Displacement Damage and Total Ionizing Dose at High and Low Dose Rate Performance of an Optocoupler

Displacement damage dose and total ionizing dose performance of an optocoupler were studied by using 105 MeV protons and ${}^{60}\mathrm{Co}$ irradiation. The results show degradation due to displacement damage dose is more significant than ionizing dose. Ionizing dose degradation is shown to not depend on dose rate. The optocoupler's performance in the space radiation environment is discussed.