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1. 发明申请

WO2014120610A1 OPTICAL WAVEGUIDE WITH INTEGRATED HOLOGRAM 审中-公开
标题翻译：光学波导与集成的霍尔格勒
公开(公告)号：WO2014120610A1
公开(公告)日：2014-08-07
申请号：PCT/US2014/013203
申请日：2014-01-27
申请人： OFS FITEL, LLC , AARHUS UNIVERSITY
发明人： GRUNER-NIELSEN, Lars , SAVOLAINEN, Juha-matti
IPC分类号： G02B5/32 , G03H1/26
CPC分类号： G02B5/32 , G02B6/0015 , G02B6/0035 , G02B6/02314 , G02B6/14 , G02B27/0944 , G02B27/0994 , G03H1/0272 , G03H2270/20 , G03H2270/32
摘要： An optical waveguide comprising an axial direction and a cross-section perpendicular to said axial direction is shown. The optical waveguide comprises a core region. The core region includes an integrally formed hologram, which extends along a first axial segment of the optical waveguide, the first axial segment having a first axial length. The hologram, seen in the cross-section, includes a micro-structure with written elements having a modified refractive index different from areas of the core region with an unmodified refractive index.
摘要翻译：示出了包括轴向方向和垂直于所述轴向方向的横截面的光波导。光波导包括芯区域。芯区域包括沿着光波导的第一轴向段延伸的整体形成的全息图，第一轴向段具有第一轴向长度。在横截面中看到的全息图包括具有不同于具有未改变折射率的芯区域的区域的修改的折射率的书写元件的微结构。

2. 发明申请

WO2013131076A1 HIGHLY NONLINEAR OPTICAL FIBER WITH IMPROVED SBS THRESHOLD AND MODERATE ATTENUATION 审中-公开
标题翻译：具有改进的SBS阈值和较低衰减的高度非线性光纤
公开(公告)号：WO2013131076A1
公开(公告)日：2013-09-06
申请号：PCT/US2013/028816
申请日：2013-03-04
申请人： OFS FITEL, LLC
发明人： GRUNER-NIELSEN, Lars , HERSTROM, Soren , JAKOBSEN, Dan, Peter , PALSDOTTIR, Bera
IPC分类号： G02B6/028
CPC分类号： G02B6/028 , G02B6/03627 , G02B2006/12061 , G02F1/365
摘要： A highly nonlinear optical fiber having an improved stimulated Brillouin scattering threshold is provided. The fiber includes a central core region made substantially from silica doped with aluminum, a trench region surrounding the central core region, and a silica cladding surrounding the trench region. The refractive index profile of the fiber is optimized. A refractive index difference of the central core region relative to the cladding (Δn+) is less than 26 x 10 -3 , and more preferably at or near 21 x 10 -3 . A refractive index difference of the trench region relative to the cladding (Δn-) is less than -5 x 10". The trench region is preferably doped with fluorine. The aluminum doping level of the central core region is preferably less than 14 wt% A1. A fiber doped with aluminum having this refractive index profile exhibits a significantly higher figure of merit (P thƳ L eff ) than conventional germanium-doped fibers.
摘要翻译：提供了具有改进的受激布里渊散射阈值的高度非线性的光纤。纤维包括基本上由掺杂有铝的二氧化硅制成的中心芯区域，围绕中心芯区域的沟槽区域和围绕沟槽区域的二氧化硅覆层。纤维的折射率分布优化。中心芯区域相对于包层（Deltan +）的折射率差小于26×10 -3，更优选为21×10 -3或接近21×10 -3。沟槽区域相对于包层（Deltan-）的折射率差小于-5×10“，沟槽区域优选用氟掺杂，中心核心区域的铝掺杂水平优选小于14重量％ A1。掺有铝的具有该折射率分布的光纤比常规锗掺杂光纤具有显着更高的品质因数（PthƳLeff）。

