Zhen ZHANG, Changlei GUO. Low-noise Photodetection Technology for Multiband Laser-intensity-noise Suppression[J]. Acta Photonica Sinica, 2025, 54(2): 0254109
- Acta Photonica Sinica
- Vol. 54, Issue 2, 0254109 (2025)
Fig. 1. Circuit diagram of the low noise photodetector
Fig. 2. Calculation model for transfer function of the photodetector
Fig. 3. Frequency response of the photodetector
Fig. 4. Circuit model of input voltage noise of the OP AMPs
Fig. 5. Noise gain curves of input voltage noise of the OP AMPs
Fig. 6. Circuit model of input current noise of the OP AMPs
Fig. 7. Noise gain curves of input current noise of the OP AMPs
Fig. 8. Circuit model of voltage noise of resistor R1
Fig. 9. Noise gain curves of voltage noises of the resistors
Fig. 10. Calculated total output voltage noise of the photodetector
Fig. 11. Scheme for bandwidth measurement of the photodetector
Fig. 12. Bandwidth measurement results of the photodetector
Fig. 13. Experiment setup for output noise measurement of the photodetector
Fig. 14. Output noise measurement results of the photodetector
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Table 1. Device parameter list
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Table 2. Basic noise parameters of the OP AMPs
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Table 3. Basic parameters of current noise in the photodiode
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