Proposal for simultaneous all-optical AND, NOR, and XNOR logic gates using QPM cascading nonlinear effects in two PPLNs

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（6）
• 页码范围: 66-69
• 页数: 4页
• 语种: 英文
• DOI: 10.3788/COL201311.061901

摘要

We propose AND,NOR,and XNOR logic gates realized simultaneously for 40-Gb/s networks,in which the realization of NOR and XNOR logic gates using only MgO-doped periodically poled lithium niobate (MgO:PPLN) is reported.In our configuration,we exploit broadband quasi-phase matching (QPM) cascaded second harmonic and difference-frequency generation (cSHG/DFG),cascaded sum-frequency and differencefrequency generation (cSFG/DFG) in one MgO:PPLN,and the narrow band QPM sum-frequency generation (SFG) in another MgO:PPLN.The performance,including the quality-factor (Q-factor) and extinction ratio (ER),of the proposed multifunctional logic device is also simulated.