All optical method of developing OR and NAND logic system based on nonlinear optical fiber couplers |
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Authors: | Prasanta Mandal Swati Midda |
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Institution: | a Department of Physics & Technophysics, Vidyasagar University, Midnapur 721102, West Bengal, India b Department of Physics, S. A. Jaipuria College, Kolkata 700005, West Bengal, India |
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Abstract: | Logic gates are the fundamental building blocks in any digital data processing system. Several all optical logic operations are already proposed by scientists and technologists. Here the authors proposed a new method of all optical logic operation based on nonlinear directional coupler. Effective optical switching is achieved by modifying the coupling length between the coupler waveguides by means of an optical signal. |
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Keywords: | Directional coupler All-optical switch Nonlinear material |
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