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公开(公告)号：US20180143377A1
公开(公告)日：2018-05-24
申请号：US15802897
申请日：2017-11-03
CPC分类号： G02B6/14 , C03B37/02745 , C03B37/15 , C03B2203/20 , C03B2203/29 , G02B6/02042 , G02B6/02338 , G02B6/024 , G02B6/036 , G02B6/03605 , G02B6/03611 , G02B6/105 , G02B6/262 , G02B6/264 , G02B6/2726
摘要： An optical fiber device may include a unitary core including a primary section and a secondary section, wherein at least a portion of the secondary section is offset from a center of the unitary core, wherein the unitary core twists about an optical axis of the optical fiber device along a length of the optical fiber device, and wherein a refractive index of the primary section is greater than a refractive index of the secondary section; and a cladding surrounding the unitary core.
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公开(公告)号：US20120207439A1
公开(公告)日：2012-08-16
申请号：US13372128
申请日：2012-02-13
申请人： Kenji OKADA
发明人： Kenji OKADA
CPC分类号： C03B37/032 , C03B37/02745 , C03B2203/06 , C03B2203/18 , C03B2203/19 , C03B2205/06 , C03C25/1065 , G02B6/02285
摘要： An optical fiber includes a bare optical fiber portion, to which elastic torsion is applied, and a coating layer, which coats the bare optical fiber portion, is formed of curable resin, and causes elastic repulsion against resilience occurring in the bare optical fiber portion so that the elastic torsion applied to the bare optical fiber portion is held.
摘要翻译： 光纤包括施加弹性扭曲的裸光纤部分和涂覆裸光纤部分的涂层由可固化树脂形成，并且在裸光纤部分中产生抵抗弹性的弹性斥力，因此 施加到裸光纤部分的弹性扭转被保持。
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3.发明授权Optical fiber twisting apparatus with a roller having an accuracy of 15 microns or less 有权具有精度为15微米以下的辊的光纤加捻装置公开(公告)号：US07845195B2
公开(公告)日：2010-12-07
申请号：US11471662
申请日：2006-06-21
申请人： Kenji Okada , Koichi Harada
发明人： Kenji Okada , Koichi Harada
IPC分类号： C03B37/027 , C03B37/075
CPC分类号： C03B37/032 , C03B37/02745 , C03B2203/19 , C03B2203/36 , C03B2205/06
摘要： An optical fiber twisting apparatus that prevents line distortion in an optical fiber undergoing a drawing process and provides a consistent coating on a bare optical fiber. This optical fiber twisting apparatus includes a twist roller apparatus that having a twist roller that, by imparting a twist to an optical fiber, imparts a twist to a molten portion of an optical fiber preform positioned on an upstream side of the optical fiber, and a support portion that supports the twist roller. The accuracy of the outer circumference of the twist roller when the twist roller is forming a part of the twist roller apparatus is 15 μm or less.
摘要翻译： 一种光纤加捻装置，其防止经历拉伸工艺的光纤中的线变形，并在裸光纤上提供一致的涂层。 这种光纤加捻装置包括一个加捻辊装置，该加捻辊装置具有一个加捻辊，通过赋予光纤的扭曲，对位于光纤的上游侧的光纤预制件的熔融部分施加扭曲， 支撑扭转辊的支撑部分。 当加捻辊形成加捻辊装置的一部分时，加捻辊的外周的精度为15μm以下。
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4.发明申请Method and Apparatus for the Production of Optical Fibers With Reduced Polarization Mode Dispersion 审中-公开用于生产具有减少极化模式色散的光纤的方法和装置公开(公告)号：US20090205374A1
公开(公告)日：2009-08-20
申请号：US12086689
申请日：2005-12-23
IPC分类号： C03B37/02
CPC分类号： C03B37/032 , C03B37/02745 , C03B2203/19 , C03B2203/36 , C03B2205/06
摘要： A method and apparatus for manufacturing an optical fiber includes the steps and/or means of: drawing a fiber from a heated preform by applying a pulling force to the fiber; spinning the fiber while it is drawn, wherein the step of spinning the fiber includes the sub-steps of winding the fiber on a spin roller by a winding arc, such that a friction force is generated between the fiber and the spin roller resulting from the winding arc and from the pulling force; axially displacing the spin roller such that the fiber is caused to roll over the spin roller surface by the friction force.
