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81. 发明申请

US20080095199A1 Method and Apparatus for Providing Light Having a Selected Polarization With an Optical Fiber 有权
标题翻译：提供具有光纤选择极化的光的方法和装置
公开(公告)号：US20080095199A1
公开(公告)日：2008-04-24
申请号：US10597592
申请日：2005-01-31
申请人： Jaroslaw Abramczyk
发明人： Jaroslaw Abramczyk
IPC分类号： H01S3/30
CPC分类号： G02B6/14 , G02B6/024 , G02B6/105 , H01S3/06712 , H01S3/06729 , H01S3/0675 , H01S3/094007 , H01S3/0941 , H01S3/1618
摘要： Optical apparatus (110, 500, 600, 800, 1000) for providing light having a selected linear polarization having a polarization ratio, the apparatus (110, 500, 600, 800, 1000) comprising a length of optical fiber (120, 504, 604, 804, 1001) comprising a rare earth for providing light having a first wavelength responsive to receiving pump light having a second wavelength that is different than said first wavelength, wherein if the length of optical fiber (120, 504, 604, 804, 1004) were placed in a first position between the length of fiber (120, 504, 604, 804, 1004) is substantially linearly oriented (20) the fiber (120, 504, 604, 804, 1004) could propagate at the first wavelength a fundamental mode and a plurality of higher order modes and the apparatus (110, 500, 600, 800, 1000) could provide light having a first polarization ratio for the selected linear polarization and an M2 parameter, and wherein the length of fiber (120, 504, 604, 804, 1004) is positioned in a second position that increases the bend loss of the fiber relative to the first position such that, responsive to the increased bend loss, the apparatus (110,500, 600, 800, 1000) can provide light having a reduced M2parameter as well as a second polarization ratio for the selected polarization that is increased relative to the first polarization ratio, the increase being at least 6 dB greater than the first polarization ratio, and wherein when the length of fiber (120, 504, 604, 804, 1004) is in the second position the apparatus (110, 500, 600, 800, 1000) can provide a slope efficiency that is at least 50% of the ratio of the second wavelength to the first wavelength.
摘要翻译：用于提供具有偏振比的所选线性偏振光的光学装置（110,500,600,800,1000），所述装置（110,500,600,800,1000）包括一段长度的光纤（120,504，包括稀土，用于提供响应于接收具有不同于所述第一波长的第二波长的泵浦光的具有第一波长的光，其中如果光纤的长度（120,504,604,801， 1004）被放置在光纤（120,504,604,804,1004）的长度之间的第一位置，基本上线性地定向（20），光纤（120,504,604,804,1004）可以在第一波长处传播基本模式和多个高阶模式，并且所述装置（110,500,600,800,1000）可以提供具有用于所选择的线性偏振的第一偏振比的光和M 2参数，并且其中定位纤维的长度（120,504,604,804,1004）在第二位置中，增加光纤相对于第一位置的弯曲损耗，使得响应于增加的弯曲损耗，设备（110,500,600,800,1000）可以提供具有减小的M 2的光， / SUP>参数以及相对于第一偏振比增加的所选偏振的第二偏振比，该增加比第一偏振比大至少6dB，并且其中当光纤的长度（120,504），604,804,1004）处于第二位置，装置（110,500,600,800,1000）可以提供至少50％的第二波长与第一波长的比率的斜率效率。

82. 发明授权

US07277610B2 Optical fiber and system containing same 有权
标题翻译：光纤和含有相同的系统
公开(公告)号：US07277610B2
公开(公告)日：2007-10-02
申请号：US10714524
申请日：2003-11-14
申请人： Andrey A. Demidov , Hong Po
发明人： Andrey A. Demidov , Hong Po
IPC分类号： G02B6/34
CPC分类号： H01S3/0675 , H01S3/06758 , H01S3/10023 , H01S3/302 , H04B10/2916
摘要： Optical fibers (e.g., fiber amplifiers and fiber lasers), and systems containing optical fibers (e.g., fiber amplifier systems and fiber laser systems) are disclosed.
摘要翻译：公开了光纤（例如，光纤放大器和光纤激光器）和包含光纤的系统（例如光纤放大器系统和光纤激光器系统）。

