This paper examines optical fiber radiation damage mechanisms, encompassing ionization damage, displacement damage, and defect centers. This study proposes an anomaly-detection framework for monitoring exposure-length variations in submarine free-span cables using Distributed Acoustic Sensing (DAS), which is one of the distributed fiber-optic sensing technologies. To address environmental variability and limited training data in. Optical fiber cables deployed within nuclear power plants and other high radiation environments such as space environments, high energy physics environments, and military applications must be able to maintain their functionality even with high levels of cumulative radiation exposure. During. Periodically, commercially available (commercial off the shelf, COTS) optical fiber cable assemblies are characterized for space flight usage under the NASA Electronic Parts and Packaging Program (NEPP). Ge doped PCVD 50 Micron MMF (Rad Hard). Comparative typical instantaneous attenuation values for optical fibers at a dose of 2. 0MGy (200Mrad) and a dose rate of 1. The performance benefit of SRH fibers increases with. Handling bare optical fiber generates microscopic silica fragments invisible to the naked eye. Good practices begin with recognizing the real risks. There is no risk of electrocution, no magnetic field, no radio waves. It also surveys the current research on radiation-resistant fiber optic design, including doping and manufacturing process improvements.