3. 发明申请

WO2012161809A1 GRADED-INDEX FEW-MODE FIBER DESIGNS FOR SPATIAL MULTIPLEXING 审中-公开
标题翻译：用于空间多路复用的分级索引模式光纤设计
公开(公告)号：WO2012161809A1
公开(公告)日：2012-11-29
申请号：PCT/US2012/026662
申请日：2012-02-24
申请人： OFS FITEL, LLC , GRUNER-NIELSEN, Lars , LINGLE, Robert, L. , MCCURDY, Alan , PECKHAM, David, W. , SUN, Yi
发明人： GRUNER-NIELSEN, Lars , LINGLE, Robert, L. , MCCURDY, Alan , PECKHAM, David, W. , SUN, Yi
IPC分类号： G02B6/02
CPC分类号： G02B6/02042 , G02B6/02 , G02B6/02019 , G02B6/0281 , G02B6/0288 , G02B6/03611 , G02B6/03627 , G02B6/03633 , G02B6/0365 , G02B6/03666 , G02B6/03683 , G02B6/262
摘要： A few-mode optical fiber comprises a core surrounded by a cladding, having a graded index profile that is structured to support propagation of a plurality of desired signal-carrying modes, while suppressing undesired modes. The core and cladding are configured such that the undesired modes have respective effective indices that are close to. or less than, the cladding index such that the undesired modes are leaky modes. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.
摘要翻译：多模光纤包括由包层围绕的芯，具有渐变的折射率分布，其被构造为支持多个期望的信号承载模式的传播，同时抑制不期望的模式。芯和覆层被配置为使得不期望的模式具有接近的相应的有效索引。或小于包层指数，使得不需要的模式是泄漏模式。具有最低有效指数的期望模式与具有最高有效指数的泄漏模式之间的指数间隔足够大，以便基本上防止它们之间的耦合。

4. 发明申请

WO2013126616A1 OPTICAL MODE CONVERSION USING INTERMODAL CHERENKOV RADIATION 审中-公开
标题翻译：光学模式转换使用间接CHERENKOV辐射
公开(公告)号：WO2013126616A1
公开(公告)日：2013-08-29
申请号：PCT/US2013/027199
申请日：2013-02-21
申请人： OFS FITEL, LLC , CORNELL UNIVERSITY
发明人： GRUNER-NIELSEN, Lars , XU, Chunhui , PEDERSEN, Martin Erland, Vestergaard , CHENG, Ji
IPC分类号： H01S3/10
CPC分类号： G02F1/3536 , G02B6/0288 , G02B6/14 , G02F1/35 , G02F1/3544 , G02F1/365 , G02F2001/374
摘要： Embodiments of the present invention generally relate to optical mode conversion using intermodal Cherenkov radiation. More specifically, embodiments of the present invention relate to optical mode conversion utilizing intermodal four-wave mixing to convert light between modes for complex applications, whereby one of the four waves is generated from Cherenkov radiation. In one embodiment of the present invention, a fiber comprises an input end for receiving light in a first mode at a first wavelength, and an output end for outputting light in a desired second mode at a desired second wavelength; wherein the desired second mode is controlled deforming the fiber, such as by bending, during an intermodal Cherenkov radiation process.
摘要翻译：本发明的实施例一般涉及使用联运切伦科夫辐射的光学模式转换。更具体地，本发明的实施例涉及利用联合四波混频以在复杂应用的模式之间转换光的光模式转换，由此从切伦科夫辐射产生四个波中的一个。在本发明的一个实施例中，光纤包括用于以第一波长接收第一模式的光的输入端和用于以期望的第二波长以期望的第二模式输出光的输出端; 其中所需的第二模式被控制，在多模式切伦科夫辐射过程中，例如通过弯曲使纤维变形。

