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    • 84. 发明授权
    • Random negative index material structures in a three-dimensional volume
    • 三维体积中的随机负指数材料结构
    • US07593170B2
    • 2009-09-22
    • US11584320
    • 2006-10-20
    • Wei WuShih-Yuan WangAlexandre M. Bratkovski
    • Wei WuShih-Yuan WangAlexandre M. Bratkovski
    • G02B13/18H01B3/24
    • G02B1/00B82Y20/00G02B1/007G02F2202/30H01Q15/0086
    • Materials and methods for fabricating and using negative index materials are disclosed. A negative index material comprises a three-dimensional volume including a bulk solution and a plurality of unit cells disposed in the bulk solution in a substantially random pattern. Each unit cell comprises a periodic hole array pattern on a substrate or a resonator formed on a first surface of a substrate, and a thin wire pattern formed on a second surface of the substrate. The combination of the unit cells in the bulk solution produces a negative effective permeability and a negative effective permittivity over a frequency band of interest for the three-dimensional volume. The negative index material may be used to focus radiation by directing an incident radiation at the negative index material and generating a focused radiation by a negative refraction of the incident radiation in the negative index material.
    • 公开了制造和使用负指数材料的材料和方法。 负指数材料包括三维体积,其包括本体溶液和以大致随机图案设置在本体溶液中的多个单元电池。 每个单元电池包括在衬底上形成的周期性孔阵列图案或形成在衬底的第一表面上的谐振器,以及形成在衬底的第二表面上的细线图案。 本体溶液中的单元电池的组合在三维体积的感兴趣频带上产生负的有效磁导率和负的有效介电常数。 负折射率材料可以用于通过在负指数材料处引入入射辐射来聚焦辐射,并通过负指数材料中的入射辐射的负折射产生聚焦辐射。
    • 89. 发明申请
    • Free space WDM signal detector
    • 自由空间WDM信号检测器
    • US20090027658A1
    • 2009-01-29
    • US11881557
    • 2007-07-27
    • Raymond G. BeausoleilWei WuDavid A. FattalMarco Fiorentino
    • Raymond G. BeausoleilWei WuDavid A. FattalMarco Fiorentino
    • G01N21/00
    • H04B10/1121
    • A system can include a transmitter that produces an optical signal having a plurality of carrier frequencies and a receiver separated from the transmitter by free space through which the optical signal propagates. The receiver includes an array of detectors of multiple types, with the types being capable of detecting light respectively having the carrier frequencies. A location of an incident area where the optical signal is incident on the detector array generally depends on a misalignment of the receiver relative to the transmitter, but the detectors in the detector array are arranged so that at least one detector of each of the types detects light from the optical signal regardless of where the incident area is on the detector array.
    • 系统可以包括产生具有多个载波频率的光信号的发射机,以及通过光信号传播的自由空间与发射机分离的接收机。 该接收机包括多种类型的检测器阵列,其类型能够检测分别具有载波频率的光。 光信号入射在检测器阵列上的入射区域的位置通常取决于接收器相对于发射器的未对准,但检测器阵列中的检测器被布置成使得每种类型的至少一个检测器检测 来自光信号的光,而不管入射面积在检测器阵列上的哪里。