Liu Ye, Qin Fei, Meng Zi-Ming, Zhou Fei, Mao Qing-He, Li Zhi-Yuan
Laboratory of optical physics, National Laboratory for condensed Mater Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190, China.
Opt Express. 2011 Jan 31;19(3):1945-53. doi: 10.1364/OE.19.001945.
This article demonstrates theoretical design of ultracompact all-optical AND, NAND, OR, and NOR gates with two-dimensional nonlinear photonic crystal slabs. Compound Ag-polymer film with a low refractive index and large third-order nonlinearity is adopted as our nonlinear material and photonic crystal cavities with a relatively high quality factor of about 2000 is designed on this polymer slab. Numerical simulations show that all-optical logic gates with low pump-power in the order of tens of MW/cm2 can be achieved. These design results may provide very useful schemes and approaches for the realization of all-optical logic gates with low-cost, low-pump-power, high-contrast and ultrafast response-time.
本文展示了利用二维非线性光子晶体平板实现超紧凑型全光与门、与非门、或门和或非门的理论设计。采用具有低折射率和大三阶非线性的复合银聚合物薄膜作为我们的非线性材料，并在该聚合物平板上设计了品质因数相对较高、约为2000的光子晶体腔。数值模拟表明，可以实现泵浦功率低至数十兆瓦/平方厘米量级的全光逻辑门。这些设计结果可能为实现低成本、低泵浦功率、高对比度和超快响应时间的全光逻辑门提供非常有用的方案和方法。
