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    Multimode long period fiber bragg grating machined by ultrafast laser direct writing
    2.
    发明授权
    Multimode long period fiber bragg grating machined by ultrafast laser direct writing 失效
    通过超快激光直接写入加工的多模长周期光纤布拉格光栅

    公开(公告)号：US07376307B2

    公开(公告)日：2008-05-20

    申请号：US10976524

    申请日：2004-10-29

    申请人： Rajminder Singh ,  Ming Li ,  Jimmy Yi-Jie Jia ,  Xinbing Liu ,  Tetsuo Ohara

    发明人： Rajminder Singh ,  Ming Li ,  Jimmy Yi-Jie Jia ,  Xinbing Liu ,  Tetsuo Ohara

    IPC分类号： G02B6/34

    CPC分类号： G02B6/02095 ,  G02B6/02085 ,  G02B6/02147 ,  G02B2006/0209 ,  H01S5/12 ,  H01S5/141 ,  H01S5/4068

    摘要： A multimode long period fiber Bragg grating (LPFBG) for a predetermined wavelength band. The LPFBG formed of a non-photosensitive material having an initial index of refraction. The multimode optical fiber core includes a substantially cylindrical surface, a longitudinal core axis, a core radius, and a number of index-altered portions having an altered index of refraction different from the initial cladding index of refraction. Each of the index-altered multimode optical fiber core has a first transmission surface and second transmission surface that is substantially parallel to the first transmission surface. Also, these index-altered portions are arranged within the non-photosensitive material of the multimode optical fiber core such that the first transmission surface of one portion of the plurality of index-altered portions is substantially parallel to the second transmission surface of a neighboring portion to form a long period Bragg grating structure.

    摘要翻译： 用于预定波长带的多模长周期光纤布拉格光栅（LPFBG）。 LPFBG由具有初始折射率折射率的非感光材料形成。 多模光纤芯包括具有与初始包层折射率不同的改变的折射率的基本圆柱形表面，纵向芯轴，芯半径和多个折射率改变部分。 每个索引改变的多模光纤芯具有基本上平行于第一传输表面的第一传输表面和第二传输表面。 此外，这些折射率改变部分布置在多模光纤芯的非感光材料内，使得多个折射率改变部分中的一部分的第一透射表面基本上平行于相邻部分的第二透射表面 形成长周期布拉格光栅结构。

    Ultrafast laser machining system and method for forming diffractive structures in optical fibers
    3.
    发明授权
    Ultrafast laser machining system and method for forming diffractive structures in optical fibers 失效
    超快激光加工系统及在光纤中形成衍射结构的方法

    公开(公告)号：US07532791B2

    公开(公告)日：2009-05-12

    申请号：US12044387

    申请日：2008-03-07

    申请人： Jimmy Yi-Jie Jia ,  Ming Li ,  Rajminder Singh ,  Xinbing Liu ,  Tetsuo Ohara

    发明人： Jimmy Yi-Jie Jia ,  Ming Li ,  Rajminder Singh ,  Xinbing Liu ,  Tetsuo Ohara

    IPC分类号： G02B6/34

    CPC分类号： B23K26/04 ,  B23K26/03 ,  B23K26/032 ,  B23K26/043 ,  B23K26/0624 ,  B23K26/0665 ,  B23K26/0823 ,  B23K26/083 ,  G02B6/02123

    摘要： An ultrafast laser machining system and method to form diffractive structures in optical fibers. The fiber is mounted with its longitudinal axis perpendicular to the beam path of the laser pulses. A region of the fiber is illuminated and then imaged with two cameras. These cameras are aligned substantially orthogonally. A position of the beam spot is determined. The beam spot is aligned to a starting position within the region. This position is within a portion of the fiber to be machined for which the beam path passes through the greatest length of material. The beam spot is scanned along a path designed to pass the beam spot through all of the portion to be machined such that the beam path does not pass through previously machined material. The laser pulses, which have a duration of less than about 1 ns, are generated as the beam spot is scanned.

