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71. 发明申请

US20040156607A1 Multimode polarization maintaining double clad fiber 审中-公开
标题翻译：多模极化保持双包层光纤
公开(公告)号：US20040156607A1
公开(公告)日：2004-08-12
申请号：US10760680
申请日：2004-01-19
发明人： Julia A. Farroni , Upendra H. Manyam , Kanishka Tankala
IPC分类号： G02B006/17 , G02B006/16
CPC分类号： G02B6/03694 , C03B37/01217 , C03B2201/34 , C03B2203/302 , C03B2203/31 , G02B6/024 , G02B6/03622 , Y02P40/57
摘要： 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 or equal to 3, and the fiber can provide a beat length of less than 3.5 mm, where the beat length is measured at a wavelength of 633 nm.
摘要翻译：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的比可以大于或等于3，并且纤维可以提供小于3.5mm的拍子长度，其中在633nm的波长处测量拍子长度。

72. 发明授权

US06738549B2 Polarization maintaining optical fiber and production method for polarization maintaining optical fiber preform 有权
标题翻译：偏振维持光纤的极化保持和光纤预制棒的制造方法
公开(公告)号：US06738549B2
公开(公告)日：2004-05-18
申请号：US10091924
申请日：2002-03-05
申请人： Tadayuki Inaba , Shigeru Emori , Naoki Shamoto , Kuniharu Himeno
发明人： Tadayuki Inaba , Shigeru Emori , Naoki Shamoto , Kuniharu Himeno
IPC分类号： G02B616
CPC分类号： G02B6/105 , C03B37/01217 , C03B37/01231 , C03B2203/31
摘要： The present invention provides a polarization maintaining optical fiber of which polarization crosstalk characteristic is not deteriorated after fusing two or more polarization maintaining optical fibers, and provides a method for producing a preform thereof. The polarization maintaining optical fiber includes two stress applying portions disposed in a cladding around a core, in which an angle formed by a line connecting the center of one of the stress applying portions with the center of the core and a line connecting the center of the other stress applying portion with the center of the core is 3 degrees or less. The preform is produced by forming one insertion hole in a cladding element and then rotating the preform 180 degrees around a core element without moving the drilling tool, followed by forming the other insertion hole in the cladding element and then inserting stress applying elements into the insertion holes.
摘要翻译：本发明提供一种在熔融两种或更多种保偏光纤之后极化串扰特性不劣化的偏振保持光纤，并且提供了一种用于制造预制棒的方法。偏振保持光纤包括设置在芯周围的包层中的两个应力施加部分，其中由将应力施加部分之一的中心与芯的中心连接的线和连接芯的中心的线形成的角度具有芯的中心的其他应力施加部分为3度以下。通过在包层元件中形成一个插入孔，然后将预制件围绕芯元件旋转180度而不移动钻孔工具，然后在包层元件中形成另一插入孔，然后将应力施加元件插入到插入件中，孔。

73. 发明授权

US06687442B2 Optical fiber for preserving plane of polarization 有权
标题翻译：用于保持极化平面的光纤
公开(公告)号：US06687442B2
公开(公告)日：2004-02-03
申请号：US10047669
申请日：2002-01-14
申请人： Naoki Shamoto , Kuniharu Himeno , Akira Wada
发明人： Naoki Shamoto , Kuniharu Himeno , Akira Wada
IPC分类号： G02B602
CPC分类号： G02B6/105 , C03B37/01217 , C03B2203/31
摘要： An optical fiber for preserving the plane of polarization including a cladding and a stress imparting part disposed in the cladding, the stress imparting part comprising a base material including B2O3. The average concentration of B2O3 in the base material of the stress imparting part is in a range between about 17 and 21 wt. %, and the maximum concentration of B2O3 in the base material is in a range between about 17 and 22 wt. %. The optical fiber has excellent polarization plane preserving properties, and no concave portion is generated in its stress imparting part even under wet heat conditions.
摘要翻译：一种用于保持包括包层的偏振平面的光纤和设置在包层中的应力施加部分，所述应力赋予部分包括包含B 2 O 3的基底材料。应力赋予部的基材中的B 2 O 3的平均浓度在约17〜21重量％的范围内。％，并且基材中B 2 O 3的最大浓度在约17和22重量％之间的范围内。％。该光纤具有优异的偏振面保存特性，即使在湿热条件下也不会在其应力赋予部中产生凹部。

