indexed by SCI, EI, and CNKI. (a) Number of the articles in recent years; (b) district statistics of the first author
Fig. 3. New method of processing the intrinsic optical fiber F-P cavity. (a) Femtosecond laser irradiation on the side; (b) hollow fiber
Fig. 4. Extrinsic F-P cavity based on microstructure processing technology. (a) Silicon substrate; (b) borosilicate glass and SiO2 diaphragm; (c) SU-8 photoresist
Fig. 5. Micro fabrication of F-P cavity on fiber end face. (a) Treated with femtosecond laser; (b) treated with chemical etch; (c) graphene diaphragm
Fig. 6. Micro-machining of F-P cavity on fiber side face. (a) Femtosecond laser processing; (b) grinding processing
Fig. 7. Fabrication of fiber bubble F-P cavity on hollow fiber. (a) Discharge treatment; (b) formation of bubble
Fig. 8. Fabrication of fiber bubble F-P cavity with oil immersed fiber
Fig. 9. Ideal interference output spectrum of F-P cavity
Fig. 10. Demodulation outputs of interference signal. (a) Fourier transform spectrogram; (b) discrete cavity length conversionresults; (c) correlation demodulation results
Fig. 11. Influence of actual spectrum source on (a) F-P cavity output spectrum, (b) Fourier transform results, and (c) correlation demodulation results
Fig. 12. Principle of demodulation for parallel multiplex F-P cavities. (a) Parallel multiplex of twin F-P cavities; (b) interferometric output signals; (c) Fourier transform spectrum
Fig. 13. Principle of demodulation for series multiplex F-P cavities. (a) Series multiplex of twin F-P cavities; (b) interferometric output signals; (c) Fourier transform spectrum; (d) envelopes of interferometric output signals
Fig. 14. Demodulation system with (a) a spectrometer as a spectral receiver and (b) a high fineness tunable filter as a spectral receiver
Fig. 15. Demodulation system with a swept frequency light source
Fig. 16. Schematic of scanning correlation demodulation system
Fig. 17. Non-scanning correlation demodulation system. (a) System principle diagram; (b) interference fringe of optical wedge; (c) output signal
Fig. 18. Improved correlation demodulation system. (a) Birefringence wedge and polarization detection; (b) inclined incidence and reflection
Fig. 19. Demodulating system for phase modulation. (a) Phase generation carrier; (b) heterodyne; (c) signal processing
Fig. 20. Fiber F-P sensing system for aircraft. (a) Micro fiber F-P pressure sensor; (b) multi-channels fiber F-P demodulation system
Fig. 21. Fiber F-P strain sensor system and its application. (a) Embedded fiber F-P strain sensor for concrete; (b) fiber F-P strain demodulator; (c) its application to structural health monitoring system for long-span bridges
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