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    Photonic crystal waveguides and systems using such waveguides
    8.
    发明授权
    Photonic crystal waveguides and systems using such waveguides 有权
    光子晶体波导和使用这种波导的系统

    公开(公告)号：US07231122B2

    公开(公告)日：2007-06-12

    申请号：US10978605

    申请日：2004-11-01

    申请人： Ori Weisberg ,  Steven A. Jacobs ,  Maksim Skorobogatiy ,  Steven G. Johnson ,  Uri Kolodny

    发明人： Ori Weisberg ,  Steven A. Jacobs ,  Maksim Skorobogatiy ,  Steven G. Johnson ,  Uri Kolodny

    IPC分类号： G02B6/02 ,  G02B6/26 ,  G02B6/032 ,  G02B5/30

    CPC分类号： G02B6/02304 ,  G02B6/02328 ,  G02B6/02361 ,  G02B6/03622 ,  G02B6/03688 ,  G02B6/03694

    摘要： In general, in one aspect, the invention features an apparatus that includes a photonic crystal fiber configured to guide a mode of electromagnetic radiation at a wavelength, λ, along a waveguide axis. The fiber includes a core extending along the waveguide axis, and a confinement region extending along the waveguide axis and surrounding the core. The confinement region includes alternating layers of a first and a second dielectric material having thicknesses d1 and d2 and different refractive indices n1 and n2, respectively. The thickness of at least one of the alternating layers of the first material differs from thickness d1QW or at least one of the alternating layers of the second material differs from thickness d2QW, where d1QW and d2QW correspond to a quarter-wave condition for the two dielectric materials given by d1QW=λ/(4√{square root over (n12−1)}) and d2QW=λ/(4√{square root over (n22−1)}), respectively. The photonic crystal fiber has an attenuation for the guided mode at the wavelength λ that is reduced by a factor of about two or more relative to an attenuation for a reference fiber that is identical to the photonic crystal fiber except that the reference fiber has alternating layer thicknesses corresponding to the quarter-wave condition.

    摘要翻译： 通常，在一个方面，本发明的特征在于一种装置，其包括光子晶体光纤，其被配置为沿波导轴引导波长λ的电磁辐射模式。 光纤包括沿波导轴延伸的芯，以及沿着波导轴线延伸并围绕芯的约束区域。 限制区域包括具有厚度d 1和2 2的不同折射率n 1和n 2的第一和第二介电材料的交替层，n 2 。 第一材料的至少一个交替层的厚度与厚度d不同，或者第二材料的至少一个交替层与厚度d不同 QW ，其中d <1> QW 和d <2> QW / SUP>对应于通过d 1给出的两个电介质材料的四分之一波长条件QW =λ/（4√{平方根超过（n <1） ＆lt; / SUB＆gt;＆lt; 2＆gt; 1）}）和d 2 QW 2 2 -1）}）。 光子晶体光纤对于在波长λ处的导模的衰减相对于与光子晶体光纤相同的参考光纤的衰减相比减小约两倍或更多的因子，除了参考光纤具有交替层 厚度对应于四分之一波长条件。

    Photonic crystal waveguides and systems using such waveguides
    9.
    发明申请
    Photonic crystal waveguides and systems using such waveguides 有权
    光子晶体波导和使用这种波导的系统

    公开(公告)号：US20050271340A1

    公开(公告)日：2005-12-08

    申请号：US10978605

    申请日：2004-11-01

    申请人： Ori Weisberg ,  Steven Jacobs ,  Maksim Skorobogatiy ,  Steven Johnson ,  Uri Kolodny

    发明人： Ori Weisberg ,  Steven Jacobs ,  Maksim Skorobogatiy ,  Steven Johnson ,  Uri Kolodny

    IPC分类号： G02B6/02 ,  G02B6/036

    CPC分类号： G02B6/02304 ,  G02B6/02328 ,  G02B6/02361 ,  G02B6/03622 ,  G02B6/03688 ,  G02B6/03694

    摘要： In general, in one aspect, the invention features an apparatus that includes a photonic crystal fiber configured to guide a mode of electromagnetic radiation at a wavelength, λ, along a waveguide axis. The fiber includes a core extending along the waveguide axis, and a confinement region extending along the waveguide axis and surrounding the core. The confinement region includes alternating layers of a first and a second dielectric material having thicknesses d1 and d2 and different refractive indices n1 and n2, respectively. The thickness of at least one of the alternating layers of the first material_differs from thickness d1QW or at least one of the alternating layers of the second material_differs from thickness d2QW, where d1QW and d2QW correspond to a quarter-wave condition for the two dielectric materials given by d1QW=λ/(4{square root}{square root over (n12−1)}) and d2QW=λ/(4{square root}{square root over (n22−1)}), respectively. The photonic crystal fiber has an attenuation for the guided mode at the wavelength λ that is reduced by a factor of about two or more relative to an attenuation for a reference fiber that is identical to the photonic crystal fiber except that the reference fiber has alternating layer thicknesses corresponding to the quarter-wave condition.