74. 发明授权

US5221307A Method for producing preform for polarization retaining optical fiber 失效
标题翻译：用于生产用于偏振保持光纤的预制件的方法
公开(公告)号：US5221307A
公开(公告)日：1993-06-22
申请号：US892783
申请日：1992-06-03
申请人： Masahiro Takagi , Hiroshi Suganuma , Hiroo Kanamori
发明人： Masahiro Takagi , Hiroshi Suganuma , Hiroo Kanamori
IPC分类号： C03B37/012
CPC分类号： C03B37/01217 , C03B2203/31
摘要： A preform for a polarization retaining optical fiber is produced by making at least two bores symmetrically around a center axis of a preform comprising a core part and a cladding part which surrounds the core part, decreasing a diameter of one end of each bore, or connecting a glass tube to one end of the preform, the glass tube having a part with a smaller inner diameter near its end which is connected to the preform, inserting a first glass rod, a stressing member and a second glass rod in this order from the other end of each bore or from an end of each bore which is remote from the connected glass tube, contacting the first glass rod to the diameter-decreased end of each bore or to the part with a smaller inner diameter of the glass tube, and heating and fusing the second glass rod to the preform.
摘要翻译：用于偏振保持光纤的预成型体通过使包括芯部的芯部和包层部的包围芯部的预成型件的中心轴对称地形成至少两个孔而制造，减少每个孔的一端的直径或连接玻璃管到预成型件的一端，玻璃管具有靠近其端部具有较小内径的部分，其连接到预成型件，从第一玻璃棒，第二玻璃棒按顺序插入第一玻璃棒，应力构件和第二玻璃棒每个孔的另一端或远离连接的玻璃管的每个孔的端部，将第一玻璃棒接触每个孔的直径减小的端部或具有较小的玻璃管的内径的部分，以及将第二玻璃棒加热并熔合到预制件上。

75. 发明授权

US4950047A Method of coating optical fibers 失效
标题翻译：涂敷光纤的方法
公开(公告)号：US4950047A
公开(公告)日：1990-08-21
申请号：US361385
申请日：1989-06-05
申请人： George E. Berkey , Robert M. Hawk
发明人： George E. Berkey , Robert M. Hawk
IPC分类号： C03B37/027 , C03C25/10 , G02B6/10 , G02B6/255 , G02B6/28 , G02B6/44
CPC分类号： C03C25/1055 , C03B37/027 , C03B37/02709 , G02B6/105 , G02B6/2552 , G02B6/2835 , G02B6/2843 , G02B6/4415 , G02B6/4486 , C03B2203/30 , C03B2203/31
摘要： This invention relates to a method of drawing twist-free optical fibers; it is particularly useful for drawing polarization retaining single-mode optical fibers having azimuthal inhomogeneities. There is applied to the fiber, during the drawing thereof, a coating having a non-circular cross-section, the azimuthal inhomogeneity of the fiber being positioned in a substantially constant orientation with respect to the non-circular cross-section of the coating. In another embodiment, a plurality of fibers having azimuthal inhomogeneities are drawn from a plurality of preforms that are properly oriented in the draw furnace. The fibers are drawn through the same coater so that the azimuthal inhomogeneity of each fiber is oriented in a substantially constant relationship with respect to the azimuthal inhomogeneities of the remaining fibers in the coating.
摘要翻译：本发明涉及无捻光纤的拉丝方法，对于具有方位不均匀性的偏振保持单模光纤是特别有用的。纤维在拉伸期间被应用于具有非圆形横截面的涂层，纤维的方位不均匀性相对于涂层的非圆形横截面定位在基本恒定的方位。在另一个实施例中，多个具有方位不均匀性的纤维从在拉丝炉中正确取向的多个预制件中拉出。通过相同的涂布机将纤维拉伸，使得每个纤维的方位不均匀性相对于涂层中剩余纤维的方位不均匀性基本恒定地定向。

