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    • 4. 发明授权
    • Millimeter and sub-millimeter wave detection
    • 毫米和亚毫米波检测
    • US07486247B2
    • 2009-02-03
    • US11622700
    • 2007-01-12
    • Richard W. RidgwaySteven RisserDavid W. Nippa
    • Richard W. RidgwaySteven RisserDavid W. Nippa
    • H01Q13/10
    • H01Q13/085G02F1/065G02F2201/127G02F2202/07H01Q21/061
    • In accordance with one embodiment of the present invention, an antenna assembly comprising an antenna portion and an electrooptic waveguide portion is provided. The antenna portion comprises at least one tapered slot antenna. The waveguide portion comprises at least one electrooptic waveguide. The electrooptic waveguide comprises a waveguide core extending substantially parallel to a slotline of the tapered slot antenna in an active region of the antenna assembly. The electrooptic waveguide at least partially comprises a velocity matching electrooptic polymer in the active region of the antenna assembly. The velocity νe of a millimeter or sub-millimeter wave signal traveling along the tapered slot antenna in the active region is at least partially a function of the dielectric constant of the velocity matching electrooptic polymer. In addition, the velocity νO of an optical signal propagating along the waveguide in the active region is at least partially a function of the index of refraction of the velocity matching electrooptic polymer. Accordingly, the active region and the velocity matching electrooptic polymer can be configured such that νe and νO are substantially the same, or at least within a predetermined range of each other, in the active region. Additional embodiments are disclosed and claimed.
    • 根据本发明的一个实施例,提供一种包括天线部分和电光波导部分的天线组件。 天线部分包括至少一个锥形缝隙天线。 波导部分包括至少一个电光波导。 电光波导包括在天线组件的有源区域中基本上平行于锥形缝隙天线的槽线延伸的波导芯。 电光波导至少部分地包括天线组件的有源区域中的速度匹配电光聚合物。 在有源区域中沿着锥形槽天线行进的毫米波或亚毫米波信号的速度Nue至少部分地是速度匹配电光聚合物的介电常数的函数。 另外,在有源区中沿着波导传播的光信号的速度nuO至少部分地是速度匹配电光聚合物的折射率的函数。 因此,活性区域和速度匹配电光聚合物可以被配置为使得nue和nuO在活性区域中基本相同或至少在彼此的预定范围内。 公开并要求保护附加实施例。
    • 6. 发明申请
    • Liquid crystal materials and electrooptic devices with a liquid crystal-containing cladding
    • 液晶材料和含有液晶的包层的电光装置
    • US20060182401A1
    • 2006-08-17
    • US11403657
    • 2006-04-13
    • Steven RisserVincent McGinnisKevin SpahrRichard HigginsRichard RidgwayZhihua HuangEdward Jiang
    • Steven RisserVincent McGinnisKevin SpahrRichard HigginsRichard RidgwayZhihua HuangEdward Jiang
    • G02B6/10
    • C09K19/544G02F1/1326G02F1/1334G02F1/216G02F1/225G02F2001/212
    • Broadly, then, one aspect of the present invention is a functional optical material composed of a liquid crystal (LC) evidencing a pair of refractive indices (RI's) and a polymer in which the LC is dispersed. The refractive index (RI) of said polymer may be outside of the L C RI's by at least about 0.03. Another aspect of the present invention is a functional optical material composed of a liquid crystal (LC) and a polymer in which the LC is dispersed, wherein said LC is less than about 5% miscible in said polymer. A further aspect of the present invention is a functional optical material composed of a liquid crystal (LC) and a polymer in which the LC is dispersed, wherein the cladding contains not more than about 20 wt-% LC. In all of these embodiments, the functional optical material can be clad to an optical waveguide and can optionally contain a chromophore. In yet another aspect of the present invention, a functional optical waveguide is composed of a polymer having a refractive index, RIP and an optical waveguide clad having a refractive index, RIWG, wherein RIP is at least about 0.3% lower than RIWG under operating conditions of said clad optical waveguide.
    • 因此,广义地说,本发明的一个方面是由液晶(LC)构成的功能性光学材料,该液晶(LC)表示一对折射率(RI)和分散有LC的聚合物。 所述聚合物的折射率(RI)可以在L C RI之外至少约0.03。 本发明的另一方面是由液晶(LC)和其中分散有LC的聚合物组成的功能性光学材料,其中所述LC小于约5%在所述聚合物中混溶。 本发明的另一方面是由液晶(LC)和分散有LC的聚合物构成的功能性光学材料,其中包层含有不超过约20重量%的LC。 在所有这些实施例中,功能性光学材料可以包覆到光波导并且可以可选地包含发色团。 在本发明的又一方面中,功能性光波导由具有折射率的聚合物RI< P>和具有折射率RI >,其中在所述包层光波导的操作条件下,RI比RIWG至少低约0.3%。