Title :
Simulation of Nanoscale Multifunctional Interferometric Logic Gates Based on Coupled Metal Gap Waveguides
Author :
Chen, Zongqiang ; Chen, Jing ; Li, Yudong ; Pan, Deng ; Lu, Wenqiang ; Hao, Zhiqiang ; Xu, Jingjun ; Sun, Qian
Author_Institution :
MOE Key Lab. of Weak Light Nonlinear Photonics, Nankai Univ., Tianjin, China
Abstract :
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.
Keywords :
finite difference time-domain analysis; light interferometry; optical couplers; optical logic; optical waveguides; and operations; coupled metal gap waveguides; finite-difference time-domain method; interferometric logic device; nanoscale multifunctional interferometric logic gates; not operations; ultrasmall multifunctional Boolean logic gates; xor operations; Couplings; Logic gates; Metals; Optical interferometry; Optical surface waves; Optical waveguides; Plasmons; Finite-difference time-domain (FDTD) methods; multifunctional integrated device; optical logic devices; surface plasmon polaritons (SPPs);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2202283
