Optical Fiber Communications 4th Edition by Gerd Keiser

Exercise 4

If an optical power level P in is incident on a photodiode, the electron-hole generation rate G ( x ) is given by
G ( x ) = 0 s exp(- s x )
Here 0 is the incident photon flux per unit area given by
Fig. 6.18 Absorption coefficients of Si as a function of wavelength
where A is the detector area, R f is the surface reflectance, and hv is the photon energy. From this, show that the primary photocurrent in the depletion region of width w is given by Eq. (6.4).