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arXiv 1004.3633physics.optics
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抛物型光波导阵列中布洛赫振荡与偶极振荡的转向

Steering between Bloch oscillation and dipole oscillation in parabolic optical waveguide arrays

Ming Jie Zheng, Yun San Chan, Kin Wah Yu

摘要:

本文研究了传输常数呈抛物线渐变的平面光波导阵列中通过最近邻耦合相互作用的超模的光学振荡。在这些阵列中,我们已经确定了一个过渡之间的对称偶极振荡(DO)和破缺布洛赫振荡(BO)在适当的条件下。梯度局域化与各种光学振荡之间存在着明显的对应关系。利用光学系统的振荡与平面摆的振荡之间的类比,我们提出了梯度轮廓的移动引起从BO到DO的转变。我们确认的光学跃迁的哈密顿光学的装置,以及由场的演化的超模。这些结果在光开关中具有很大的应用潜力,可用于设计合适的光器件。

英文摘要:

We study the optical oscillations of supermodes in planar optical waveguide arrays with parabolically graded propagation constant in individual waveguide interacting through nearest neighbor couplings. In these arrays, we have identified a transition between a symmetric dipole oscillation (DO) and a symmetry-breaking Bloch oscillation (BO) under appropriate conditions. There exist obvious correspondences between gradon localization and various optical oscillations. By virtue of an analogue between the oscillation of optical system and that of a plane pendulum, we propose a shift of the graded profile to cause a transition from BO to DO. We confirm the optical transition by means of Hamiltonian optics, as well as by the field evolution of the supermodes. The results offer great potential applications in optical switching, which can be applied to design suitable optical devices.

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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