Optical fiber with a core ring
    1.
    发明授权
    Optical fiber with a core ring 有权
    光纤带芯环

    公开(公告)号:US07489848B2

    公开(公告)日:2009-02-10

    申请号:US11971181

    申请日:2008-01-08

    IPC分类号: G02B6/032 G02B6/02

    摘要: An optical fiber includes a cladding with a material having a first refractive index and a pattern of regions formed therein. Each of the regions has a second refractive index lower than the first refractive index. The optical fiber further includes a core region and a core ring surrounding the core region and having an inner perimeter, an outer perimeter, and a thickness between the inner perimeter and the outer perimeter. The thickness is sized to reduce the number of ring surface modes supported by the core ring.

    摘要翻译: 光纤包括具有第一折射率的材料和其中形成的区域的图案的包层。 每个区域具有低于第一折射率的第二折射率。 光纤还包括芯区域和围绕芯区域的芯环,并且具有内周边,外周边和内周边与外周边之间的厚度。 厚度的大小可以减小由芯环支撑的环表面模式的数量。

    Photonic-bandgap fiber with a core ring
    3.
    发明授权
    Photonic-bandgap fiber with a core ring 有权
    带有核心环的光子带隙光纤

    公开(公告)号:US07400806B2

    公开(公告)日:2008-07-15

    申请号:US11737683

    申请日:2007-04-19

    IPC分类号: G02B6/02

    摘要: A photonic-bandgap fiber includes a photonic crystal lattice with a material having a first refractive index and a pattern of regions formed therein. Each of the regions has a second refractive index lower than the first refractive index. The photonic-bandgap fiber further includes a core and a core ring surrounding the core and having an inner perimeter, an outer perimeter, and a thickness between the inner perimeter and the outer perimeter. The thickness is sized to reduce the number of ring surface modes supported by the core ring.

    摘要翻译: 光子带隙光纤包括具有第一折射率的材料和形成在其中的区域的图案的光子晶格。 每个区域具有低于第一折射率的第二折射率。 光子带隙光纤还包括芯部和围绕芯部的芯环,并且具有内周边,外周边和内周边与外周边之间的厚度。 厚度的大小可以减小由芯环支撑的环表面模式的数量。

    Optical fiber
    4.
    发明授权
    Optical fiber 有权
    光纤

    公开(公告)号:US08428412B2

    公开(公告)日:2013-04-23

    申请号:US12356510

    申请日:2009-01-20

    IPC分类号: G02B6/032

    摘要: An optical fiber includes a cladding with a material having a first refractive index and a pattern of regions formed therein. Each of the regions has a second refractive index lower than the first refractive index. The optical fiber further includes a core region and a core ring having an inner perimeter, an outer perimeter, and a thickness between the inner perimeter and the outer perimeter. The thickness is sized to reduce the number of ring surface modes supported by the core ring.

    摘要翻译: 光纤包括具有第一折射率的材料和其中形成的区域的图案的包层。 每个区域具有低于第一折射率的第二折射率。 光纤还包括芯区域和芯环,其具有内周边,外周边和内周边与外周边之间的厚度。 厚度的大小可以减小由芯环支撑的环表面模式的数量。

    Optical sensor utilizing hollow-core photonic bandgap fiber with low phase thermal constant
    5.
    发明授权
    Optical sensor utilizing hollow-core photonic bandgap fiber with low phase thermal constant 有权
    光学传感器利用空心光子带隙光纤具有低相位热常数

    公开(公告)号:US07619743B2

    公开(公告)日:2009-11-17

    申请号:US11770660

    申请日:2007-06-28

    IPC分类号: G01C19/72

    摘要: An optical sensor includes a directional coupler comprising at least a first port, a second port, and a third port. The first port is in optical communication with the second port and with the third port such that a first optical signal received by the first port is split into a second optical signal that propagates to the second port and a third optical signal that propagates to the third port. The optical sensor further includes a photonic bandgap fiber having a hollow core and an inner cladding generally surrounding the core. The photonic bandgap fiber is in optical communication with the second port and with the third port. The second optical signal and the third optical signal counterpropagate through the photonic bandgap fiber and return to the third port and the second port, respectively. The photonic bandgap fiber has a phase thermal constant S less than 8 parts-per-million per degree Celsius.