    摘要翻译： 通常，在一个方面，本发明的特征在于一种装置，其包括光子晶体光纤，其被配置为沿波导轴引导波长λ的电磁辐射模式。 光纤包括沿波导轴延伸的芯，以及沿着波导轴线延伸并围绕芯的约束区域。 限制区域包括具有厚度d 1和2 2的不同折射率n 1和n 2的第一和第二电介质材料的交替层，n 2 。 第一材料的至少一个交替层的厚度来自厚度d <1> QW /或第二材料的至少一个交替层，厚度d ，其中d <1> QW 和D <2> QW >对应于由d 1 / Q Q（λ）=λ/（4 {平方根} {平方根（n> 1）给出的两个介电材料的四分之一波长条件， 1 2 -1）}）和d 2 QW =λ/（4 {平方根} {平方根超过（ 2 2 -1）}）。 光子晶体光纤对于在波长λ处的导模的衰减相对于与光子晶体光纤相同的参考光纤的衰减相比减小约两倍或更多的因子，除了参考光纤具有交替层 厚度对应于四分之一波长条件。

    Plasmon excitation by the gaussian-like core mode of a photonic crystal waveguide
    10.
    发明授权
    Plasmon excitation by the gaussian-like core mode of a photonic crystal waveguide 失效
    通过光子晶体波导的高斯型核心模式进行等离子体激发

    公开(公告)号：US07460238B2

    公开(公告)日：2008-12-02

    申请号：US11739270

    申请日：2007-04-24

    申请人： Maksim Skorobogatiy ,  Andrei V. Kabashin

    发明人： Maksim Skorobogatiy ,  Andrei V. Kabashin

    IPC分类号： G01N21/55 ,  H01S3/14 ,  H01S3/08 ,  G02B6/12 ,  G02B6/02

    CPC分类号： G01N21/553 ,  B82Y20/00 ,  G01N21/7703 ,  G02B6/023 ,  G02B6/02328 ,  G02B6/02352 ,  G02B6/1226

    摘要： A sensor and method for surface plasmon resonance sensing, wherein a small variation of the refractive index of an ambient medium results in a large variation of loss of a sensing mode. The surface plasmon resonance sensor comprises an antiguiding waveguide including a core characterized by a refractive index and a reflector surrounding the core. The reflector has an external surface and is characterized by a band gap and a refractive index higher than the refractive index of the core. A coating is deposited on the external surface of the core, the coating defining with the ambient medium a coating/ambient medium interface. In operation, the coating is in contact with the ambient medium, and the antiguiding waveguide is supplied with an electromagnetic radiation to (a) propagate a mode for sensing having an effective refractive index lower than the refractive index of the core and higher than a refractive index of an ambient medium and (b) produce surface plasmons at the coating/ambient medium interface. The mode for sensing is phase-matched with the surface plasmons at a wavelength within the band gap and a variation of the refractive index of the ambient medium results in a variation of loss of the sensing mode to detect a characteristic of the ambient medium.

    摘要翻译： 用于表面等离子体共振感测的传感器和方法，其中环境介质的折射率的小变化导致感测模式的损失的大的变化。 表面等离子体共振传感器包括一个防偏导波导，其包括以折射率为特征的芯和围绕芯的反射器。 反射器具有外表面，其特征在于带隙和折射率高于芯的折射率。 涂层沉积在芯的外表面上，涂层用环境介质界定涂层/环境介质界面。 在操作中，涂层与环境介质接触，并且向抗磁波导提供电磁辐射，以（a）传播具有低于芯的折射率的有效折射率并且高于折射率的感测模式 环境介质的指数和（b）在涂覆/环境介质界面处产生表面等离子体激元。 用于感测的模式与带隙内的波长处的表面等离子体相位匹配，并且环境介质的折射率的变化导致感测模式的损失的变化以检测周围介质的特性。