Poisson Process: Signal-to-Noise Ratio of a Photodetector

This lecture covers the application of Poisson processes to the signal-to-noise ratio of a photodetector, focusing on binary transmission in baseband and optical channels, the impact of white Gaussian noise, and the conversion of optical signals to electrical currents. The instructor explains the emission power, energy of photons, and the operation of a PIN photodiode. The lecture also delves into the generation of current by incident photons, dark current, and the efficiency of the photodiode. Additionally, it discusses the intensity of the Poisson process, the concept of signal-to-noise ratio, and the calculation of signal-to-noise ratio under dark current conditions.