摘要翻译： 用于制造光纤的方法和装置包括以下步骤和/或手段：通过向纤维施加拉力从加热的预成型件中拉伸纤维; 在拉伸纤维的同时旋转纤维，其中纺丝纤维的步骤包括通过缠绕弧将纤维缠绕在纺丝辊上的子步骤，使得在纤维和纺丝辊之间产生摩擦力， 缠绕弧和拉力; 使旋转辊轴向移动，使得纤维通过摩擦力在纺丝辊表面上滚动。
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5.发明授权公开(公告)号：US07529452B2
公开(公告)日：2009-05-05
申请号：US11838454
申请日：2007-08-14
申请人： Ji-Sang Park , Soon-Il Sohn , Lae-Hyuk Park
发明人： Ji-Sang Park , Soon-Il Sohn , Lae-Hyuk Park
IPC分类号： G02B6/02
CPC分类号： C03B37/02745 , C03B2203/20 , C03B2203/36 , C03B2205/06
摘要： A method for manufacturing a single mode optical fiber with a reduced PMD (Polarization Mode Dispersion), by drawing an optical fiber preform composed of a core and a clad surrounding the core, includes (a) heating the optical fiber preform to a high temperature using a furnace, and drawing an optical fiber from an outlet of the furnace at a linear velocity (Vf) of 500 mpm or above by means of neck-down drawing; and (b) impressing a spin on the optical fiber by means of a spin impressing device provided on a drawing path of the optical fiber, wherein a maximum spatial frequency of spin (y) impressed on the optical fiber satisfies the following equations Exp ( 24 t - 12 ) ≤ y ≤ - 20 × log ( V f 500 ) + 25 and t=(0.21×CladOval)+(0.04×CoreOval)+(0.17×ECC), where y is a maximum spatial frequency of spin [turns/m], Vf is a drawing velocity [mpm], CladOval is a clad ovality [%], CoreOval is a core ovality [%], and ECC is an eccentricity [μm].
摘要翻译： 制造具有降低的PMD（极化模式色散）的单模光纤的方法，通过绘制由芯和围绕芯的包层构成的光纤预制件，包括：（a）使用 炉，并通过颈缩拉丝以500mpm以上的线速度（Vf）从炉的出口拉出光纤; 和（b）通过设置在光纤的绘制路径上的自旋施加装置在光纤上施加自旋，其中施加在光纤上的最大旋转空间频率（y）满足以下等式
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6.发明申请Method, System and Device for Imparting a Predetermined Rotation to an Optical Fibre 审中-公开用于将预定旋转传递给光纤的方法，系统和装置公开(公告)号：US20080141723A1
公开(公告)日：2008-06-19
申请号：US11792083
申请日：2004-12-02
IPC分类号： C03B37/027 , C03B37/03
CPC分类号： C03B37/02745 , C03B37/0253 , C03B37/032 , C03B2203/20 , C03B2203/36 , C03B2205/06 , G02B6/02285 , G02B6/105
摘要： A method and a system based on the method imparts to an optical fiber a predetermined rotation about its axis, wherein the fiber is rotated by way of a frictional force acting on the fiber while it is advanced in a predetermined direction. The rotation actually imparted to the optical fiber is measured on-line while the fiber is advancing in the direction and the frictional force is controlled responsively to the measured rotation so as to obtain the predetermined rotation. Spinning devices acting on the optical fiber by way of an externally controllable frictional force and particularly suitable to be used with the method are disclosed.
摘要翻译： 基于该方法的方法和系统使光纤围绕其轴线施加预定的旋转，其中当纤维沿预定方向前进时，纤维通过作用在纤维上的摩擦力而旋转。 在纤维沿方向前进的同时在线测量实际赋予光纤的旋转，并且响应于测量的旋转来控制摩擦力以获得预定的旋转。 公开了通过外部可控摩擦力作用在光纤上的纺丝装置，特别适用于该方法。
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7.发明授权公开(公告)号：US07362937B2
公开(公告)日：2008-04-22
申请号：US11218786
申请日：2005-09-06
IPC分类号： G02B6/02
CPC分类号： G02B6/03672 , C03B37/01211 , C03B37/01231 , C03B37/02745 , C03B2201/31 , C03B2201/34 , C03B2201/36 , C03B2203/14 , C03B2203/18 , C03B2203/19 , C03B2203/22 , C03B2203/32 , C03B2205/06 , C03B2205/10 , G02B6/02366 , G02B6/03605 , H01S3/06708 , H01S3/06741 , H01S3/094003 , H01S3/094007 , H01S3/1608 , H01S3/1691 , H01S3/1693 , H01S3/1698
摘要： An optical fiber can efficiently excite metallic ions by a pump lightwave, and an optical fiber amplifier and an optical fiber laser light source both incorporate the optical fiber. The optical fiber comprises (a) a solid region that has a first region doped with metallic ions and a second region surrounding the first region and that allows a lightwave for exciting the metallic ions to travel in a multiple mode and (b) a third region surrounding the second region and having a plurality of holes stretching along the length of the optical fiber. The optical fiber has a structure in which the first region is supplied with the power of a lightwave that is included in the pump lightwave and that is in a mode having no intensity peak at the center axis of the solid region.
