Open AccessAll-optical logic gates based on two-dimensional low-refractive-index nonlinear photonic crystal slabs
Author(s) -
Ye Liu,
Fei Qin,
Ziming Meng,
Fei Zhou,
Qinghe Mao,
Zhiyuan Li
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.001945
Subject(s) - photonic crystal , optics , materials science , logic gate , nor gate , refractive index , optoelectronics , and gate , nand gate , nonlinear optics , electronic engineering , physics , laser , engineering
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.