arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0809.4271physics.opticscond-mat.stat-mechphysics.class-ph
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耦合光波导中的自混沌现象

Self-Chaotization in Coupled Optical Waveguides

Ramaz Khomeriki, Archil Ugulava, Levan Chotorlishvili

摘要:

我们从理论上考虑了两个沿波导方向势垒高度变化的耦合光波导。屏障可以由具有减小的折射率的细长岛(其充当势垒)构造,使得在中间区域中,其将波导分成两个弱耦合部分。通过数值模拟和解析分析,预测了系统参数的某些缺陷会导致注入光束的分裂,在输出端会观察到两个强度最大值,而对于小的缺陷,输入和输出光束的强度分布将是相同的。两种状态之间的切换可以通过改变光束的光谱宽度或岛的折射率来实现。这种非平凡的效果解释的可能性之间的过渡系统的不同本征态在该地区的大势垒高度。该效应可用于全光再寻址和滤波。

英文摘要:

We consider theoretically two coupled optical waveguides with a varying barrier height along the waveguides direction. The barrier could be constructed by the elongated island with a reduced refractive index (which acts as a potential barrier), such that in the middle region it splits a waveguide into two weakly coupled parts. It is predicted by numerical simulations and analytical consideration that the presence of some imperfection of the system parameters can cause splitting of injected laser beam and one will observe two intensity maximums at the output, while for small imperfections the input and output beam intensity distributions will be the same. The switching between two regimes could be achieved changing spectral width of the beam or refractive index of the island. This nontrivial effect is explained by possibility of transitions between the different eigenstates of the system in the region of large potential barrier heights. The mentioned effect could be used for all-optical readdressing and filtering purposes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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