Optical bistability in metal gap waveguide nanocavities.
Optical bistability in metal gap waveguide nanocavities.
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DOI：
10.1364/oe.16.008421
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发表时间：
2008-06
期刊：
影响因子：
3.8
通讯作者：
Yun Shen;Guo Ping Wang
中科院分区：
文献类型：
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作者：
Yun Shen;Guo Ping Wang
将一块非线性光学材料填充到金属带隙光波导中，构成金属-介电纳米腔，以实现纳米域的光学双稳。时域有限差分模拟表明，这种结构可以在纳米尺度的非线性介质中以更弱的工作光功率实现光学双稳效应。我们将其归因于局域场强的增强和表面等离子体激元的纳米尺度限制。我们的结果验证了一种构建纳米级光逻辑门、开关和全光晶体管等用于高密度光学电路集成的可行方法。
Metal-dielectric nanocavities constructed by filling a piece of nonlinear optical material into metal gap waveguides are introduced for realizing optical bistability in nanodomain. Finite-difference time-domain simulation reveal that such a structure can realize optical bistable effect with much weaker operating light power in a nanoscale nonlinear medium. We attribute it to the enhancement of local field intensity and nanoscale confinement of surface plasmon polaritons. Our results verify a feasible way for constructing nanoscale optical logical gates, switches, and all-optical transistors etc. for high density integration of optical circuits.