Analytical theory for the nonlinear optical response of a Kerr-type standing-wave cavity side-coupling to a MIM waveguide.
Analytical theory for the nonlinear optical response of a Kerr-type standing-wave cavity side-coupling to a MIM waveguide.
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DOI：
10.1364/oe.21.023687
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发表时间：
2013-10
期刊：
影响因子：
3.8
通讯作者：
Ye Liu;Fei Zhou;Q. Mao
中科院分区：
文献类型：
--
作者：
Ye Liu;Fei Zhou;Q. Mao
本文结合时间耦合模理论和克尔非线性，提出了一种描述由克尔型驻波腔与金属-绝缘体-金属（MIM）波导侧面耦合形成的典型SPP波导腔结构的非线性动态响应特性的解析理论。利用解析理论成功地预测了具有滞后行为的光学双稳，并从唯象的角度分析了光学双稳的演化及其动力学物理机制。此外，还详细讨论了品质因子Q_（max）和Q_（max）对光学双稳的第一转折点功率和双稳区宽度的影响，以及减小第一转折点功率和拓宽双稳区的途径。这一工作有助于我们理解纳米尺度下非线性动力学响应的物理机制，并可能有助于设计应用于超紧凑型全光器件和存储器的非线性纳米光子系统。
In this article, an analytical theory to describe the nonlinear dynamic response characteristics of a typical SPP waveguide-cavity structure formed by a Kerr-type standing-wave cavity side-coupling to a metal-insulator-metal (MIM) waveguide is proposed by combining the temporal coupled mode theory and the Kerr nonlinearity. With the analytical theory, the optical bistability with the hysteresis behavior is successfully predicted, and the optical bistability evolutions and its dynamic physical mechanism are also phenomenologically analyzed. Moreover, the influence of the quality factors Q₀ and Q₁ on the first-turnning point (FTP) power of optical bistability and the bistable region width, the approaches to decrease the FTP power and to broaden the bistable region are also discussed in detail with our analytical theory. This work can help us understand the physical mechanism of the nonlinear dynamical response at nanoscale, and may be useful to design nonlinear nanophotonic systems for applications in ultra-compact all-optical devices and storages.