Xinwang Gui, Michael Anthony Galle, Li Qian, Weilong Liang, Ciming Zhou, Yiwen Ou, Dian Fan. Demodulation method combining virtual reference interferometry and minimum mean square error for fiber-optic Fabry–Perot sensors[J]. Chinese Optics Letters, 2018, 16(1): 010606
- Chinese Optics Letters
- Vol. 16, Issue 1, 010606 (2018)
Fig. 1. Fiber-optic F-P high temperature sensing experimental system based on a sapphire wafer.
Fig. 2. (Color online) Interference spectra at the temperatures of 28°C, 100°C, and 200°C, respectively.
Fig. 3. (Color online) Group delay at different temperatures.
Fig. 4. (Color online) Group delay as a function of temperature at different wavelengths.
Fig. 5. (Color online) Corresponding cavity lengths decoded by the methods of VRI, MMSE, and VRI-MMSE.
Fig. 6. Stability measurement result of the VRI-MMSE processing method.
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