Ziqi Zhang, Xiaonan Yu, Shoufeng Tong. Simulation System of Coherent Four‐Quadrant Detector Based on Monte Carlo Method[J]. Chinese Journal of Lasers, 2023, 50(13): 1306004
- Chinese Journal of Lasers
- Vol. 50, Issue 13, 1306004 (2023)
Fig. 1. Block diagram of four-quadrant detector coherent detection system
Fig. 2. Relation curve between system SNR and local oscillator power
Fig. 3. Spot position distribution of four-quadrant detector. (a) At center of photosensitive surface; (b) deviating from center of photosensitive surface
Fig. 4. Overall block diagram of simulation system algorithm model
Fig. 5. Error evaluation process. (a) Error in x axis; (b) error in y axis
Fig. 6. Influence of beat signal noise on position detection accuracy. (a) Incoherent; (b) coherent
Fig. 7. Influence of detector noise on position detection accuracy. (a) Incoherent; (b) coherent
Fig. 8. Influence of Gaussian spot radius on position detection accuracy. (a) Incoherent; (b) coherent
Fig. 9. I Influence of spot center position on position detection accuracy. (a) Incoherent; (b) coherent
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