    摘要翻译： 一种用于在光纤中形成衍射结构的超快速激光加工系统和方法。 光纤安装成其纵轴垂直于激光脉冲的光束路径。 光纤的一个区域被照亮，然后用两个相机成像。 这些相机基本正交对准。 确定束斑的位置。 束斑与该区域内的起始位置对准。 该位置在待加工的纤维的一部分内，光束路径通过其中最长的材料长度。 光束点沿着设计成使光束点通过所有被加工部分的路径被扫描，使得光束路径不通过预先加工的材料。 当扫描光束点时，产生持续时间小于约1ns的激光脉冲。

    ULTRAFAST LASER MACHINING SYSTEM AND METHOD FOR FORMING DIFFRACTIVE STRUCTURES IN OPTICAL FIBERS
    4.
    发明申请
    ULTRAFAST LASER MACHINING SYSTEM AND METHOD FOR FORMING DIFFRACTIVE STRUCTURES IN OPTICAL FIBERS 失效
    超光激光加工系统及在光纤中形成衍射结构的方法

    公开(公告)号：US20080273836A1

    公开(公告)日：2008-11-06

    申请号：US12044387

    申请日：2008-03-07

    申请人： Jimmy Yi-Jie Jia ,  Ming Li ,  Rajminder Singh ,  Xinbing Liu ,  Tetsuo Ohara

    发明人： Jimmy Yi-Jie Jia ,  Ming Li ,  Rajminder Singh ,  Xinbing Liu ,  Tetsuo Ohara

    IPC分类号： G02B6/34

    CPC分类号： B23K26/04 ,  B23K26/03 ,  B23K26/032 ,  B23K26/043 ,  B23K26/0624 ,  B23K26/0665 ,  B23K26/0823 ,  B23K26/083 ,  G02B6/02123

    摘要： An ultrafast laser machining system and method to form diffractive structures in optical fibers. The fiber is mounted with its longitudinal axis perpendicular to the beam path of the laser pulses. A region of the fiber is illuminated and then imaged with two cameras. These cameras are aligned substantially orthogonally. A position of the beam spot is determined. The beam spot is aligned to a starting position within the region. This position is within a portion of the fiber to be machined for which the beam path passes through the greatest length of material. The beam spot is scanned along a path designed to pass the beam spot through all of the portion to be machined such that the beam path does not pass through previously machined material. The laser pulses, which have a duration of less than about 1 ns, are generated as the beam spot is scanned.

    摘要翻译： 一种用于在光纤中形成衍射结构的超快速激光加工系统和方法。 光纤安装成其纵轴垂直于激光脉冲的光束路径。 光纤的一个区域被照亮，然后用两个相机成像。 这些相机基本正交对准。 确定束斑的位置。 束斑与该区域内的起始位置对准。 该位置在待加工的纤维的一部分内，光束路径通过其中最长的材料长度。 光束点沿着设计成使光束点通过所有被加工部分的路径被扫描，使得光束路径不通过预先加工的材料。 当扫描光束点时，产生持续时间小于约1ns的激光脉冲。

    MULTIMODE LONG PERIOD FIBER BRAGG GRATING MACHINED BY ULTRAFAST DIRECT WRITING
    6.
    发明申请
    MULTIMODE LONG PERIOD FIBER BRAGG GRATING MACHINED BY ULTRAFAST DIRECT WRITING 审中-公开
    超声波直接写入多功能长周期光纤布拉格

    公开(公告)号：US20080193085A1

    公开(公告)日：2008-08-14

    申请号：US12104082

    申请日：2008-04-16

    申请人： Rajminder Singh ,  Ming Li ,  Jimmy Yi-Jie-Jia ,  Xinbing Liu ,  Tetsuo Ohara

    发明人： Rajminder Singh ,  Ming Li ,  Jimmy Yi-Jie-Jia ,  Xinbing Liu ,  Tetsuo Ohara

    IPC分类号： G02B6/26

    CPC分类号： G02B6/02095 ,  G02B6/02085 ,  G02B6/02147 ,  G02B2006/0209 ,  H01S5/12 ,  H01S5/141 ,  H01S5/4068

    摘要： An optical fiber with an integral photonic crystal structure. The optical fiber core is formed of a non-photosensitive material having an initial index of refraction. The optical fiber core includes a substantially cylindrical surface, a longitudinal core axis, a core radius, and a number of index-altered portions having an altered index of refraction different from the initial cladding index of refraction. The index-altered portions are arranged within the non-photosensitive material of the optical fiber core to form a photonic crystal structure. The photonic crystal structure may be a one dimensional, a two dimensional, or a three dimensional photonic crystal structure.

