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arXiv 1610.04040physics.optics
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超颖表面偏振分束器

Metasurface polarization splitter

Brian A. Slovick, You Zhou, Zhi Gang Yu, Ivan I. Kravchenckou, Dayrl P. Briggs, Parikshit Moitra, Srini Krishnamurthy, Jason Valentine

摘要:

偏振分束器是将两个正交偏振的光分离到不同传播方向的器件,是最普遍的光学元件之一。然而,传统的偏振分束器依赖于庞大的光学材料,而新兴的光电和光子电路需要紧凑的芯片级偏振分束器。在这里,我们证明了圆柱形硅米氏谐振器的亚波长矩形晶格具有偏振分离器的功能,有效地反射一种偏振,同时传输另一种偏振。我们表明,极化分裂产生的各向异性介电常数和磁导率的超颖表面由于双重旋转对称的矩形单胞。高偏振效率、低损耗和低轮廓使得这些超颖表面偏振分束器非常适合与光电和光子电路的单片集成。

英文摘要:

Polarization beam splitters, devices that separate the two orthogonal polarizations of light into different propagation directions, are one of the most ubiquitous optical elements. However, traditionally polarization splitters rely on bulky optical materials, while emerging optoelectronic and photonic circuits require compact, chip-scale polarization splitters. Here we show that a subwavelength rectangular lattice of cylindrical silicon Mie resonators functions as a polarization splitter, efficiently reflecting one polarization while transmitting the other. We show that the polarization splitting arises from the anisotropic permittivity and permeability of the metasurface due to the two-fold rotational symmetry of the rectangular unit cell. The high polarization efficiency, low loss, and low profile make these metasurface polarization splitters ideally suited for monolithic integration with optoelectronic and photonic circuits.

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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