Abstract
We present a general survey on phase conjugators including self-pumped phase conjugator (SPPC) and mutually pumped phase conjugator (MPPC) in photorefractive BaTiO3 crystal along with some recent results on two high-performance phase conjugators using pentagon-shaped BaTiO3 crystal. We also describe two unconventional conjugators with highly ordinary polarized and purely ordinary polarized incident beams. Finally, an application of phase conjugators in one- and two-way 2-D image transfer in optical interconnection is presented.
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