5. 发明申请

WO2012161810A1 STEP-INDEX FEW-MODE FIBER DEIGNS FOR SPATIAL MULTIPLEXING 审中-公开
标题翻译：用于空间多路复用的步骤指示模式光纤检测
公开(公告)号：WO2012161810A1
公开(公告)日：2012-11-29
申请号：PCT/US2012/026663
申请日：2012-02-24
申请人： OFS FITEL, LLC , GRUNER-NIELSEN, Lars , LINGLE, Robert, L. , MCCURDY, Alan , PECKHAM, David, W. , TOKLE, Torger
发明人： GRUNER-NIELSEN, Lars , LINGLE, Robert, L. , MCCURDY, Alan , PECKHAM, David, W. , TOKLE, Torger
IPC分类号： G02B6/02
CPC分类号： G02B6/02042 , G02B6/02 , G02B6/02019 , G02B6/0281 , G02B6/0288 , G02B6/03611 , G02B6/03627 , G02B6/03633 , G02B6/0365 , G02B6/03666 , G02B6/03683 , G02B6/262
摘要： A few-mode optical fiber comprises a core surrounded by a cladding, having a step index profile that is structured to support propagation of a plurality of desired signal-carrying modes, while suppressing undesired modes. The core and cladding are configured such that the undesired modes have respective effective indices that are close to. or less than, the cladding index such that the undesired modes are leaky modes. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.
摘要翻译：多模光纤包括由包层围绕的芯，其具有构造成支持多种所需信号承载模式的传播的阶跃折射率分布，同时抑制不期望的模式。芯和覆层被配置为使得不期望的模式具有接近的相应的有效索引。或小于包层指数，使得不需要的模式是泄漏模式。具有最低有效指数的期望模式与具有最高有效指数的泄漏模式之间的指数间隔足够大，以便基本上防止它们之间的耦合。

6. 发明申请

WO2013101429A1 OPTICAL MODE CONVERSION BY NONLINEAR EFFECTS 审中-公开
标题翻译：非线性效应的光学模式转换
公开(公告)号：WO2013101429A1
公开(公告)日：2013-07-04
申请号：PCT/US2012/068259
申请日：2012-12-06
申请人： OFS FITEL, LLC , CORNELL UNIVERSITY , GRUNER-NIELSEN, Lars , JAKOBSEN, Dan, P. , PEDERSEN, Martin, E.V. , XU, Chunhui , CHENG, Ji
发明人： GRUNER-NIELSEN, Lars , JAKOBSEN, Dan, P. , PEDERSEN, Martin, E.V. , XU, Chunhui , CHENG, Ji
IPC分类号： G02F2/00
CPC分类号： G02B6/14 , G02F1/3536 , G02F1/365 , G02F2201/02 , G02F2201/05
摘要： Embodiments of the present invention generally relate to optical mode conversion by nonlinear effects. More specifically, embodiments of the present invention relate to nonlinear mode conversion utilizing intermodal four-wave mixing to convert light between modes having different wavelengths for complex applications. In one embodiment of the present invention, a fiber comprises an input end for receiving light in a first mode at a first wavelength, and an output end for outputting light in a desired second mode at a desired second wavelength, wherein the first wavelength and the second wavelength are not the same. In many embodiments, the fiber comprises a higher-order mode fiber.
摘要翻译：本发明的实施例一般涉及通过非线性效应的光学模式转换。更具体地，本发明的实施例涉及利用联合四波混频以在复杂应用中具有不同波长的模式之间转换光的非线性模式转换。在本发明的一个实施例中，光纤包括用于以第一波长接收第一模式的光的输入端和用于以期望的第二波长以期望的第二模式输出光的输出端，其中第一波长和第二波长不一样。在许多实施例中，光纤包括高阶模式光纤。

