Isiginali ye-Optical iguqulwa ibe isignali yamanje ngokufaka i-fiber optical.Imojula ye-Si PIN inesekhethi yokukhulisa amandla ngaphambili eyenza isignali yamanje ebuthakathaka ikhuliswe futhi iguqulelwe kusignali kagesi ukuze kuzuzwe inqubo yokuguqulwa yokukhulisa isignali ye-photon-photoelectric-signal.