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1.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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2.发明授权公开(公告)号：US07409126B2
公开(公告)日：2008-08-05
申请号：US10528836
申请日：2003-09-22
IPC分类号： G02B6/44
CPC分类号： B65H49/02 , C03B37/02745 , C03B37/032 , C03B37/12 , C03B2203/19 , C03B2203/20 , C03B2203/36 , C03B2205/06 , G02B6/02285
摘要： An apparatus for producing a low-PMD optical fiber having a furnace for melting a lower portion of an optical preform; a traction device for pulling an optical fiber from the lower portion of an optical preform; a spinning device for imparting a substantially constant and unidirectional spin to the optical fiber as it is pulled, which causes the fiber to undergo an elastic torsion; a winding device for winding the optical fiber onto a reel; and a twisting device for imparting to the spun optical fiber a unidirectional twist in a direction opposite the elastic torsion, so as to control the residual twist in the optical fiber. A process for producing the fiber, an optical fiber and a cable are also provided.
摘要翻译： 一种用于生产具有用于熔化光学预型件的下部的炉的低PMD光纤的设备; 用于从光学预型件的下部拉动光纤的牵引装置; 旋转装置，用于在被拉动时使光纤基本上恒定且单向旋转，这导致纤维经受弹性扭转; 用于将光纤缠绕到卷轴上的卷绕装置; 以及用于使纺丝光纤沿与弹性扭转相反的方向赋予单向捻度的扭转装置，以便控制光纤中的残余扭曲。 还提供了用于生产纤维，光纤和电缆的方法。
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公开(公告)号：US06321016B1
公开(公告)日：2001-11-20
申请号：US09335509
申请日：1999-06-18
IPC分类号： G02B602
CPC分类号： G02B6/03644 , G02B6/02009 , G02B6/02219 , G02B6/03694
摘要： An optical transmission fiber has a refractive index profile with an area of increased index of refraction at the inner core of the fiber, an annular region positioned radially outward from the inner core with an index of refraction exceeding the index of the inner core, and at least a low dopant content region in a cross-sectional region between the inner core and the annular region. A low loss cladding layer surrounds the core region. The optical transmission fiber with this segmented core profile provides a high effective area, low non-linearity coefficient, nonzero dispersion, and relatively flat dispersion slope.
摘要翻译： 光传输光纤具有折射率分布，在纤芯的内芯处的折射率增加的区域，从内芯径向向外设置的折射率超过内芯的折射率的环形区域，以及在 在内芯和环形区域之间的横截面区域中的至少一个低掺杂剂含量区域。 低损耗包层围绕核心区域。 具有这种分段磁芯轮廓的光传输光纤提供高有效面积，低非线性系数，非零色散和相对平坦的色散斜率。
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公开(公告)号：US06922514B2
公开(公告)日：2005-07-26
申请号：US10342882
申请日：2003-01-14
IPC分类号： G02B6/02
CPC分类号： G02B6/03644 , G02B6/02009 , G02B6/02219 , G02B6/03694
摘要： An optical transmission fiber has a refractive index profile with an area of increased index of refraction at the inner core of the fiber, an annular region positioned radially outward from the inner core with an index of refraction exceeding the index of the inner core, and at least a low dopant content region in a cross-sectional region between the inner core and the annular region. A low loss cladding layer surrounds the core region. The optical transmission fiber with this segmented core profile provides a high effective area, low non-linearity coefficient, nonzero dispersion, and relatively flat dispersion slope.
摘要翻译： 光传输光纤具有折射率分布，在纤芯的内芯处的折射率增加的区域，从内芯径向向外设置的折射率超过内芯的折射率的环形区域，以及在 在内芯和环形区域之间的横截面区域中的至少一个低掺杂剂含量区域。 低损耗包层围绕核心区域。 具有这种分段磁芯轮廓的光传输光纤提供高有效面积，低非线性系数，非零色散和相对平坦的色散斜率。
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5.发明授权Optical fiber tensioning device and method of controlling the tension applied to an optical fiber 有权光纤张紧装置和控制施加在光纤上的张力的方法公开(公告)号：US06595454B2
公开(公告)日：2003-07-22
申请号：US09748854
申请日：2000-12-28
IPC分类号： B65H5938
CPC分类号： B65H59/385 , B65H2701/32 , C03B37/032 , C03B37/12 , G02B6/4457
摘要： An optical fibre tensioning device, receiving at its input an optical fibre from a traction device and capable of supplying the optical fibre from its output to a device for storing the fibre. The tensioning device comprises at least one fixed pulley on which the optical fibre is wound for a first length, and at least one movable pulley on which the optical fibre is wound for a second length. A device for measuring the tension applied to the fibre and a motorized device for moving the movable pulley interact with each other to control a distance (Dp) between axes of the pulleys in such a way as to automatically keep the tension applied to the fibre essentially constant.
