(c) An APD has the same quantum efficiency as the pn diode in (b) of 50% at 900nm. When illuminated with radiation of th
Posted: Fri May 06, 2022 6:36 am
(c) An APD has the same quantum efficiency as the pn diode in (b) of 50% at 900nm. When illuminated with radiation of this wavelength it produces an output photocurrent of 10 µA after avalanche gain with a multiplication factor of 250. (i) Calculate the received optical power to the device. (ii) How many photons per second does this correspond to? [8 marks]