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