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    • 3. 发明申请
    • Fiber Optic Article with Inner Region
    • 内光纤光纤产品
    • US20060198590A1
    • 2006-09-07
    • US11419907
    • 2006-05-23
    • Julia FarroniUpendra ManyamNils JacobsonKanishka TankalaAdrian Carter
    • Julia FarroniUpendra ManyamNils JacobsonKanishka TankalaAdrian Carter
    • G02B6/02
    • G02B6/024
    • 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.
    • 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。
    • 4. 发明申请
    • FIBER OPTIC ARTICLE WITH INNER REGION
    • 具有内陆地区的光纤产品
    • US20060029343A1
    • 2006-02-09
    • US10911812
    • 2004-08-05
    • Julia FarroniUpendra ManyamNils JacobsonKanishka TankalaAdrian Carter
    • Julia FarroniUpendra ManyamNils JacobsonKanishka TankalaAdrian Carter
    • G02B6/02
    • G02B6/024
    • 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.
    • 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。
    • 7. 发明申请
    • Multimode polarization maintaining double clad fiber
    • 多模极化保持双包层光纤
    • US20050008311A1
    • 2005-01-13
    • US10910924
    • 2004-08-03
    • Julia FarroniUpendra ManyamKanishka Tankala
    • Julia FarroniUpendra ManyamKanishka Tankala
    • C03B37/012G02B6/024G02B6/036G02B6/17
    • C03B37/01217C03B2201/34C03B2203/23C03B2203/302C03B2203/31G02B6/024G02B6/03622G02B6/03694Y02P40/57
    • A polarization maintaining optical fiber has a core extending along a longitudinal axis, where the core includes a rare earth and a first index of refraction. A cladding is disposed about the core and has a first thermal coefficient of expansion (TCE) and a second index of refraction that is less than the first index of refraction. The fiber can include a pair of longitudinally extending members, and each of the members can have a TCE that is different than the first TCE of the cladding. The pair can be spaced apart by a distance di. A second cladding can be disposed about the first cladding, and the second cladding can have a third index of refraction that is less than the second index of refraction. The fiber can have a fundamental mode having a mode field diameter (MFD). The core can be a multimode core having a diameter dc that is greater than or equal to 15 microns, the numerical aperture of the core relative to the first cladding can be less than or equal to 0.12, the ratio di/MFD can be greater than 3, and the fiber can provide a beat length of less than 3 mm, where the beat length is measured at a wavelength of 633 nm.
    • 偏振保持光纤具有沿纵轴延伸的芯,其中芯包括稀土和第一折射率。 包层设置在芯周围,并且具有小于第一折射率的第一热膨胀系数(TCE)和第二折射率。 纤维可以包括一对纵向延伸的构件,并且每个构件可以具有与包层的第一TCE不同的TCE。 该对可以间隔距离di。 可以围绕第一包层设置第二包层,并且第二包层可以具有小于第二折射率的第三折射率。 光纤可以具有模场直径(MFD)的基模。 芯可以是具有大于或等于15微米的直径dc的多模芯,芯相对于第一包层的数值孔径可以小于或等于0.12,di / MFD的比可以大于 3,并且纤维可以提供小于3mm的拍子长度,其中在633nm的波长处测量拍子长度。
    • 8. 发明申请
    • Optical fiber with suppressed stimulated brillouin scattering and method for making such a fiber
    • 抑制受激布里渊散射的光纤和制造这种光纤的方法
    • US20060093294A1
    • 2006-05-04
    • US10981437
    • 2004-11-03
    • Upendra ManyamKanishka TankalaNils Jacobson
    • Upendra ManyamKanishka TankalaNils Jacobson
    • G02B6/02
    • G02B6/02C03B37/02718C03B37/02727C03B37/02745C03B2203/18C03B2203/19C03B2205/06C03B2205/20C03B2205/56G02B6/02052
    • 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.