摘要翻译： 光纤可以通过泵浦光波有效地激发金属离子，并且光纤放大器和光纤激光光源都包含光纤。 光纤包括（a）固体区域，其具有掺杂有金属离子的第一区域和围绕第一区域的第二区域，并且允许用于激发金属离子的光波以多种模式行进，以及（b）第三区域 围绕所述第二区域并且具有沿着所述光纤的长度延伸的多个孔。 光纤具有这样的结构，其中第一区域被提供有包含在泵浦光波中的光波的功率，并且处于在固体区域的中心轴处没有强度峰值的模式。
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8.发明申请公开(公告)号：US20080041110A1
公开(公告)日：2008-02-21
申请号：US11838454
申请日：2007-08-14
申请人： JI-SANG PARK , Soon-Il Sohn , Lae-Hyuk Park
发明人： JI-SANG PARK , Soon-Il Sohn , Lae-Hyuk Park
IPC分类号： C03B37/023
CPC分类号： C03B37/02745 , C03B2203/20 , C03B2203/36 , C03B2205/06
摘要： A method for manufacturing a single mode optical fiber with a reduced PMD (Polarization Mode Dispersion), by drawing an optical fiber preform composed of a core and a clad surrounding the core, includes (a) heating the optical fiber preform to a high temperature using a furnace, and drawing an optical fiber from an outlet of the furnace at a linear velocity (Vf) of 500 mpm or above by means of neck-down drawing; and (b) impressing a spin on the optical fiber by means of a spin impressing device provided on a drawing path of the optical fiber, wherein a maximum spatial frequency of spin (y) impressed on the optical fiber satisfies the following equations Exp ( 24 t - 12 ) ≤ y ≤ - 20 × log ( V f 500 ) + 25 and t=(0.21×CladOval)+(0.04×CoreOval)+(0.17×ECC), where y is a maximum spatial frequency of spin [turns/m], Vf is a drawing velocity [mpm], CladOval is a clad ovality [%], CoreOval is a core ovality [%], and ECC is an eccentricity [μm].
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公开(公告)号：US20080022725A1
公开(公告)日：2008-01-31
申请号：US10568686
申请日：2003-08-29
申请人： Davide Sarchi , Sabrina Fogliani , Roberto Pata
发明人： Davide Sarchi , Sabrina Fogliani , Roberto Pata
IPC分类号： C03B37/025 , C03B37/027 , G02B6/10
CPC分类号： G02B6/02285 , C03B37/02745 , C03B37/032 , C03B2203/19 , C03B2203/36 , C03B2205/06
摘要： In a process for producing a low polarization mode dispersion optical fiber, which comprises the steps of drawing a glass preform into an optical fiber and of spinning, during drawing, the optical fiber about an optical fiber axis, the spinning is imparted according to a bidirectional and substantially trapezoidal spin function, which includes zones (P) of substantially constant amplitude (plateau) and zones of transition (T) where inversion of the spin direction takes place, wherein the extension (p) of the zones of substantially constant amplitude is greater than the extension (t) of the zones of transition, and the number of inversions of the direction of spin in a length of fiber of 20 m is at most two.
摘要翻译： 在制造低分散模式色散光纤的方法中，包括以下步骤：在拉丝期间将玻璃预成型件拉制成光纤并在拉丝期间围绕光纤轴线旋转光纤，根据双向 并且具有基本上梯形的自旋函数，其包括基本上恒定振幅（平台）的区域（P）和转移区域（T），其中发生自旋方向的反转，其中基本恒定幅度的区域的延伸部分（p）较大 比转移区域的延伸部分（t）长，并且光纤长度为20μm的旋转方向的反转次数为2个以下。
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10.发明授权Method for producing twisted optical fiber with reduced polarization mode dispersion 有权具有降低的偏振模色散的扭转光纤的制造方法公开(公告)号：US07310974B2
公开(公告)日：2007-12-25
申请号：US10754904
申请日：2004-01-09
申请人： Sangeeta Mohanty , Nacham Sridhar , Salaj Sinha , Nitesh Gulati , Sthitadhi Das
发明人： Sangeeta Mohanty , Nacham Sridhar , Salaj Sinha , Nitesh Gulati , Sthitadhi Das
IPC分类号： C03B37/022
CPC分类号： C03B37/032 , C03B37/02745 , C03B2203/19 , C03B2203/20 , C03B2203/36 , C03B2205/06 , C03B2205/42 , G02B6/02285
摘要： A method for drawing an optical fiber having reduced polarization mode dispersion (PMD) draws an optical fiber from an optical fiber preform whose core ovality is at max about 3%, coats the optical fiber with acrylic polymer and twists the coated optical fiber with a pair of spinning wheels. The twisting of the fiber is achieved by four discrete spin rates that repeat in a periodic fashion after the drawing of certain lengths of the optical fiber. At least one of the spin rates varies in a trapezoidal manner along the respective one of drawn lengths of the optical fiber.
摘要翻译： 用于绘制具有降低的偏振模色散（PMD）的光纤的方法从其核心椭圆度为最大约3％的光纤预制棒拉制光纤，用丙烯酸聚合物涂覆光纤并用一对扭曲涂覆的光纤 的旋转轮。 纤维的扭曲是通过在拉伸一定长度的光纤之后以周期性方式重复的四种离散旋转速率实现的。 旋转速率中的至少一个沿着光纤的拉伸长度的相应的一个梯形方式变化。
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