Experimental realisation of parallel optical logic gates and combinational logic using multiple beam interference

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• 作者：Ruchi Bhardwaj^a ; Saurabh Babu Saxena^a ; Parag Sharma^a ; ^b ; ^{sharmap2@nplindia.org" class="auth_mail" title="E-mail the corresponding author} ; ^{parag.physics@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; V.K. Jaiswal^a ; ^b ; Ranjana Mehrotra^a ; ^b
• 关键词：Multiple beam interference (MBI) ; Michelson interferometer ; Optical logic gates ; Optical computing
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：128
• 期：Complete
• 页码：253-263
• 全文大小：3021 K

文摘

In this paper, we report the experimental realisation of parallel optical logic gates and some combinational logic using multiple beam interference in three cascaded Michelson type interferometers. Considering light intensity at different points of 2-D interference pattern of four input laser beams as output, (i) two input AND, OR, NAND, NOR, XOR, XNOR optical logic gates in parallel, (ii) three input AND and NAND optical logic gates in parallel, and (iii) four input AND logic gate as well as some combinational logic in parallel were realised. By controlling the four input laser beams electro-optically or all-optically using nonlinear optical materials having large nonlinearity and fast response time, ultrafast photonic information processing can be performed utilizing present scheme due to parallel operation of large number of logic gates.