Reliability issues for optical fibre technology in nuclear applications

The deployment of optical fibre networks for communication and monitoring in nuclear environments, including nuclear power plants, future thermonuclear power reactor buildings and even spacecrafts is a very particular issue. A major reliability problem when dealing with photonics in these environments is the presence of nuclear radiation fields. It is well known that electronic or photonic components may suffer from exposure to high-energy radiation. Any resulting system malfunctions might have dramatic consequences on safety and cost and it is therefore essential to investigate the reliability of optical communication devices exposed to radiation. In this paper, we try to summarize the degradation mechanisms of state-of-the-art fibre optic components. We illustrate these findings with recent results obtained on commercially available optical fibre components.