83. 发明授权

US07167621B2 Optical fiber with suppressed stimulated Brillouin scattering and method for making such a fiber 有权
标题翻译：抑制受激布里渊散射的光纤和制造这种光纤的方法
公开(公告)号：US07167621B2
公开(公告)日：2007-01-23
申请号：US10981437
申请日：2004-11-03
申请人： Upendra H. Manyam , Kanishka Tankala , Nils Jacobson
发明人： Upendra H. Manyam , Kanishka Tankala , Nils Jacobson
IPC分类号： G02B6/02 , G02B6/00
CPC分类号： G02B6/02 , C03B37/02718 , C03B37/02727 , C03B37/02745 , C03B2203/18 , C03B2203/19 , C03B2205/06 , C03B2205/20 , C03B2205/56 , G02B6/02052
摘要： An optical fiber for the transmission of electromagnetic energy, where the fiber can have increased input power threshold for the onset of Stimulated Brillouin Scattering (SBS). The fiber can comprise a core and a cladding disposed about the core. The core can have a distribution of velocities for an acoustic wave associated with SBS, where the distribution of propagation velocities of the core for the acoustic wave is at least one of a) azimuthally asymmetric or b) non-constant in an azimuthal plane and longitudinally asymmetric. The fiber can be longitudinally asymmetric wherein the core includes a first portion having a propagation velocity for the acoustic wave that is substantially the same throughout interposed between longitudinally spaced portions each having a propagation velocity different than that of said first portion. Methods, such as, for example, methods for fabricating and/or using a fiber having an increased threshold input power for the onset of SBS, are also disclosed.
摘要翻译：用于传输电磁能的光纤，其中光纤可以具有增加的刺激布里渊散射（SBS）开始的输入功率阈值。纤维可以包括围绕芯部设置的芯和包层。核心可以具有与SBS相关联的声波的速度分布，其中用于声波的芯的传播速度的分布是以下中的至少一个：方位角平面中的方位角不对称或b）非常数和纵向不对称。纤维可以是纵向不对称的，其中芯包括具有声波的传播速度的第一部分，该第一部分在插入纵向间隔的部分之间基本上相同，每个部分的传播速度不同于所述第一部分的传播速度。还公开了诸如用于制造和/或使用具有增加的用于SBS开始的阈值输入功率的光纤的方法。

84. 发明申请

US20060245714A1 Fiber optic article including fluorine 审中-公开
公开(公告)号：US20060245714A1
公开(公告)日：2006-11-02
申请号：US11453187
申请日：2006-06-13
申请人： Julia Farroni , Upendra Manyam , Nils Jacobson , Kanishka Tankala , Adrian Carter
发明人： Julia Farroni , Upendra Manyam , Nils Jacobson , Kanishka Tankala , Adrian Carter
IPC分类号： G02B6/02
CPC分类号： G02B6/105 , G02B6/02009 , G02B6/02033 , G02B6/024 , G02B6/03638 , G02B6/03661 , G02B6/03688 , G02B6/03694 , H01S3/06729 , H01S3/094007
摘要： A fiber optic article, such as an optical fiber or an optical preform, can include a core comprising a concentration of erbium, a concentration of fluorine and a concentration of ytterbium for sensitizing the erbium by absorbing pump light and transferring energy to the erbium. The erbium can provide light having a second wavelength different than the wavelength of the pump light. The article can also include a concentration of phosphorus. The fiber optic article can include a cladding disposed about the core, where the cladding has an index of refraction that is less than the index of refraction of the core, and a second cladding disposed about the first cladding, where the second cladding includes an index of refraction than is less than the index of refraction of the cladding. The fiber optic article can be elongate along a longitudinal axis and can include a longitudinally extending region for providing birefringence.

