Chaofeng MA, Qi JIANG, Ying WU, Wei LIANG. Underwater Frequency Modulated Continuous Wave Laser Ranging Based on Blue External Cavity Diode Laser[J]. Acta Photonica Sinica, 2023, 52(6): 0614001
- Acta Photonica Sinica
- Vol. 52, Issue 6, 0614001 (2023)
Fig. 1. Schematic diagram and principle of FMCW signal analysis
Fig. 2. Blue light external cavity semiconductor laser
Fig. 3. Comparison of the optical spectrum and the interference signal of the diode laser with and without external feedback
Fig. 4. Schematic diagram of ranging system
Fig. 5. FFT spectrum comparison before and after resampling
Fig. 6. FMCW ranging results
Fig. 7. Relationship between actual distance and measured distance
Fig. 8. Distance measurement error
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