    摘要翻译: 光学传感器包括至少包括第一端口,第二端口和第三端口的定向耦合器。 第一端口与第二端口和第三端口光通信,使得由第一端口接收的第一光信号被分裂成传播到第二端口的第二光信号和传播到第三端口的第三光信号 港口。 光学传感器还包括具有中空芯和通常围绕芯的内包层的光子带隙光纤。 光子带隙光纤与第二端口和第三端口光通信。 第二光信号和第三光信号通过光子带隙光纤反向传播并分别返回到第三端口和第二端口。 光子带隙光纤的相位热常数S小于每摄氏摄氏度百万分之八。

    Photonic-bandgap fiber with a core ring
    6.
    发明授权
    Photonic-bandgap fiber with a core ring 有权
    带有核心环的光子带隙光纤

    公开(公告)号:US07228041B2

    公开(公告)日:2007-06-05

    申请号:US11123879

    申请日:2005-05-06

    IPC分类号: G02B6/20

    摘要: A photonic-bandgap fiber includes a photonic crystal lattice with a first material having a first refractive index and a pattern of a second material formed therein. The second material has a second refractive index lower than the first refractive index. The photonic crystal lattice has a plurality of first regions that support intensity lobes of the highest frequency bulk mode and has a plurality of second regions that do not support intensity lobes of the highest frequency bulk mode. The photonic-bandgap fiber further includes a central core formed in the photonic crystal lattice. The photonic-bandgap fiber further includes a core ring having an outer perimeter. The core ring surrounds the central core, wherein the outer perimeter of the core ring passes only through the second regions of the photonic crystal lattice.

    摘要翻译: 光子带隙光纤包括具有第一材料的光子晶格,其具有第一折射率和在其中形成的第二材料的图案。 第二材料具有比第一折射率低的第二折射率。 光子晶格具有多个第一区域,其支持最高频率体模式的强度波瓣,并且具有不支持最高频率体模式的强度波瓣的多个第二区域。 光子带隙光纤还包括形成在光子晶格中的中心核心。 光子带隙光纤还包括具有外周边的芯环。 芯环围绕中心芯,其中芯环的外周仅穿过光子晶格的第二区。

    Method for configuring air-core photonic-bandgap fibers free of surface modes
    7.
    发明授权
    Method for configuring air-core photonic-bandgap fibers free of surface modes 有权
    用于配置不含表面模式的空芯光子带隙光纤的方法

    公开(公告)号:US07110650B2

    公开(公告)日:2006-09-19

    申请号:US10938755

    申请日:2004-09-10

    IPC分类号: G02B6/20

    摘要: Coupling of core modes to surface modes in an air-core photonic-bandgap fiber (PBF) can cause large propagation losses. Computer simulations analyze the relationship between the geometry and the presence of surface modes in PBFs having a triangular hole pattern and identify ranges of core characteristic dimensions (e.g., radii) for which the fiber supports no surface modes (i.e., only core modes are present) over the entire wavelength range of the bandgap. In particular, for a hole spacing Λ and a hole radius ρ=0.47Λ, the core supports a single mode and supports no surface modes for core radii between about 0.68Λ and about 1.05Λ. The existence of surface modes can be predicted simply and expediently by studying either the bulk modes alone or the geometry of the fiber without requiring a full analysis of the defect modes.