7. 发明申请

WO2013006868A2 NON-LINEAR FIBER RESISTANT TO PERTURBATIONS 审中-公开
标题翻译：非线性纤维抵抗刺激
公开(公告)号：WO2013006868A2
公开(公告)日：2013-01-10
申请号：PCT/US2012/045993
申请日：2012-07-09
申请人： OFS FITEL, LLC , FINI, John, M. , GRUNER-NIELSEN, Lars , JAKOBSEN, Dan, P.
发明人： FINI, John, M. , GRUNER-NIELSEN, Lars , JAKOBSEN, Dan, P.
IPC分类号： G02B6/028
CPC分类号： G02F1/365 , G02B6/02028 , G02B6/02214 , G02B6/028 , G02B6/03638 , G02B6/0365
摘要： Embodiments of the present invention relate to a fiber design that achieves high nonlinearity, an effective index providing phase matching for an illustrative wavelength conversion process, and a low sensitivity to perturbations in fiber scaling. In one embodiment, a fiber comprises an inner core having an inner core radius and an inner core index, an outer core having an outer core radius and an outer core index, the outer core index being lower than the inner core index, an inner cladding, having an inner cladding radius and an inner cladding index, the inner cladding index being less than the outer core index, and an effective index of the fiber, the effective index being greater than the inner cladding index and less than the outer core index, wherein the fiber has a low perturbation sensitivity factor of dispersion to scaling less than about 20 ps/ nm / km along the length of the fiber.
摘要翻译：本发明的实施例涉及实现高非线性的光纤设计，提供用于说明性波长转换处理的相位匹配的有效索引，以及对光纤缩放中的扰动的低灵敏度。在一个实施例中，纤维包括具有内芯半径和内芯索引的内芯，外芯具有外芯半径和外芯索引，外芯索引低于内芯索引，内包层具有内包层半径和内包层指数，所述内包层指数小于所述外包芯指数，以及所述纤维的有效折射率，所述有效折射率大于所述内包层指数并小于所述外包芯指数，其中所述光纤具有较低的扰动灵敏度因子，其沿着所述光纤长度的缩放小于约20ps / nm / km。

8. 发明申请

WO2013023045A1 FIBER ASSEMBLY FOR ALL-FIBER DELIVERY OF HIGH ENERGY FEMTOSECOND PULSES 审中-公开
标题翻译：用于全光纤传输高能量有限元脉冲的光纤组件
公开(公告)号：WO2013023045A1
公开(公告)日：2013-02-14
申请号：PCT/US2012/050126
申请日：2012-08-09
申请人： OFS FITEL, LLC , JESPERSON, Kim , GRUNER-NIELSEN, Lars
发明人： JESPERSON, Kim , GRUNER-NIELSEN, Lars
IPC分类号： G02B6/26
CPC分类号： H01S3/2308 , G02B6/4296 , H01S3/0057 , H01S3/06725 , H01S3/06741 , H01S3/0804 , H01S3/1611 , H01S3/1618
摘要： Embodiments of the present invention are generally related to a fiber assembly, for example, in a chirped pulse amplification system, for all-fiber delivery of high energy femtosecond pulses. More specifically, embodiments of the present invention relate to a system and method for improving dispersion management when using hollow core photonic bandgap fibers for pulse compression. In one embodiment of the present invention, a fiber assembly comprises: an optical laser oscillator; a first fiber section for stretching the pulses from the laser oscillator, the first fiber section comprising a high order mode fiber; and a second fiber section for compressing the stretched pulses, connected to the first fiber section via a splice, the second fiber section comprising a hollow core photonic bandgap fiber; wherein the fiber assembly outputs a pulse compression at less than 200 fs.
摘要翻译：本发明的实施例通常涉及光纤组件，例如在啁啾脉冲放大系统中，用于全光纤输送高能飞秒脉冲。更具体地，本发明的实施例涉及一种用于在使用空心光子带隙光纤进行脉冲压缩时改进色散管理的系统和方法。在本发明的一个实施例中，光纤组件包括：光学激光振荡器; 用于从激光振荡器拉伸脉冲的第一光纤部分，第一光纤部分包括高阶模光纤; 以及第二纤维部分，用于压缩经由接头连接到第一纤维部分的拉伸脉冲，第二纤维部分包括中空光子带隙光纤; 其中所述光纤组件以小于200fs输出脉冲压缩。

