Optical Fiber Communications 4th Edition by Gerd Keiser

Edition 4ISBN: 978-0073380711

Optical Fiber Communications 4th Edition by Gerd Keiser

Edition 4ISBN: 978-0073380711

Exercise 7

Consider a sinusoidally modulated optical signal P ( t ) of frequency , modulation index m , and average power P₀given by
P ( t ) = P₀(l + m cos t ) 2
Show that when this optical signal falls on a photodetector, the mean-square signal current

Consider a sinusoidally modulated optical signal P ( t ) of frequency , modulation index m , and average power P<sub>0</sub>given by P ( t ) = P<sub>0</sub>(l + m cos t ) 2 Show that when this optical signal falls on a photodetector, the mean-square signal current generated consists of a dc (average) component I p and a signal current i p given by where the responsivity is given by Eq. (6.6).

generated consists of a dc (average) component I p and a signal current i p given by

where the responsivity is given by Eq. (6.6).

Explanation

Verified