what is the probability that an incident photon will produce

what is the probability that an incident photon will produce an electron-hole pair in the depletion region of the photodetector?

Light at a wavelength of 1000 nm is incident on a receiver with a sensitivity of-23 dBm. If the minimum operating current for the receiver is 0.5 what is the probability that an incident photon will produce an electron-hole pair in the depletion region of the photodetector?

Solution

The probability that an incident photon will produce an electron-hole pair in the depletion region of the photodetector is

light at a wavelength=1000nm

sensitivity=-23dBm

current for the receiver=0.5microwats

probability=?

from the given values the probability=0.18