85. 发明申请

US20060198590A1 Fiber Optic Article with Inner Region 有权
标题翻译：内光纤光纤产品
公开(公告)号：US20060198590A1
公开(公告)日：2006-09-07
申请号：US11419907
申请日：2006-05-23
申请人： Julia Farroni , Upendra Manyam , Nils Jacobson , Kanishka Tankala , Adrian Carter
发明人： Julia Farroni , Upendra Manyam , Nils Jacobson , Kanishka Tankala , Adrian Carter
IPC分类号： G02B6/02
CPC分类号： G02B6/024
摘要： A fiber optic article can comprise a core, an inner region disposed about the core and a cladding disposed about the inner region. The index of refraction of the cladding can be less than that of the inner region, and the index of refraction of the inner region can be less than that of the core. The fiber can include a second cladding disposed about the cladding, where the second cladding has an index of refraction that is less than the index of refraction of the cladding. The inner region can have a non circular outer perimeter that includes at least one inwardly oriented section. The article can be elongate along a longitudinal axis and can include at least one longitudinally extending region, such as a stress inducing region, for providing birefringence and the inwardly oriented region can face the longitudinally extending region. The fiber optic article can include active material for providing light responsive to the article receiving pump light, such as, for example, one or more rare earths. The rare earths can include erbium and ytterbium.
摘要翻译：光纤制品可以包括芯，围绕芯设置的内部区域和围绕内部区域设置的包层。包层的折射率可以小于内部区域的折射率，并且内部区域的折射率可以小于芯部的折射率。纤维可以包括围绕包层设置的第二包层，其中第二包层的折射率小于包层的折射率。内部区域可以具有包括至少一个向内定向的部分的非圆形外周边。该制品可以沿纵向轴线延伸并且可以包括至少一个纵向延伸区域，例如应力诱导区域，用于提供双折射，并且向内取向区域可面向纵向延伸区域。光纤制品可以包括用于提供响应于物品接收泵浦光的光的活性材料，例如一个或多个稀土。稀土可以包括铒和镱。

86. 发明授权

US10879665B2 Optical amplifying systems and methods 有权
公开(公告)号：US10879665B2
公开(公告)日：2020-12-29
申请号：US15897900
申请日：2018-02-15
申请人： Nufern
发明人： Clemence Jollivet , Kevin Farley , Kanishka Tankala , John Edgecumbe
IPC分类号： H01S3/067 , H01S3/16 , H01S3/0941 , H01S3/094
CPC分类号： H01S3/06754 , H01S3/06733 , H01S3/0941 , H01S3/094007 , H01S3/094053 , H01S3/1616 , H01S3/1618 , H01S3/09408 , H01S3/09415 , H01S3/094011
摘要： The present disclosure relates to systems and methods for reducing thermal effects in double-clad clad optical fiber amplifying systems via control of the pump absorption. One optical fiber amplifying system for reducing thermal effects includes one or more first optical pump sources, each configured to output radiation of a pump wavelength, a bridge optical fiber, having an input configured to receive the radiation of the pump wavelength output by the one or more first optical pump sources and an output, and an active optical fiber that has a first end substantially directly coupled to the output of the bridge optical fiber and a second end. The active optical fiber is configured to amplify radiation of the first active wavelength when pumped with radiation of the pump wavelength.

87. 发明授权

US10630040B2 Mode mixing optical fibers and methods and systems using the same 有权
公开(公告)号：US10630040B2
公开(公告)日：2020-04-21
申请号：US16075573
申请日：2017-02-06
申请人： NUFERN
发明人： Clemence Jollivet , Kevin Farley , Jaroslaw Abramczyk , Michael Conroy , Kanishka Tankala , Peyman Ahmadi , Eric Lim
IPC分类号： H01S3/067 , G02B6/02 , G02B6/14 , H01S3/08 , C03B37/027 , G02B6/036 , G02B27/09 , H01S3/094
CPC分类号： H01S3/06708 , C03B37/027 , G02B6/02023 , G02B6/03633 , G02B6/03638 , G02B6/14 , H01S3/06729 , H01S3/0804 , G02B6/02042 , G02B27/0927 , H01S3/06733 , H01S3/06737 , H01S3/09408 , H01S3/094007
摘要： The present disclosure relates more to mode mixing optical fibers useful, for example in providing optical fiber laser outputs having a desired beam product parameter and beam profile. In one aspect, the disclosure provides a mode mixing optical fiber that includes a core having a refractive index profile; and a cladding disposed about the core. The core of the mode mixing optical fiber supports at least two (e.g., at least five) guided modes at the wavelength. The mode mixing optical fiber is configured to substantially distribute optical radiation having the wavelength propagating therein (e.g., input at its input end or generated or amplified within the core) among a plurality of the guided modes (e.g., to distribute a substantial fraction of the optical radiation having the wavelength propagating therein from its lower-order guided modes to its higher-order guided modes).

