Assessment of radiation-induced loss for AT&T fiber-optic transmission systems in the terrestrial environment

摘要

Environmental radiation dose rate estimates are provided for both outdoor terrestrial and indoor environments. Laboratory radiation sensitivity measurements are reported for the AT&T standard single-mode fiber and standard and radiation-hardened multimode fibers. These are used to estimate typical system losses for long-haul, trunk, feeder, local area network, and optical data environments. It is reported that radiation-induced loss is unusually harsh environments can be minimized by using the radiation hardened 62.5/125- mu m multimode fiber, which has sensitivities roughly an order of magnitude lower than the standard product at 0.85 mu m and almost two orders of magnitude lower at 1.3 mu m.