    摘要翻译： 具有整体光子晶体结构的光纤。 光纤芯由具有初始折射率的非感光材料形成。 光纤芯包括基本上圆柱形的表面，纵向芯轴，芯半径以及具有与初始包层折射率不同的改变的折射率的多个折射率改变部分。 折射率改变部分布置在光纤芯的非感光材料内，以形成光子晶体结构。 光子晶体结构可以是一维，二维或三维光子晶体结构。

    Ultrafast laser machining system and method for forming diffractive structures in optical fibers
    7.
    发明授权
    Ultrafast laser machining system and method for forming diffractive structures in optical fibers 失效
    超快激光加工系统及在光纤中形成衍射结构的方法

    公开(公告)号：US07366378B2

    公开(公告)日：2008-04-29

    申请号：US11213412

    申请日：2005-08-26

    申请人： Jimmy Yi-Jie Jia ,  Ming Li ,  Rajminder Singh ,  Xinbing Liu ,  Tetsuo Ohara

    发明人： Jimmy Yi-Jie Jia ,  Ming Li ,  Rajminder Singh ,  Xinbing Liu ,  Tetsuo Ohara

    IPC分类号： G02B6/34

    CPC分类号： B23K26/04 ,  B23K26/03 ,  B23K26/032 ,  B23K26/043 ,  B23K26/0624 ,  B23K26/0665 ,  B23K26/0823 ,  B23K26/083 ,  G02B6/02123

    摘要： An ultrafast laser machining system and method to form diffractive structures in optical fibers. The fiber is mounted with its longitudinal axis perpendicular to the beam path of the laser pulses. A region of the fiber is illuminated and then imaged with two cameras. These cameras are aligned substantially orthogonally. A position of the beam spot is determined. The beam spot is aligned to a starting position within the region. This position is within a portion of the fiber to be machined for which the beam path passes through the greatest length of material. The beam spot is scanned along a path designed to pass the beam spot through all of the portion to be machined such that the beam path does not pass through previously machined material. The laser pulses, which have a duration of less than about 1 ns, are generated as the beam spot is scanned.

    摘要翻译： 一种用于在光纤中形成衍射结构的超快速激光加工系统和方法。 光纤安装成其纵轴垂直于激光脉冲的光束路径。 光纤的一个区域被照亮，然后用两个相机成像。 这些相机基本正交对准。 确定束斑的位置。 束斑与该区域内的起始位置对准。 该位置在待加工的纤维的一部分内，光束路径通过其中最长的材料长度。 光束点沿着设计成使光束点通过所有被加工部分的路径被扫描，使得光束路径不通过预先加工的材料。 当扫描光束点时，产生持续时间小于约1ns的激光脉冲。

    Multimode long period fiber Bragg grating machined by ultrafast laser direct writing
    8.
    发明申请
    Multimode long period fiber Bragg grating machined by ultrafast laser direct writing 失效
    多模长周期光纤布拉格光栅通过超快速激光直接写入加工

    公开(公告)号：US20060093012A1

    公开(公告)日：2006-05-04

    申请号：US10976524

    申请日：2004-10-29

    申请人： Rajminder Singh ,  Ming Li ,  Jimmy Yi-Jie Jia ,  Xinbing Liu ,  Tetsuo Ohara

    发明人： Rajminder Singh ,  Ming Li ,  Jimmy Yi-Jie Jia ,  Xinbing Liu ,  Tetsuo Ohara

    IPC分类号： H01S3/08

    CPC分类号： G02B6/02095 ,  G02B6/02085 ,  G02B6/02147 ,  G02B2006/0209 ,  H01S5/12 ,  H01S5/141 ,  H01S5/4068

    摘要： A multimode long period fiber Bragg grating (LPFBG) for a predetermined wavelength band. The LPFBG formed of a non-photosensitive material having an initial index of refraction. The multimode optical fiber core includes a substantially cylindrical surface, a longitudinal core axis, a core radius, and a number of index-altered portions having an altered index of refraction different from the initial cladding index of refraction. Each of the index-altered multimode optical fiber core has a first transmission surface and second transmission surface that is substantially parallel to the first transmission surface. Also, these index-altered portions are arranged within the non-photosensitive material of the multimode optical fiber core such that the first transmission surface of one portion of the plurality of index-altered portions is substantially parallel to the second transmission surface of a neighboring portion to form a long period Bragg grating structure.

