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    • 11. 发明申请
    • METHODS AND APPARATUS FOR VERTICAL COUPLING FROM DIELECTRIC WAVEGUIDES
    • 用于从电介质波形垂直耦合的方法和装置
    • WO2013148208A1
    • 2013-10-03
    • PCT/US2013/030987
    • 2013-03-13
    • MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    • YAACOBI, AmiSUN, JieWATTS, Michael
    • G02B6/10G02B6/38G02B6/36
    • G02B6/264G02B6/12007G02B6/1226G02B6/124G02B6/26G02B6/305
    • A frequency-chirped nano-antenna provides efficient sub-wavelength vertical emission from a dielectric waveguide. In one example, this nano-antenna includes a set of plasmonic dipoles on the opposite side of a S1YV4 waveguide from a ground plane. The resulting structure, which is less than half a wavelength long, emits a broadband beam (e.g., > 300 nm) that can be coupled into an optical fiber. In some embodiments, a diffractive optical element with unevenly shaped regions of high- and low-index dielectric material collimates the broadband beam for higher coupling efficiency. In some cases, a negative lens element between the nano-antenna and the diffractive optical element accelerates the emitted beam's divergence (and improves coupling efficiency), allowing for more compact packaging. Like the diffractive optical element, the negative lens element includes unevenly shaped regions of high- and low- index dielectric material that can be designed to compensate for aberrations in the beam emitted by the nano-antenna.
    • 频率啁啾的纳米天线从介质波导提供有效的亚波长垂直发射。 在一个示例中,该纳米天线包括在距离接地平面的S1YV4波导的相对侧上的一组等离子体偶极子。 所产生的结构小于一半波长,发射可耦合到光纤中的宽带光束(例如> 300nm)。 在一些实施例中,具有不均匀形状的高折射率和低折射率介电材料区域的衍射光学元件准直宽带光束以实现更高的耦合效率。 在一些情况下,纳米天线和衍射光学元件之间的负透镜元件加速了发射光束的发散(并提高耦合效率),从而允许更紧凑的封装。 像衍射光学元件一样,负透镜元件包括高折射率和低折射率介电材料的不均匀形状的区域,其可被设计为补偿由纳米天线发射的光束中的像差。
    • 15. 发明申请
    • METAMATERIAL-BASED OPTICAL LENSES
    • 基于金属基的光学透镜
    • WO2011100070A1
    • 2011-08-18
    • PCT/US2011/000268
    • 2011-02-14
    • THE REGENTS OF THE UNIVERSITY OF CALIFORNIAMA, ChangbaoLIU, Zhaowei
    • MA, ChangbaoLIU, Zhaowei
    • G02B3/00G02B6/00G02F1/29H01Q15/02
    • G02B6/1226B82Y20/00G02B1/002G02B6/107G02F2203/10H01Q15/0086H01Q15/02
    • Devices based on metamaterial structures to guide and manipulate light, other electromagnetic radiation and acoustic waves. For example, a lens can include a metamaterial structure comprising nano structures of metallic and dielectric materials; and a plasmonic waveguide coupler formed over the metamaterial structure for coupling electromagnetic radiation to or from metamaterial structure. The metamaterial structure has an anisotropic structure and the plasmonic waveguide coupler is structured to include metal and non-metal parts to support surface plasmon polaritons and to cause different phase delays at different locations of ' an interface with the metamaterial structure in a way that the metamaterial structure and the plasmonic waveguide coupler effect a lens for performing a Fourier transform of the electromagnetic radiation coupled between the metamaterial structure and the plasmonic waveguide coupler.
    • 基于超材料结构的设备来引导和操纵光,其他电磁辐射和声波。 例如,透镜可以包括包括金属和介电材料的纳米结构的超材料结构; 以及形成在超材料结构上的等离子体激元波导耦合器,用于将电磁辐射耦合到超材料结构或从超材料结构耦合。 超材料结构具有各向异性结构,等离子体激元波导耦合器被构造为包括金属和非金属部分以支撑表面等离子体激元极化并且在与超材料结构的界面的不同位置处引起不同的相位延迟, 结构和等离子体激元波导耦合器影响用于对耦合在超材料结构和等离子体激元波导耦合器之间的电磁辐射进行傅里叶变换的透镜。
    • 20. 发明申请
    • ASYMMETRIC WAVEGUIDE
    • 不对称波形
    • WO2010107796A2
    • 2010-09-23
    • PCT/US2010/027484
    • 2010-03-16
    • LIGHTWAVE POWER, INC.JIN, Ji
    • JIN, Ji
    • G02B6/12G02B6/132
    • G02B6/1226B82Y20/00G02B6/12007
    • An asymmetric waveguide layer which includes a metal film having an array of apertures defined in the metal film. The apertures extend from a first surface of the metal film to a second surface of the metal film. A plurality of photons have a wavelength of about λ 1 propagate through the asymmetric waveguide layer in one direction, and are substantially prevented from propagating in the other direction. An integrated solar cell is also described. First and second PV layers are disposed adjacent to and optically coupled to the asymmetric waveguide layer. A reflective layer is disposed adjacent to and optically coupled to the second PV layer second surface. Light passing through the asymmetric waveguide is substantially trapped within the second PV layer by a combination of reflection from the reflective layer and reflection by the asymmetric waveguide layer.
    • 不对称波导层,其包括金属膜,金属膜具有限定在金属膜中的孔阵列。 孔从金属膜的第一表面延伸到金属膜的第二表面。 多个波长大约为λ1的光子在一个方向上传播通过不对称波导层,并且基本上被阻止沿另一个方向传播。 还描述了集成太阳能电池。 第一和第二PV层被布置成与不对称波导层相邻并光耦合。 反射层设置成与第二PV层第二表面相邻并光学耦合。 穿过不对称波导的光通过来自反射层的反射和不对称波导层的反射的组合基本上被捕获在第二PV层内。