76. 发明公开

US20240085618A1 POLARIZATION MAINTAINING OPTICAL FIBER AND POLARIZATION MAINTAINING OPTICAL FIBER MANUFACTURING METHOD 审中-公开
公开(公告)号：US20240085618A1
公开(公告)日：2024-03-14
申请号：US18272607
申请日：2022-02-08
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： Tetsuya HAYASHI
IPC分类号： G02B6/024 , C03B37/012 , C03B37/027 , G02B6/02
CPC分类号： G02B6/024 , C03B37/01217 , C03B37/01231 , C03B37/02709 , G02B6/02042 , C03B2203/31
摘要： A polarization-maintaining optical fiber includes at least one polarization maintaining core, a first cladding surrounding the at least one polarization maintaining core, and a second cladding surrounding the first cladding. The at least one polarization maintaining core includes a core and a pair of low-refractive-index portions each having a refractive index lower than a refractive index of the core. In a cross section, at least a portion of an outer periphery of each of the pair of low-refractive-index portions is in contact with the core, and an outer periphery of the core, excluding portions each being in contact with the low-refractive-index portions, has a circular shape. A maximum value of an absolute value of a residual stress in the cross section is 100 MPa or less. A mode-field flattening f is 0.05 to 0.40 at any wavelength within a range of 850 nm to 1625 nm.

77. 发明授权

US09941656B2 Polarization-maintaining (PM) double-clad (DC) optical fiber 有权
公开(公告)号：US09941656B2
公开(公告)日：2018-04-10
申请号：US14995300
申请日：2016-01-14
申请人： OFS Fitel, LLC
发明人： David J DiGiovanni
IPC分类号： G02B6/24 , H01S3/094 , C03B37/012 , G02B6/024 , G02B6/036 , H01S3/067 , G02B6/028 , H01S3/0941 , G02B6/255
CPC分类号： H01S3/094007 , C03B37/01217 , C03B2203/22 , C03B2203/31 , G02B6/024 , G02B6/0285 , G02B6/03616 , G02B6/03622 , G02B6/03627 , G02B6/03633 , G02B6/255 , H01S3/06712 , H01S3/06729 , H01S3/06733 , H01S3/0675 , H01S3/06754 , H01S3/094053 , H01S3/09408 , H01S3/0941 , H01S3/09415
摘要： A double-clad (DC) polarization-maintaining (PM) optical fiber comprises a core, an inner cladding, an outer cladding, and stress rods. The core has a core refractive index (ncore). The inner cladding is located radially exterior to the core and has an inner cladding refractive index (n1), which is less than ncore. The stress rods are located in the inner cladding, and each stress rod has a stress rod refractive index (n2), which is substantially matched to n1. The outer cladding is located radially exterior to the inner cladding. The outer cladding has an outer cladding refractive index (nout), which is less than n1.

78. 发明申请

US20170248757A1 High-Birefringence Hollow-Core Fibers And Techniques For Making Same 审中-公开
公开(公告)号：US20170248757A1
公开(公告)日：2017-08-31
申请号：US15488553
申请日：2017-04-17
申请人： OFS Fitel, LLC
发明人： David J. Digiovanni , John M. Fini , Robert S. Windeler
IPC分类号： G02B6/032 , C03B37/027 , C03B37/012
CPC分类号： G02B6/032 , C03B37/01217 , C03B37/0122 , C03B37/02709 , C03B37/02781 , C03B2203/14 , C03B2203/16 , C03B2203/30 , C03B2203/302 , C03B2203/31 , C03B2205/10 , G02B6/02328 , G02B6/024 , Y02P40/57
摘要： A hollow core fiber has a cladding comprising a matrix of cells, wherein each cell comprises a hole and a wall surrounding the hole. The fiber further has a hollow core region comprising a core gap in the matrix of cells, wherein the core gap spans a plurality of cells and has a boundary defined by the interface of the core gap. The matrix of cells comprises a plurality of lattice cells, and a plurality of defect cells characterised by at least one difference in at least one property from that of the lattice cells. The cells at the core region boundary include lattice cells and defect cells that are arranged in a pattern so as to produce birefringence in a light propagating through the hollow core fiber. Further described is a technique for making the fiber.

