Radiation hardness evaluation of an analogue optical link for operation at cryogenic temperatures

The effect of neutron radiation on light emitters and optical fibres at cryogenic temperatures (-184/spl deg/C) has been investigated as part of the development of an analogue optical link, intended for use at future high energy physics experiments. The LED's were also exposed to a gamma radiation dose of 3 MRad. High radiance GaAs LED's, quantum-well LED's, quantum-well laser diodes and optical fibres have been exposed to neutron radiation reaching fluences of 10/sup 15/ neutrons/cm/sup 2/.