HTTF的经典书FTTXConceptsandApplicationsGerdKeiserPhotonicsCommSolutions,Inc.PriortowidespreaduseoftheInternet,telecommunicationservicecustomersusedonlystandardtelephones,faxmachines,ordial-upmodemstocommunicateonaworldwidebasis.Toconnecttotheoutsideworld,theseapplicationstypicallyusedthepub