Photonic Spin Hall Effect in Waveguides Composed of Two Types of Single-Negative Metamaterials.
Photonic Spin Hall Effect in Waveguides Composed of Two Types of Single-Negative Metamaterials.
复制标题
两种单负超材料组成的波导中的光子自旋霍尔效应
DOI：
10.1038/s41598-017-08171-y
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发表时间：
2017-08-10
影响因子：
4.6
通讯作者：
Chen H
中科院分区：
文献类型：
--
作者：
Guo Z;Jiang H;Long Y;Yu K;Ren J;Xue C;Chen H
偏振控制光信号路由在偏振分束器等光子学中有着重要的应用。利用带集总元件的二维传输线，实验证明了由两种单负超材料组成的光波导中导模的选择性激发。位于两种单负材料界面附近的局域圆极化发射体只与一个导模耦合，其特定的传播方向由源的偏振方向决定。此外，这种光学自旋-轨道锁定现象，也被称为光子自旋霍尔效应，对界面涨落具有很强的抵抗力，这可能在电磁信号的操纵中非常有用。
The polarization controlled optical signal routing has many important applications in photonics such as polarization beam splitter. By using two-dimensional transmission lines with lumped elements, we experimentally demonstrate the selective excitation of guided modes in waveguides composed of two kinds of single-negative metamaterials. A localized, circularly polarized emitter placed near the interface of the two kinds of single-negative metamaterials only couples with one guided mode with a specific propagating direction determined by the polarization handedness of the source. Moreover, this optical spin-orbit locking phenomenon, also called the photonic spin Hall effect, is robust against interface fluctuations, which may be very useful in the manipulation of electromagnetic signals.