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Optically fixed photorefractive correlator |
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| Authors: | Liu You-Wen Liu Li-Ren Zhou Chang-He and Xu Liang-Ying |
| Institution: | Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Department of Physics, Yancheng Normal College, Yancheng 224002, China; Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China |
| Abstract: | An optically fixed photorefractive correlator is presented, where two-centre non-volatile holographic recording is employed to write and fix the matched filter in doubly doped LiNbO3 crystals. This correlator shows good correlation characteristics and insensitivity to the writing beam during readout. It can be used in cases requiring stability and not requiring modification for a long period, and it is refreshed optically when new information needs to be registered. |
| Keywords: | photorefractive effect two-centre non-volatile holographic recording correlator doubly doped LiNbO3 crystals |
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