Bai Jibo, Wang Junqin, Jiang Junzhen, Chen Xiyao, Li Hui, Qiu Yishen, Qiang Zexuan
School of Physics and Optoelectronics Technology, Fujian Normal University, Fuzhou 35007, China.
Appl Opt. 2009 Dec 20;48(36):6923-7. doi: 10.1364/AO.48.006923.
New all-optical NOT and NOR logic gates based on a single ultracompact photonic crystal ring resonator (PCRR) have been proposed. The PCRR was formed by removing the line defect along the GammaM direction instead of the conventional GammaX direction in a square-pattern cylindrical silicon-rod photonic crystal structure. The behavior of the proposed logic gates is qualitatively analyzed with the theory of beam interference and then numerically investigated by use of the two-dimensional finite-difference time-domain method. No nonlinear material is required with less than a 2.2 microm effective ring radius. The wavelengths of the input signal and the probe signal are the same. This new device can potentially be used in on-chip photonic logic-integrated circuits.
基于单个超紧凑型光子晶体环形谐振器（PCRR）的新型全光非门和或非门已被提出。在方形柱状硅棒光子晶体结构中，PCRR是通过去除沿ΓM方向而非传统的ΓX方向的线缺陷形成的。利用光束干涉理论对所提出的逻辑门的行为进行了定性分析，然后采用二维时域有限差分法进行了数值研究。有效环半径小于2.2微米时无需非线性材料。输入信号和探测信号的波长相同。这种新器件有可能用于片上光子逻辑集成电路。
