Boughrara, BouchraHamouda, AmarGoumidane, FaycalKebaili, AmirMessaoudi, Roumaissa2025-04-172025-04-172021http://dspace.univ-oeb.dz:4000/handle/123456789/21885The aim of this work is to study and precisely adjust the values of the parameters of the components used at the level of the transmitter, receiver and physical support modules of the digital transmission (optical fiber) using the OPTISYSTEM 7 simulator, in order to improve the quality and the binary error rate of the transmitted signal and subsequently the development of the performance of the transmission chain at a distance of 70 Km.enParameters, Components, Digital transmission, Quality, PerformanceArticle