88. 发明申请

US20190316907A1 LARGE-DYNAMIC-RANGE FIBER OPTIC GYROSCOPE 审中-公开
公开(公告)号：US20190316907A1
公开(公告)日：2019-10-17
申请号：US16383106
申请日：2019-04-12
申请人： Nufern
发明人： Jan Amir KHAN , David PAQUETTE
IPC分类号： G01C19/72
摘要： A method for operating a fiber optic gyroscope to measure angular velocity uses a closed-loop modulation scheme. Two-state modulation voltages are applied to an optical modulator and continuously adjusted to maintain a null difference between corresponding demodulated voltages from a photodetector. If one of the modulation voltages reaches a threshold voltage, the continuous nulling adjustment is interrupted briefly while the two-state modulation voltages are reset to values that correspond to relative phases of π/2 and −π/2 when the gyroscope is stationary, then the continuous adjustment is resumed. This reoccurring resetting, while the gyroscope accelerates or decelerates, substantially increases the dynamic range over which the gyroscope can precisely measure angular velocity.

89. 发明授权

US09806487B2 Optical fiber system having a remote power module 有权
公开(公告)号：US09806487B2
公开(公告)日：2017-10-31
申请号：US14775180
申请日：2014-03-12
申请人： NUFERN
发明人： Martin Seifert , Scott Christensen
IPC分类号： H01S3/067 , H01S3/094 , H01S3/23 , H01S3/00 , B23K26/00 , H01S3/30 , H01S3/04 , H01S3/042
CPC分类号： H01S3/06758 , B23K26/00 , H01S3/0014 , H01S3/0064 , H01S3/0407 , H01S3/042 , H01S3/067 , H01S3/0675 , H01S3/094003 , H01S3/094096 , H01S3/2316 , H01S3/302
摘要： The present invention relates generally to high brightness optical fiber systems and, more particularly to optical fiber systems 104 having an optical power module 151 remote from an initial amplifier stage 101. In one aspect of the invention, the optical fiber system comprises a first active optical fiber 102 operatively coupled to one or more first pump sources 104; a first signal optical fiber 110 coupled to the first active optical fiber 102; one or more final pump sources 120; one or more final pump optical fibers 130, coupled to one or more of the final pump sources 120; and spatially separated from the one or more final pump sources 120 and the initial amplifier stage 101 comprising the first active optical fiber 102, a power module 151, comprising a final active optical fiber 150, coupled to the first signal optical fiber 110, said final active optical fiber 150 being coupled to said one or more final pump optical fibers 130.

90. 发明授权

US09352996B2 Optical fiber article for handling higher power and method of fabricating or using 有权
标题翻译：用于处理更高功率的光纤制品和制造或使用方法
公开(公告)号：US09352996B2
公开(公告)日：2016-05-31
申请号：US13935077
申请日：2013-07-03
申请人： Nufern
发明人： Douglas Guertin , Nils Jacobson , Kanishka Tankala , Adrian Carter
IPC分类号： C03B37/012 , C03B37/027 , G02B6/02 , H01S3/067
CPC分类号： C03B37/01222 , C03B37/01228 , C03B37/01231 , C03B37/02763 , C03B2203/18 , C03B2203/20 , C03B2203/32 , C03B2203/34 , C03B2205/06 , C03B2205/07 , G02B6/02042 , H01S3/06704 , H01S3/06708
摘要： An optical fiber preform, and method for fabricating, having a first core, a second core spaced from the first core and first and second regions, the first region having an outer perimeter having a first substantially straight length and the second region having an outer perimeter having a second substantially straight length facing the first straight length. One of the regions can comprise the first core and the other comprises the second core. The preform can be drawn with rotation to provide a fiber wherein a first core of the fiber is multimode at a selected wavelength of operation and a second core of the fiber is spaced from and winds around the first core and has a selected longitudinal pitch. The second core of the fiber can couple to a higher order mode of the first core and increase the attenuation thereof relative to the fundamental mode of the first core.
摘要翻译：一种光纤预制件及其制造方法，具有第一芯体，与第一芯体以及第一和第二区域隔开的第二芯体，第一区域具有第一基本上直的长度的外周边，第二区域具有外周边具有面向第一直线长度的第二基本上直的长度。其中一个区域可以包括第一核心，另一个包括第二核心。预成型件可以旋转拉伸以提供纤维，其中纤维的第一纤芯在选定的操作波长处是多模的，并且纤维的第二纤芯与第一纤芯间隔开并卷绕第一纤芯并具有选定的纵向间距。光纤的第二核心可以耦合到第一核心的更高阶模式并且相对于第一核心的基本模式增加其衰减。

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