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    • 24. 发明申请
    • Optical Modulator Including Electrically Controlled Ring Resonator
    • 包括电子控制环谐振器的光学调制器
    • US20090190875A1
    • 2009-07-30
    • US12243782
    • 2008-10-01
    • Alexandre BratkovskiTheodore I. Kamins
    • Alexandre BratkovskiTheodore I. Kamins
    • G02F1/035H01L33/00
    • G02F1/025G02F2203/055G02F2203/15
    • An optical modulator and related methods are described. In accordance with one embodiment, the optical modulator comprises a waveguide for guiding an optical signal, and further comprises a ring resonator disposed in evanescent communication with the waveguide for at least one predetermined wavelength of the optical signal. The optical modulator further comprises a semiconductor pnpn junction structure that is at least partially coextensive with at least a portion of a resonant light path of the ring resonator. The optical modulator is configured such that the semiconductor pnpn junction structure receives an electrical control signal thereacross. The electrical control signal controls a free carrier population in the resonant light path where coextensive with the pnpn junction structure. A resonance condition of the ring resonator at the predetermined wavelength is thereby controlled by the electrical control signal, and the optical signal is thereby modulated according to the electrical control signal.
    • 描述了光学调制器及相关方法。 根据一个实施例,光学调制器包括用于引导光学信号的波导,并且还包括环形谐振器,该环形谐振器设置成与光波导的至少一个预定波长的与波导的渐逝通信。 光调制器还包括半导体pnpn结结构,其至少部分地与环形谐振器的谐振光路的至少一部分共同延伸。 光调制器被配置为使得半导体pnpn结结构在其上接收电控信号。 电控制信号控制共振光路中与pnpn结结构共同延伸的自由载流子。 因此,通过电气控制信号控制环形谐振器在预定波长处的谐振状态,并且由此根据电气控制信号调制光信号。
    • 25. 发明授权
    • Controllable composite material
    • 可控复合材料
    • US07474456B2
    • 2009-01-06
    • US11700297
    • 2007-01-30
    • Shih-Yuan WangAlexandre Bratkovski
    • Shih-Yuan WangAlexandre Bratkovski
    • G02B26/08G02F1/29
    • G02F1/01B82Y20/00G02B1/007G02F2202/30
    • An apparatus and related methods for controlling propagation of incident radiation are described. In one embodiment, the apparatus comprises a composite material operable to exhibit at least one of a negative effective permittivity and a negative effective permeability for incident radiation at an operating frequency. The composite material comprises electromagnetically reactive cells of small dimension relative to a wavelength of the incident radiation. Each of the electromagnetically reactive cells comprises first and second electromagnetically reactive segments microelectromechanically movable relative to each other according to an applied control signal such that at least one of a capacitive and inductive property of the electromagnetically reactive cells is temporally controllable according to the applied control signal.
    • 描述了用于控制入射辐射传播的装置和相关方法。 在一个实施例中,该装置包括可操作以在工作频率处呈现出对于入射辐射的负有效介电常数和负有效磁导率中的至少一个的复合材料。 复合材料包括相对于入射辐射的波长小尺寸的电磁反应性电池。 每个电磁反应池包括根据所施加的控制信号相对于彼此微电子机械可移动的第一和第二电磁反应段,使得电磁反应室的电容和电感特性中的至少一个根据施加的控制信号在时间上是可控的 。
    • 26. 发明申请
    • Controllable composite material
    • 可控复合材料
    • US20080192331A1
    • 2008-08-14
    • US11700297
    • 2007-01-30
    • Shih-Yuan WangAlexandre Bratkovski
    • Shih-Yuan WangAlexandre Bratkovski
    • G02F1/29
    • G02F1/01B82Y20/00G02B1/007G02F2202/30
    • An apparatus and related methods for controlling propagation of incident radiation are described. In one embodiment, the apparatus comprises a composite material operable to exhibit at least one of a negative effective permittivity and a negative effective permeability for incident radiation at an operating frequency. The composite material comprises electromagnetically reactive cells of small dimension relative to a wavelength of the incident radiation. Each of the electromagnetically reactive cells comprises first and second electromagnetically reactive segments microelectromechanically movable relative to each other according to an applied control signal such that at least one of a capacitive and inductive property of the electromagnetically reactive cells is temporally controllable according to the applied control signal.
    • 描述了用于控制入射辐射传播的装置和相关方法。 在一个实施例中,该装置包括可操作以在工作频率处呈现出对于入射辐射的负有效介电常数和负有效磁导率中的至少一个的复合材料。 复合材料包括相对于入射辐射的波长小尺寸的电磁反应性电池。 每个电磁反应池包括根据所施加的控制信号相对于彼此微电子机械可移动的第一和第二电磁反应段,使得电磁反应室的电容和电感特性中的至少一个根据施加的控制信号在时间上是可控的 。
    • 27. 发明申请
    • BINARY ARRAYS OF NANOPARTICLES FOR NANO-ENHANCED RAMAN SCATTERING MOLECULAR SENSORS
    • 纳米增强纳米增强拉曼散射分子传感器的二元阵列
    • US20070252979A1
    • 2007-11-01
    • US11090352
    • 2005-03-25
    • Alexandre BratkovskiTheodore Kamins
    • Alexandre BratkovskiTheodore Kamins
    • G01J3/44G01N21/65
    • G01N21/658
    • A nano-enhanced Raman scattering (NERS)-active structure includes a substrate, a monolayer of nanoparticles disposed on a surface of the substrate, and a spacer material surrounding each nanoparticle in the monolayer of nanoparticles. The monolayer of nanoparticles includes a first plurality of nanoparticles and a second plurality of nanoparticles. The nanoparticles of the second plurality are interspersed among the first plurality and exhibit a plasmon frequency that differs from any plasmon frequency exhibited by the first plurality. Also described are a method for forming such a NERS-active structure and a NERS system that includes a NERS-active structure, an excitation radiation source, and a detector for detecting Raman scattered radiation.
    • 纳米增强拉曼散射(NERS)活性结构包括底物,设置在基底表面上的单层纳米颗粒,以及围绕纳米颗粒单层中的每个纳米颗粒的间隔物。 纳米颗粒的单层包括第一多个纳米颗粒和第二多个纳米颗粒。 第二多个纳米颗粒散布在第一多个中,并且表现出与第一多个表现出的任何等离子体频率不同的等离子体激元频率。 还描述了形成这样的NERS-活性结构的方法和包括NERS-活性结构,激发辐射源和用于检测拉曼散射辐射的检测器的NERS系统。