Low Smoke, Zero Halogen Tight-Buffer Breakout Cables Containing Radiation Tolerant, Full-Fluorine Doped, Graded Index Multimode Optical Fibers

摘要

This study summarizes performance testing of cables containing new radiation tolerant, full-fluorine doped, Graded Index MultiMode Fibers (GIMMF). Test results according to GR-409 and ICEA-596 industry specifications, as well as enhanced cable performance testing required for deployment into high radiation environments such as nuclear power plants, are summarized. Compared to radiation optimized germanium doped optical fibers, this new fiber design reduces radiation sensitivity of the optical fibers by more than a factor of 10. In addition to the radiation response of the optical fibers, other cable characteristics must be optimized for high radiation environments such as flammability and material radiation resistance. Environmental qualification data for cable flammability performance and material reliability are also presented for lifetime radiation exposure to doses as high as 100KGy as well as thermal lifetime simulations exceeding 60 years at 50°C.