APD Gain Optimizer

Find the optimal APD multiplication factor that maximizes SNR for a given receiver configuration.

APD Parameters
Optimal APD Configuration
Optimal gain (M_opt)
12
Excess noise factor F(M_opt)
2.118
Signal current at M_opt
6.0µA
SNR Comparison
APD SNR at M_opt
38.327dB
PIN SNR (M=1)
27.788dB
APD improvement
+10.539dB
Abridged Optics — APD Gain Optimizer v1.0F(M) = kM + (1−k)(2−1/M). Scans M = 1–500 to find SNR maximum.

All information, equations, and calculations have been compiled and verified to the best of our ability. For mission-critical applications, we recommend independent verification of all values. If you find an error, please let us know.