Dynamical light control in longitudinally modulated segmented waveguide arrays
Dynamical light control in longitudinally modulated segmented waveguide arrays
复制标题
纵向调制分段波导阵列中的动态光控制
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
V. Vysloukh
中科院分区：
文献类型：
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作者：
Y. Kartashov;V. Vysloukh
我们讨论了光在分段波导阵列中的传输，其中折射率是通过相邻波导中的异相调制来纵向调制的，因此耦合强度沿传播方向变化。因此，在谐振段中，耦合可以被抑制，因此光保持局域化，而在失谐段中，耦合导致可以通过堆叠几个共振和非共振段来控制的复杂切换场景。通过调节波导段的调制频率和长度，可以控制光在输出导轨之间的分布，包括使所选输出通道中的所有光局部化。
We address light propagation in segmented waveguide arrays where the refractive index is longitudinally modulated with an out-of-phase modulation in adjacent waveguides, so that the coupling strength varies along the propagation direction. Thus in resonant segments coupling may be inhibited hence light remains localized, while in detuned segments coupling results in complex switching scenarios that may be controlled by stacking several resonant and nonresonant segments. By tuning the modulation frequency and lengths of the waveguide segments one may control the distribution of light among the output guides, including localizing all light in the selected output channel.