Abstract:
The detector is an essential component of an optical fiber communication
system and is one of the crucial elements which dictate the overall system
performance. Shot noise and thermal noise added by avalanche
photodiode (APD) and Positive intrinsic negative photodiode (PIN)
degrade the received signal on optical communication receivers systems.
There for this affects in the overall performance of fiber optic
communication system. This thesis will evaluate the performance of
optical communication receivers systems by using optimal gain of APD
to reduce affect of shot noise and thermal noise in detected signal,
Performance of photo receivers in optical communication receivers
evaluated and simulated by using optisystem software. From simulation
results, found the PIN gives better performance than APD in existing of
shot noise, also APD gives better performance than PIN in existing of
thermal noise because it have internal gain that not achieved in PIN and
observed the maximum gain for APD is 16 to maintain best performance.
