Please answer the following question : Maxis Sdn Bhd requested a team of engineer to calculate the dependence of the bit error ratio $($probability of error$)$ on the received optical power for $10$G$($b$)/($s$)$ receivers that use a pin photodiode and then an APD for an optical communication system. For each case, use an appropriate range of values for the received optical power such that $10^(-10)<=$BER$<=10^(-2).$ Use suitable values of the APD gain; explain your choice. Assume a high extinction ratio $($S$\_($d$0)=0$A$).$ Discuss your results in terms of the implications on link optical communication design