All-Optical Multifunctional Logic Gates for Image Information Using Photorefractive Two-Wave Mixing
Abstract
In this paper, we propose all-optical multifunctional logic gates for image information using photorefractive (PR) two-wave mixing. The optical setup is simply configured compared with the other all-optical logic gates for image information. The XOR-, OR-, and AND-operation are all-optically performed in the same optical setup through the transitional response of the PR medium. One can switch these logic operations simply by means of the on-off control of the signal and the pump beam illumination. We analyze the spatial distribution of beam intensity in these logic gates using a finite-difference beam propagation method (FD-BPM) and the crosstalk between adjoining pixels is examined from the result. We also experimentally verify that the XOR-, OR-, and AND-gates are realized in the same optical setup.
- Publication:
-
Optical Review
- Pub Date:
- July 2007
- DOI:
- 10.1007/s10043-007-0246-3
- Bibcode:
- 2007OptRv..14..246I
- Keywords:
-
- optical image processing;
- all-optical logic gate;
- photorefractive effect;
- two-wave mixing;
- finite-difference beam propagation method