79. 发明申请

US20160033720A1 POLARIZATION-MAINTAINING (PM) DOUBLE-CLAD (DC) OPTICAL FIBER 审中-公开
标题翻译：偏光维持（PM）双光（DC）光纤
公开(公告)号：US20160033720A1
公开(公告)日：2016-02-04
申请号：US14445199
申请日：2014-07-29
申请人： OFS FITEL, LLC
发明人： David J. DiGiovanni
IPC分类号： G02B6/028 , G02B6/255 , G02B6/036
CPC分类号： H01S3/094007 , C03B37/01217 , C03B2203/22 , C03B2203/31 , G02B6/024 , G02B6/0285 , G02B6/03616 , G02B6/03622 , G02B6/03627 , G02B6/03633 , G02B6/255 , H01S3/06712 , H01S3/06729 , H01S3/06733 , H01S3/0675 , H01S3/06754 , H01S3/094053 , H01S3/09408 , H01S3/0941 , H01S3/09415
摘要： A double-clad (DC) polarization-maintaining (PM) optical fiber comprises a core, an inner cladding, an outer cladding, and stress rods. The core has a core refractive index (ncore). The inner cladding is located radially exterior to the core and has an inner cladding refractive index (n1), which is less than ncore. The stress rods are located in the inner cladding, and each stress rod has a stress rod refractive index (n2), which is substantially matched to n1. The outer cladding is located radially exterior to the inner cladding. The outer cladding has an outer cladding refractive index (nout), which is less than n1.
摘要翻译：双包层（DC）偏振维持（PM）光纤包括芯，内包层，外包层和应力棒。核心具有核心折射率（ncore）。内包层位于芯的径向外侧，并且具有小于ncore的内包层折射率（n1）。应力杆位于内包层中，每个应力杆具有与n1基本匹配的应力棒折射率（n2）。外包层位于内包层的径向外侧。外包层具有小于n1的外包层折射率（nout）。

80. 发明申请

US20150198764A1 HIGH-BIREFRINGENCE HOLLOW-CORE FIBERS AND TECHNIQUES FOR MAKING SAME 有权
标题翻译：高效的中空纤维和制造相同的技术
公开(公告)号：US20150198764A1
公开(公告)日：2015-07-16
申请号：US14420467
申请日：2013-03-15
申请人： OFS Fitel, LLC
发明人： David J. Digiovanni , John M. Fini , Robert S. Windeler
IPC分类号： G02B6/032 , C03B37/027 , C03B37/012
CPC分类号： G02B6/032 , C03B37/01217 , C03B37/0122 , C03B37/02709 , C03B37/02781 , C03B2203/14 , C03B2203/16 , C03B2203/30 , C03B2203/302 , C03B2203/31 , C03B2205/10 , G02B6/02328 , G02B6/024 , Y02P40/57
摘要： A hollow core fiber has a cladding comprising a matrix of cells, wherein each cell comprises a hole and a wall surrounding the hole. The fiber further has a hollow core region comprising a core gap in the matrix of cells, wherein the core gap spans a plurality of cells and has a boundary defined by the interface of the core gap. The matrix of cells comprises 8 plurality of lattice cells, and a plurality of defect cells characterised by at least one difference in at least one property from that of the lattice cells. The cells at the core region boundary include lattice cells and defect cells that are arranged in a pattern that define two orthogonal axes of reflection symmetry, so as to produce birefringence in a light propagating through the hollow core fiber.
摘要翻译：中空芯纤维具有包含电池基体的包层，其中每个电池包括孔和围绕孔的壁。纤维还具有包含细胞矩阵中的芯间隙的中空芯区域，其中芯间隙跨越多个单元并且具有由芯间隙的界面限定的边界。单元矩阵包括8个多个晶格单元，以及多个缺陷单元，其特征在于与晶格单元的至少一个特性的至少一个差异。核心区域边界处的单元包括以限定反射对称的两个正交轴的图案布置的晶格单元和缺陷单元，以便在通过中空芯纤维传播的光中产生双折射。

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