Peigang YANG, Hongzhi JIA, Kunyue FU, Guanglin LI, Wei WANG, Lihua LEI, Tao JIN. Study on all-fiber sinusoidal phase modulation interferometer for displacement measurement[J]. Optical Instruments, 2023, 45(4): 1
- Optical Instruments
- Vol. 45, Issue 4, 1 (2023)
Fig. 1. Schematic of the all-fiber sinusoidal phase modulation interferometer
Fig. 2. Displacement measurement simulation
Fig. 3. Kalman filter corrects simulation results
Fig. 4. Phase error introduced by parasitic noise
Fig. 5. Kalman filter corrects simulation results
Fig. 6. Structure of fiber optic interference system
Fig. 7. Comparison of linear measurement range before and after phase modulation
Fig. 8. Experiment result of displacement measurement
Fig. 9. Experimental results of working distance and measurement range
Fig. 10. Repeatability experiment
Fig. 11. Step displacement experiment
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