Today, along with the wider use of high-speed information networks and multimedia, it is increasingly necessary to
have higher-density and higher-transfer-rate storage devices. Therefore, research and development into holographic
memories with three-dimensional storage areas is being carried out to realize next-generation large-capacity memories.
However, in holographic memories, interference between bits, which affect the detection characteristics, occurs as a
result of aberrations such as the deviation of a wavefront in an optical system. In this study, we pay particular attention to
the nonlinear factors that cause bit errors, where filters with a Volterra equalizer and the morphologies are investigated
as a means of signal processing.