Acta Optica Sinica, Volume. 41, Issue 15, 1511002(2021)
Research on SS-OCT Vibration Measurement Method Based on Ultra-Small GRIN Fiber Probe
Figures & Tables(15)
Fig. 1. Schematic diagram of integrated SS-OCT vibration measurement system based on ultra-small GRIN fiber probe
Fig. 2. Development process of ultra-small GRIN optical fiber probe. (a) Precision fiber cutting-fusion machine; (b) micro spot quality detector; (c) probe production process; (d) packaging system and samples
Fig. 5. A=0.025 μm, f=10 Hz. (a) Time-varying curve of vibration signal and interference signal; (b) frequency spectrum
Fig. 6. Sine wave with A=1.5 μm, f=1 Hz. (a) Time-varying curve of vibration signal and interference signal; (b) frequency spectrum
Fig. 7. Sine wave with A=2.5 μm, f=5 Hz. (a) Time-varying curve of vibration signal and interference signal; (b) frequency spectrum
Fig. 8. Triangle wave with A=2.5 μm, f=5 Hz. (a) Time-varying curve of vibration signal and interference signal; (b) frequency spectrum
Fig. 9. Sine wave 1 (A=0.5 μm, f=20 Hz) + sine wave 2 (A=0.5 μm, f=40 Hz). (a) Time-varying curve of vibration signal and interference signal; (b) frequency spectrum
Fig. 10. Triangle wave 1 (A=0.5 μm, f=20 Hz) + triangle wave 2 (A=0.5 μm, f=40 Hz). (a) Time-varying curve of vibration signal and interference signal; (b) frequency spectrum
Fig. 11. Sine wave (A=0.5 μm, f=20 Hz) + triangle wave (A=0.5 μm, f=40 Hz). (a) Time-varying curve of vibration signal and interference signal; (b) frequency spectrum
Fig. 12. Sine wave (A=0.5 μm, f=20 Hz) appended to triangle wave (A=0.5 μm, f=40 Hz).(a) Time-varying curve of vibration signal and interference signal; (b) frequency spectrum
Fig. 13. Experimental diagrams of amplitude accuracy. (a) Time-varying curve of vibration signal and interference signal; (b) frequency spectrum
Table 1. Experimental data record table (A=0.025 μm, f=10 Hz)
View tableTable 1. Experimental data record table (A=0.025 μm, f=10 Hz)
Number of experiments Fitting time domain signal Fitting frequency domain signal OCT Nano-vibrator OCT Nano-vibrator P-to- P /μm R- square RMSE P-to- P /μm R- square RMSE Frequency / Hz Amplitude / μm Frequency / Hz Amplitude / μm 1 0.044 0.9872 0.0018 0.049 0.9993 0.0005 9.766 0.022 9.766 0.024 2 0.043 0.9814 0.0021 0.049 0.9992 0.0005 9.766 0.021 9.766 0.024 3 0.045 0.9824 0.0021 0.049 0.9993 0.0005 9.766 0.023 9.766 0.025 4 0.049 0.8035 0.0086 0.049 0.9993 0.0005 9.766 0.024 9.766 0.024 5 0.052 0.8862 0.0065 0.049 0.9993 0.0005 9.766 0.026 9.766 0.024 6 0.048 0.9780 0.0025 0.049 0.9993 0.0005 9.766 0.024 9.766 0.024 7 0.044 0.9786 0.0023 0.049 0.9993 0.0005 9.766 0.022 9.766 0.025 8 0.051 0.9698 0.0032 0.049 0.9993 0.0005 9.766 0.025 9.766 0.024 Average value 0.047 0.049 9.766 0.023 9.766 0.024
Table 2. Experimental data record table (A=0.010 μm, f=200 Hz)
View tableTable 2. Experimental data record table (A=0.010 μm, f=200 Hz)
Number of experiments Fitting time domain signal Fitting frequency domain signal OCT Nano-vibrator OCT Nano-vibrator P-to-P /μm P-to-P /μm Frequency /Hz Frequency /Hz 1 0.005 0.006 200.2 200.2 2 0.005 0.006 200.2 200.2 3 0.005 0.006 200.2 200.2 4 0.005 0.006 200.2 200.2 5 0.005 0.006 200.2 200.2 6 0.005 0.006 200.2 200.2 7 0.005 0.006 200.2 200.2 8 0.004 0.006 200.2 200.2 Average value 0.005 0.006 200.2 200.2
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Chi Wang, Zhuli Wen, Jianmei Sun, Chenye Yang, Jinhui Li, Dong Fang, Xinqun Luan, Yewen Xu. Research on SS-OCT Vibration Measurement Method Based on Ultra-Small GRIN Fiber Probe[J]. Acta Optica Sinica, 2021, 41(15): 1511002
Paper Information
Category: Imaging Systems
Received: Jan. 5, 2021
Accepted: Mar. 8, 2021
Published Online: Aug. 31, 2021
The Author Email: Xu Yewen (stnsdl@126.com)
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