Some materials, with substantially smaller numbers of frequency channels, have been shown to function entirely at room temperature. To date, however, an ideal storage material has not been identified. Even a small investment in materials development will likely result in dramatic improvements in available material properties. At the same time spectral holographic techniques themselves continue their evolution and development. Anticipated performance levels of spectral memories are so far beyond current and other proposed technologies that eventual widespread implementation seems unavoidable.
Memory is but one application of spectral-spatial holography.
These processes are useful in communications and other applications and in many respects place looser demands on materials than the memory application does. H. Lin, T. Wang, and T. W. Mossberg, Opt. W. R. Babbitt and T. W. Mossberg, J. Opt. T. W. Mossberg, Opt. X. A. Shen and R. Kachru, Opt.