    • 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,其中纤芯包括第一部分,该第一部分具有与声波的传播速度基本相同的第一部分,整个插入在纵向间隔的部分之间,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。
    • 9. 发明申请
    • Optical fiber having reduced defect density
    • 具有降低的缺陷密度的光纤
    • US20050254765A1
    • 2005-11-17
    • US11121501
    • 2005-05-03
    • Martin SeifertUpendra ManyamMansoor AlamKanishka TankalaJaroslaw AbramczykDouglas GuertinNils Jacobson
    • Martin SeifertUpendra ManyamMansoor AlamKanishka TankalaJaroslaw AbramczykDouglas GuertinNils Jacobson
    • C03C25/10G02B6/02G02B6/16
    • C03C25/105G02B6/02033
    • An optical fiber comprising a multimode glass core having a diameter of at least 250 microns and an index of refraction and a polymer cladding having a thickness and contactingly surrounding a glass portion of the fiber so as to define an interface between the glass portion and the polymer cladding. The polymer cladding can have a first index of refraction that is less than the index of refraction. The fiber can comprise a density of less than 0.25 non-conforming regions having a diameter of 25 microns or greater per millimeter of length along the fiber, where each of the non-conforming regions is a region visible to the human eye under an optical microscope and having at least a portion thereof within a selected distance of the interface. The selected distance can be less than or equal to the thickness of the polymer cladding. The optical microscope can have a total magnification of about 200. The polymer cladding can be applied to at least a part of the optical fiber in at least a class 1000 environment. Methods of using optical fibers, including receiving with an optical fiber optical energy from a source and guiding the optical energy with the optical fiber, wherein the optical energy comprises at least one of 1) pulses each comprising a peak power of at least 10 kW, 2) an average power of at least 50 Watts, or 3) an average power density of at least 2.9 kW/cm2.
    • 一种光纤,其包括具有至少250微米直径的多模玻璃芯和折射率和聚合物包层,其具有厚度并且接触地围绕所述纤维的玻璃部分以限定所述玻璃部分和所述聚合物之间的界面 包层 聚合物包层可以具有小于折射率的第一折射率。 纤维可以包含小于0.25个不均匀区域的密度,沿着纤维具有每毫米长度的直径为25微米或更大的不符合区域,其中每个不一致区域是在光学显微镜下人眼可见的区域 并且在接口的选定距离内具有至少一部分。 所选择的距离可以小于或等于聚合物包层的厚度。 光学显微镜可以具有约200的总放大率。聚合物包层可以在至少1000级环境中施加到光纤的至少一部分。 使用光纤的方法,包括从光源接收光纤光能并用光纤引导光能,其中光能包括以下各项中的至少一个:每个脉冲包括至少10kW的峰值功率, 2)至少50瓦的平均功率,或3)平均功率密度为至少2.9kW / cm 2。
    • 10. 发明申请
    • Optical Fiber
    • 光纤
    • US20070089462A1
    • 2007-04-26
    • US11538334
    • 2006-10-03
    • Julia FarroniAdrian CarterKanishka Tankala
    • Julia FarroniAdrian CarterKanishka Tankala
    • C03B37/023
    • G02B6/02114C03B37/01217C03B37/01231C03B2201/10C03B2201/12C03B2201/28C03B2201/31C03B2201/34C03B2201/42C03B2203/23C03B2203/31G02B6/024
    • An optical fiber comprises a photosensitive core that includes a concentration of a first material that increases the refractive index of the core and a concentration of a second material that is other than boron and that reduces the refractive index of the core. A cladding is disposed about the core for tending to confine light to the core. The fiber also includes at least one longitudinally extending region having a thermal coefficient of expansion that is different from the thermal coefficient of expansion of the cladding. In another embodiment, the core includes a concentration of germanium and a concentration of boron. Also disclosed is a polarization-maintaining double-clad (PM DC) fiber comprising one or both of at least one circular axially extending stress inducing region(s) and an inner cladding comprising a circular outer perimeter. Fibers according to the invention can include a rare earth dopant for emitting light of a selected wavelength responsive to being pumped by pump light of a pump wavelength that is different than the selected wavelength.
    • 光纤包括感光芯,其包括提高芯的折射率的第一材料的浓度和不同于硼的第二材料的浓度,并降低芯的折射率。 围绕芯部布置包层以倾向于将光限制在芯部上。 纤维还包括具有不同于包层的热膨胀系数的热膨胀系数的至少一个纵向延伸区域。 在另一个实施方案中,芯包括锗的浓度和硼的浓度。 还公开了一种包括至少一个圆形轴向延伸的应力诱导区域和包含圆形外周边的内包层中的一个或两个的偏振保持双包层(PMDC)光纤。 根据本发明的纤维可以包括用于发射选定波长的光的稀土掺杂剂,其响应于通过不同于所选波长的泵浦波长的泵浦光泵浦。