9. 发明申请

WO2013003863A3 METHOD OF REDUCING THE MODAL GROUP DELAY IN A MULTIMODE TRANSMISSION SYSTEM 审中-公开
公开(公告)号：WO2013003863A3
公开(公告)日：2013-01-03
申请号：PCT/US2012/045323
申请日：2012-07-02
申请人： OFS FITEL, LLC , GRUNER-NIELSEN, Lars , JANSEN, Sander , KRISTENSEN, Poul , VAN DEN BORNE, Dirk
发明人： GRUNER-NIELSEN, Lars , JANSEN, Sander , KRISTENSEN, Poul , VAN DEN BORNE, Dirk
IPC分类号： G01R31/08
摘要： Systems and methods for reducing modal group delay when transmitting a plurality of optical signals over a transmission line that supports a plurality of modes are disclosed. The modes are converted at a plurality of positions along the transmission line so the signals in the end have minimal group delay. The method comprises the steps of receiving N number of optical signals into a multimode fiber having at least N modes, transmitting each of N signals into a mode of the at least N modes of the multimode fiber, and converting each of the N modes into another of the N modes at N positions along the transmission line, such that the net modal group delay generated between the N signals along the transmission line is minimized.

10. 发明申请

WO2013052968A1 FIBER DESIGNS FOR WAVELENGTH TUNABLE ULTRA-SHORT PULSE LASERS 审中-公开
标题翻译：光纤设计用于波长超短脉冲激光器
公开(公告)号：WO2013052968A1
公开(公告)日：2013-04-11
申请号：PCT/US2012/059386
申请日：2012-10-09
申请人： OFS FITEL, LLC , CORNELL UNIVERSITY , GRUNER-NIELSEN, Lars , JAKOBSEN, Dan, P. , PEDERSEN, Martin, E.v. , XU, Chris , CHENG, Ji
发明人： GRUNER-NIELSEN, Lars , JAKOBSEN, Dan, P. , PEDERSEN, Martin, E.v. , XU, Chris , CHENG, Ji
IPC分类号： G02B6/26
CPC分类号： H01S3/067 , G02B6/03688 , G02B6/14 , H01S3/0057 , H01S3/06716 , H01S3/0675 , H01S3/0804 , H01S2301/085
摘要： Embodiments of the present invention generally relate to fiber designs for wavelength tunable ultra-short pulse lasers. More specifically, embodiments of the present invention relate to systems incorporating fiber designs for higher order mode fibers capable of soliton self frequency shifting where a system comprises a first fiber for shifting the wavelength from a pump wavelength to a transfer wavelength and a second fiber for shifting the pulse from the transfer wavelength to an output wavelength. In one embodiment of the present invention, a wavelength tunable short pulse fiber laser system comprises: a pulse generator for providing a pulse having an input wavelength; a mode-converter; a first designed fiber for shifting the pulse from the input wavelength to a transfer wavelength; and a second designed fiber for shifting the pulse from the transfer wavelength to an output wavelength.
摘要翻译：本发明的实施例一般涉及用于波长可调超短脉冲激光器的光纤设计。更具体地，本发明的实施例涉及将光纤设计结合到具有能够进行孤子自移频的高阶模式光纤的系统，其中系统包括用于将波长从泵浦波长移位到传输波长的第一光纤和用于移位的第二光纤从转移波长到输出波长的脉冲。在本发明的一个实施例中，波长可调短脉冲光纤激光系统包括：脉冲发生器，用于提供具有输入波长的脉冲; 模式转换器用于将脉冲从输入波长移位到转移波长的第一设计光纤; 以及用于将脉冲从转移波长移位到输出波长的第二设计光纤。

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