Under CopyrightHöffgen, StefanStefanHöffgenKuhnhenn, JochenJochenKuhnhenn2022-03-1315.2.20172016https://publica.fraunhofer.de/handle/publica/39499910.24406/publica-fhg-394999The talk will give a general introduction on testing optical materials for use in radiation environments. A special emphasis is given to thin optical coatings, optical fibers, and fiber Bragg gratings. Here the test procedures are much more challenging than for bulk materials. The challenges are, amongst others, conflicting standards, often online tests and the necessity to use several different radiation sources. The talk will give an overview of test standards, especially concerning optical fibers, and a discussion of the influence of parameters such as dose rate, temperature etc.enopticalradiation test620presentation