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    Photonic bandgap optical waveguide with anti-resonant core boundary
    2.
    发明授权
    Photonic bandgap optical waveguide with anti-resonant core boundary 有权
    具有反谐振核心边界的光子带隙光波导

    公开(公告)号：US07346249B2

    公开(公告)日：2008-03-18

    申请号：US10550095

    申请日：2004-03-22

    申请人： Philip St. John Russell ,  Peter John Roberts ,  David Philip Williams

    发明人： Philip St. John Russell ,  Peter John Roberts ,  David Philip Williams

    IPC分类号： G02B6/02

    CPC分类号： C03B37/0122 ,  B29D11/00721 ,  C03B37/01217 ,  C03B2201/82 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/22 ,  C03B2203/42 ,  G02B6/02347 ,  G02B6/02371 ,  G02B6/0238 ,  G02B6/02385 ,  Y02P40/57

    摘要： Improved photonic band-gap optical fibre The present invention relates in particular to improved photonic band-gap optical fibres that can confine light to a core region of the fibre by the action of both a photonic band-gap cladding and an antiresonant core boundary, at the interface between the core and cladding. According to embodiments of the present invention, a fibre has a core, comprising an elongate region of relatively low refractive index, a photonic bandgap structure arranged to provide a photonic bandgap over a range of wavelengths of light including an operating wavelength of light, the structure, in a transverse cross section of the waveguide, surrounding the core and comprising elongate relatively low refractive index regions interspersed with elongate relatively high refractive index regions and a relatively high refractive index boundary at the interface between the core defect and the photonic bandgap structure, the boundary having a thickness around the core such that the boundary is substantially anti-resonant at the operating wavelength of the fibre. In preferred embodiments, the core boundary is a relatively constant thickness region of glass around a hollow core.

    摘要翻译： 改进的光子带隙光纤技术领域本发明特别涉及通过光子带隙包层和反谐振核心边界的作用将光限制在光纤的核心区域的改进的光子带隙光纤， 芯与包层之间的界面。 根据本发明的实施例，光纤具有芯，其包括相对低折射率的细长区域，光子带隙结构被布置成在包括光的工作波长的光的波长范围内提供光子带隙，该结构 在波导的横截面中，围绕芯并且包括细长的相对较低的折射率区域，其散布有细长的相对高的折射率区域和在芯部缺陷和光子带隙结构之间的界面处的相对高的折射率边界， 边界具有围绕芯的厚度，使得边界在纤维的工作波长处基本上反共振。 在优选实施例中，芯边界是围绕中空芯的玻璃相对恒定的厚度区域。

    Birefringent photonic bandgap optical waveguide
    3.
    发明授权
    Birefringent photonic bandgap optical waveguide 有权
    双折射光子带隙光波导

    公开(公告)号：US07805038B2

    公开(公告)日：2010-09-28

    申请号：US10561594

    申请日：2004-06-21

    申请人： David Philip Williams ,  Timothy Adam Birks ,  Hendrik Sabert

    发明人： David Philip Williams ,  Timothy Adam Birks ,  Hendrik Sabert

    IPC分类号： G02B6/02

    CPC分类号： G02B6/024 ,  B82Y20/00 ,  C03B37/01205 ,  C03B37/01217 ,  C03B37/0122 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/22 ,  C03B2203/42 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/105

    摘要： A birefringent elongate waveguide for guiding light, comprises: a core region (110), comprising an elongate region of relatively low refractive index; and a cladding region (100), comprising elongate regions (105) of relatively low refractive index interspersed with elongate regions (117,120) of relatively high refractive index. In a transverse cross-section of the waveguide, a (5) relatively high refractive index boundary region (115) is provided that surrounds the core region and has either (1) at most two-fold rotational symmetry or (2) a rotational symmetry that reduces the rotational symmetry of the waveguide to at most two-fold rotational symmetry. The symmetry of the boundary region (115) results at least in part from azimuthal variations therein, which are substantially uncharacteristic of the cladding region (100).

    摘要翻译： 用于引导光的双折射细长波导包括：芯区（110），包括相对低折射率的细长区域; 和包层区域（100），包括相对较低折射率的细长区域（105），散射区域具有相对较高折射率的细长区域（117,120）。 在波导的横截面中，提供了（5）相对高折射率的边界区域（115），其围绕芯区域并且具有（1）至多两个旋转对称或（2）旋转对称 这将波导的旋转对称性降低到至多两个旋转对称。 边界区域（115）的对称性至少部分地由其中的方位角变化产生，这是包层区域（100）的基本上非特性。