Optical Fiber Communications 4th Edition by Gerd Keiser

Exercise 5

Plot the penalty factor F ( G ) givenby Eq. (11.43) as a function of amplifier gain for gains ranging from 0 to 30 dB. Assuming the fiber attenuation is 0.2 dB/km, draw a distance axis parallel to the gain axis to show the transmission distances corresponding to the gain values.