Total ionizing dose and single particle effects in a 200-Mbps star-coupled fiber optic data bus

In-situ measurements of proton-induced system level errors are reported for newly designed and fabricated hardware implementing an operational 200 Mbps linear token passing fiber optic data bus. Parametric analysis of key single-particle-event and total-ionizing-dose variables affecting components is used to quantify system response and predict on-orbit performance.