Optical Fiber Communications 4th Edition by Gerd Keiser

Exercise 19

A laser diode has a maximum average output of 1 mW (0 dBm). The laser is to be amplitude- modulated with a signal x ( t ) that has a dc component of 0.2 and a periodic component of ± 2.56. If the current-input to opticaloutput relationship is P ( t ) = i ( t )/10, find the values of I 0 and m if the modulating current is i ( t ) = I 0 [1 + mx ( t )].