    摘要翻译: 核心模式与空芯光子带隙光纤(PBF)中的表面模式的耦合可能导致较大的传播损耗。 计算机模拟分析了具有三角孔图案的PBF中的几何形状和表面模式的存在之间的关系,并且识别纤维不支持表面模式(即,仅存在核心模式)的核心特征尺寸(例如,半径)的范围, 在带隙的整个波长范围内。 特别地,对于孔间距λ和孔半径rho =0.47λ,核心支持单一模式,并且在大约0.68λ至大约1.05Lambda之间不支持核心半径的表面模式。 表面模式的存在可以通过单独研究单独的体模式或光纤的几何形状而不需要对缺陷模式进行全面分析来简单和方便地预测。

    Multiple-core optical fiber with coupling between the cores
    8.
    发明授权
    Multiple-core optical fiber with coupling between the cores 有权
    多芯光纤与芯之间具有耦合

    公开(公告)号:US08385697B2

    公开(公告)日:2013-02-26

    申请号:US13313264

    申请日:2011-12-07

    IPC分类号: G02B6/26

    摘要: An optical fiber includes a cladding, a first core, and a second core. At least one of the first core and the second core is hollow and is substantially surrounded by the cladding. At least a portion of the first core is generally parallel to and spaced from at least a portion of the second core. The optical fiber includes a defect substantially surrounded by the cladding, the defect increasing a coupling coefficient between the first core and the second core.

    摘要翻译: 光纤包括包层,第一芯和第二芯。 第一芯和第二芯中的至少一个是中空的并且基本上被包层包围。 第一芯的至少一部分通常与第二芯的至少一部分平行并间隔开。 光纤包括基本上被包层围绕的缺陷,缺陷增加了第一芯和第二芯之间的耦合系数。

    Multiple-core photonic-bandgap fiber with coupling between the cores
    9.
    发明授权
    Multiple-core photonic-bandgap fiber with coupling between the cores 有权
    核心之间具有耦合的多核光子带隙光纤

    公开(公告)号:US07551819B2

    公开(公告)日:2009-06-23

    申请号:US11681019

    申请日:2007-03-01

    摘要: An optical coupler includes a first optical port, a second optical port, a third optical port, and a fourth optical port. The optical coupler further includes a photonic-bandgap fiber having a cladding, a first core, and a second core. The cladding includes a material with a first refractive index and regions within the cladding. The regions have a second refractive index lower than the first refractive index. The first core is substantially surrounded by the cladding. The first core is optically coupled to the first optical port and to the second optical port. The second core is substantially surrounded by the cladding. The second core is optically coupled to the third optical port and to the fourth optical port. At least a portion of the first core is generally parallel to and spaced from at least a portion of the second core such that the first core is optically coupled to the second core. The first core, the second core, or both the first core and the second core is hollow.

    摘要翻译: 光耦合器包括第一光口,第二光口,第三光口和第四光口。 光耦合器还包括具有包层,第一芯和第二芯的光子带隙光纤。 包层包括具有第一折射率的材料和包层内的区域。 这些区域具有低于第一折射率的第二折射率。 第一芯基本上被包层包围。 第一核心光耦合到第一光端口和第二光端口。 第二芯基本上被包层包围。 第二核心光耦合到第三光端口和第四光端口。 第一芯的至少一部分通常与第二芯的至少一部分平行并间隔开,使得第一芯与光学耦合到第二芯。 第一核心,第二核心或第一核心和第二核心都是空心的。

    Multiple-core optical fiber with coupling between the cores
    10.
    发明授权
    Multiple-core optical fiber with coupling between the cores 有权
    多芯光纤与芯之间具有耦合

    公开(公告)号:US07853107B2

    公开(公告)日:2010-12-14

    申请号:US12435294

    申请日:2009-05-04

    IPC分类号: G02B6/032

    摘要: An optical fiber includes a cladding, a first core, and a second core. At least one of the first core and the second core is hollow and is substantially surrounded by the cladding. At least a portion of the first core is generally parallel to and spaced from at least a portion of the second core. The optical fiber includes a defect substantially surrounded by the cladding, the defect increasing a coupling coefficient between the first core and the second core.

    摘要翻译: 光纤包括包层,第一芯和第二芯。 第一芯和第二芯中的至少一个是中空的并且基本上被包层包围。 第一芯的至少一部分通常与第二芯的至少一部分平行并间隔开。 光纤包括基本上被包层围绕的缺陷,缺陷增加了第一芯和第二芯之间的耦合系数。