All optical method of developing OR and NAND logic system based on nonlinear optical fiber couplers

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• 作者：Prasanta Mandal^a ;   ; ^{prasanta_mandal2004@yahoo.co.in} ; Swati Midda^b ;   ; ^{swati_midda2003@yahoo.co.in}
• 关键词：Directional coupler ; All-optical switch ; Nonlinear material
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2011
• 出版时间：October 2011
• 年：2011
• 卷：122
• 期：20
• 页码：1795-1798
• 全文大小：251 K

文摘

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.