Holographic scrubbing technique for a programmable gate array

Recently, field programmable gate arrays (FPGAs), which have become widely used for embedded systems, have also become anticipated for use in high-radiation environments such as space environments and nuclear power plants. Currently available radiation-hardened FPGAs can support scrubbing techniques, but such techniques entail the difficulty that radiation tolerance is insufficient for high-radiation environments. This paper therefore presents a holographic scrubbing technique for a programmable gate array. The scrubbing period can be less than 10 ns, so the robust ability of programmable gate arrays can be increased drastically. This paper presents theoretical analysis results and a demonstration of high-speed scrubbing on an optically reconfigurable gate array.