Chinese Optics Letters, Volume. 19, Issue 9, 091202(2021)
Reconstruction of Fabry–Perot cavity interferometer nanometer micro-displacement based on Hilbert transform
Figures & Tables(8)
Fig. 4. Simulation of the FPI signal and the reconstruction signal.
Fig. 6. Experimental signal and reconstruction of sine wave vibration.
Table 1. Values of the Variables in Simulations
View tableView in ArticleTable 1. Values of the Variables in Simulations
Variables Definition Values Laser initial wavelength 1550 nm L Original external cavity length between the laser and the target 0.1 m f Frequency of the vibration 5 Hz L Peak-to-peak value of the vibration 6.2 µm
Table 2. Experimental Relative Error
View tableView in ArticleTable 2. Experimental Relative Error
Frequency Error at Various Peak-to-Peak Values 1.55 µm 3.1 µm 4.65 µm 1 Hz 2.7% 2.3% 1.5% 3 Hz 2.4% 3.0% 2.2% 5 Hz 3.8% 2.8% 2.4% 7 Hz 4.9% 3.2% 2.1%
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Hongwei Liang, Yu Sun, Zhen Huang, Chunlei Jiang, Zihua Zhang, Lingling Kan, "Reconstruction of Fabry–Perot cavity interferometer nanometer micro-displacement based on Hilbert transform," Chin. Opt. Lett. 19, 091202 (2021)
Paper Information
Category: Instrumentation, Measurement, and Optical Sensing
Received: Dec. 24, 2020
Accepted: Mar. 3, 2021
Published Online: Jun. 15, 2021
The Author Email: Chunlei Jiang (jiangchunlei_nepu@163.com), Lingling Kan (kll@nepu.edu.cn)
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