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Simulation of Nanoscale Multifunctional Interferometric Logic Gates Based on Coupled Metal Gap Waveguides

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8 Author(s)
Zongqiang Chen ; MOE Key Lab. of Weak Light Nonlinear Photonics, Nankai Univ., Tianjin, China ; Jing Chen ; Yudong Li ; Deng Pan
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A novel design of ultrasmall multifunctional Boolean logic gates is proposed in this letter. This interferometric logic device is based on the coupled metal waveguides. This structure is a theoretical analysis, and logic performances are proved by using the finite-difference time-domain method. The single device can perform individually four different kinds of basic functions: and, or, xor, and not operations. The device with an extremely small feature size is an attractive candidate for high density nano-photonic integrated circuits.

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Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 16 )