    摘要翻译： 用于预定波长带的多模长周期光纤布拉格光栅（LPFBG）。 LPFBG由具有初始折射率折射率的非感光材料形成。 多模光纤芯包括具有与初始包层折射率不同的改变的折射率的基本圆柱形表面，纵向芯轴，芯半径和多个折射率改变部分。 每个索引改变的多模光纤芯具有基本上平行于第一传输表面的第一传输表面和第二传输表面。 此外，这些折射率改变部分被布置在多模光纤芯的非感光材料内，使得多个折射率改变部分中的一部分的第一透射表面基本上平行于相邻部分的第二透射表面 形成长周期布拉格光栅结构。

    Ultrafast laser machining system and method for forming diffractive structures in optical fibers
    9.
    发明申请
    Ultrafast laser machining system and method for forming diffractive structures in optical fibers 失效
    超快激光加工系统及在光纤中形成衍射结构的方法

    公开(公告)号：US20060093265A1

    公开(公告)日：2006-05-04

    申请号：US11213412

    申请日：2005-08-26

    申请人： Jimmy Jia ,  Ming Li ,  Rajminder Singh ,  Xinbing Liu ,  Tetsuo Ohara

    发明人： Jimmy Jia ,  Ming Li ,  Rajminder Singh ,  Xinbing Liu ,  Tetsuo Ohara

    IPC分类号： G02B6/34

    CPC分类号： B23K26/04 ,  B23K26/03 ,  B23K26/032 ,  B23K26/043 ,  B23K26/0624 ,  B23K26/0665 ,  B23K26/0823 ,  B23K26/083 ,  G02B6/02123

    摘要： An ultrafast laser machining system and method to form diffractive structures in optical fibers. The fiber is mounted with its longitudinal axis perpendicular to the beam path of the laser pulses. A region of the fiber is illuminated and then imaged with two cameras. These cameras are aligned substantially orthogonally. A position of the beam spot is determined. The beam spot is aligned to a starting position within the region. This position is within a portion of the fiber to be machined for which the beam path passes through the greatest length of material. The beam spot is scanned along a path designed to pass the beam spot through all of the portion to be machined such that the beam path does not pass through previously machined material. The laser pulses, which have a duration of less than about ins, are generated as the beam spot is scanned.

    摘要翻译： 一种用于在光纤中形成衍射结构的超快速激光加工系统和方法。 光纤安装成其纵轴垂直于激光脉冲的光束路径。 光纤的一个区域被照亮，然后用两个相机成像。 这些相机基本正交对准。 确定束斑的位置。 束斑与该区域内的起始位置对准。 该位置在待加工的纤维的一部分内，光束路径通过其中最长的材料长度。 光束点沿着设计成使光束点通过所有被加工部分的路径被扫描，使得光束路径不通过预先加工的材料。 当扫描光束点时，产生具有小于约ins的持续时间的激光脉冲。

    Fiber coating processing and slitting for non-confined light leakage
    10.
    发明申请
    Fiber coating processing and slitting for non-confined light leakage 有权
    光纤涂层处理和切割非限制性的漏光

    公开(公告)号：US20070065083A1

    公开(公告)日：2007-03-22

    申请号：US11228368

    申请日：2005-09-16

    申请人： Rajminder Singh

    发明人： Rajminder Singh

    IPC分类号： G02B6/036 ,  G02B6/02 ,  C03B37/023

    CPC分类号： G02B6/001

    摘要： An optical fiber and methods of processing and manufacturing an optical fiber comprising a core, a cladding and a coating covering a segment of the cladding proximate to an end of the optical fiber are presented where patterned apertures are provided in the coating such that a portion of light propagating in the cladding escapes through the patterned apertures of the coating. The patterned apertures allow non-confined light to escape from the cladding in the coating region to provide reduced absorption of the non-confined light by the coating.

    摘要翻译： 一种光纤和加工和制造光纤的方法，其中包括芯，包层和覆盖光纤的端部附近的包层的涂层的光纤，其中在涂层中提供图案化的孔，使得一部分 在包层中传播的光通过涂层的图案化孔径逸出。 图案化的孔允许非限制的光从包覆区域中的包层逸出，以通过涂层减少对非限制光的吸收。