Modeling of the dynamic transmission properties of chalcogenide ring resonators in the presence of fast and slow nonlinearities.
Modeling of the dynamic transmission properties of chalcogenide ring resonators in the presence of fast and slow nonlinearities.
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DOI：
10.1364/oe.19.000649
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发表时间：
2011-01
期刊：
影响因子：
3.8
通讯作者：
K. Ogusu;Y. Oda
中科院分区：
文献类型：
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作者：
K. Ogusu;Y. Oda
我们提出了一个简单的迭代方法计算的动态行为的环形谐振腔的快速和缓慢（累积）的光学非线性时，一个任意形状的包络线的光脉冲入射到他们。在慢非线性的情况下，非线性相移和非线性吸收在入射脉冲上进行时间积分。本文研究了两种由高非线性As_2Se_3硫系玻璃制成的单环谐振腔，并在已知非线性材料参数的条件下，研究了其动态特性（特别是累积非线性对光学双稳的影响）。结果表明，累积非线性抑制了开关后的过冲和振铃，减小了输入输出功率之间的滞环宽度，并使滞环中心向工作点移动。所得到的结果是有用的，在开发硫族化合物为基础的非线性光学器件和所提出的方法是适用于各种非线性光学器件的建模。
We propose a simple iterative method for calculating the dynamic behavior of ring resonators with fast and slow (cumulative) optical nonlinearities when an optical pulse with an arbitrary-shaped envelope is incident into them. In the case of a slow nonlinearity, the nonlinear phase shift and nonlinear absorption are temporally-integrated over the incident pulse. In this paper, we consider two types of single-ring resonators made out of As2Se3 chalcogenide glass with high nonlinearity and investigate the dynamic properties (especially the effect of the cumulative nonlinearity on optical bistability) using known nonlinear material parameters. It is found that the cumulative nonlinearity suppresses overshoot and ringing after switching, decreases the width of the hysteresis loop between the input and output powers, and shifts its center corresponding to the operating point. The obtained results are useful in developing chalcogenide-based bistable optical devices and the proposed approach is applicable to modeling of a variety of nonlinear optical devices.