Chizindikiro cha Optical chimasinthidwa kukhala chizindikiro chamakono polowetsa kuwala kwa fiber.Module ya Si PIN ili ndi pre-amplification circuit yomwe imathandizira kuti siginecha yofooka yapano ikwezedwe ndikusintha kukhala siginecha yamagetsi kuti ikwaniritse njira yosinthira ya photon-photoelectric-signal amplification.