摘要翻译： 一种光纤张紧装置，在其输入端处接收来自牵引装置的光纤并且能够将光纤从其输出提供给用于存储光纤的装置。 张紧装置包括至少一个固定皮带轮，光纤在其上缠绕第一长度;以及至少一个可动皮带轮，光纤在其上缠绕第二长度。 用于测量施加到纤维的张力的装置和用于移动可动皮带轮的电动装置相互作用以控制滑轮轴线之间的距离（Dp），以便自动保持施加在纤维上的张力基本上 不变。
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公开(公告)号：US06577800B2
公开(公告)日：2003-06-10
申请号：US09881109
申请日：2001-06-15
IPC分类号： G02B616
CPC分类号： G02B6/02014 , G02B6/02223 , G02B6/02238 , G02B6/02271 , G02B6/0285 , G02B6/03605 , G02B6/03611 , G02B6/03622 , G02B6/03644 , G02B6/29377
摘要： An optical transmission fiber for use in a metropolitan or access network is disclosed. The transmission line includes a fiber being single mode at a first operating wavelength of around 1310 nm and a second operating wavelength of around 1550 nm. The dispersion of the fiber is negative at one of the first and second wavelengths and positive at the other wavelength, with an absolute value of between about 5 and 15 ps/nm/km. The fiber also has a zero dispersion wavelength that is located between the first and second operating wavelengths, and an effective area at a wavelength around 1550 nm greater than about 60 &mgr;m2. The cabled fiber has a cutoff wavelength less than about 1300 nm. The fiber allows wavelength division multiplexing (WDM) operation in both the bands (1310 nm and 1550 nm) by reducing nonlinear effects such as four-wave mixing (FWM).
摘要翻译： 公开了一种用于大都市或接入网络的光传输光纤。 传输线包括在大约1310nm的第一工作波长和约1550nm的第二工作波长下是单模的光纤。 光纤的色散在第一和第二波长中的一个处是负的，在另一个波长处是正的，绝对值在约5psps / nm / km之间。 该光纤还具有位于第一和第二工作波长之间的零色散波长，以及在大约1550nm的波长的有效面积大于约60mum2。 电缆光纤具有小于约1300nm的截止波长。 通过减少诸如四波混频（FWM）的非线性效应，该光纤允许在两个频带（1310nm和1550nm）中的波分复用（WDM）操作。
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公开(公告)号：US06507689B2
公开(公告)日：2003-01-14
申请号：US09984170
申请日：2001-10-29
IPC分类号： G02B602
CPC分类号： G02B6/03644 , G02B6/02009 , G02B6/02219 , G02B6/03694
摘要： An optical transmission fiber has a refractive index profile with an area of increased index of refraction at the inner core of the fiber, an annular region positioned radially outward from the inner core with an index of refraction exceeding the index of the inner core, and at least a low dopant content region in a cross-sectional region between the inner core and the annular region. A low loss cladding layer surrounds the core region. The optical transmission fiber with this segmented core profile provides a high effective area, low non-linearity coefficient, nonzero dispersion, and relatively flat dispersion slope.
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公开(公告)号：US06715323B1
公开(公告)日：2004-04-06
申请号：US09573702
申请日：2000-05-19
申请人： Giacomo Stefano Roba , Roberto Pata
发明人： Giacomo Stefano Roba , Roberto Pata
IPC分类号： C03B37023
CPC分类号： C03B37/02718 , C03B2205/55
摘要： The present invention relates to a method and apparatus for cooling an optical fiber during the drawing process of said fiber. In particular the present method for cooling an optical fiber comprises flowing a cooling gas onto the optical fiber wherein the flow direction of the cooling gas is substantially transversal with respect the longitudinal axis of the fiber. It has been found that by employing a flow of cooling gas being substantially transversal to the longitudinal axis of the drawn fiber, the cooling efficiency of the fiber may be substantially improved. The apparatus according to the invention comprises a hollow elongated body, said hollow elongated body having at least one wall defining an internal elongated space through which the drawn fiber passes wherein the at least one wall of said hollow elongated body is provided with at least one longitudinal opening through which a cooling gas is introduced into the hollow body and at least one longitudinal opening through which said cooling gas is removed from said hollow body.
摘要翻译： 本发明涉及一种用于在所述光纤的拉丝过程中冷却光纤的方法和装置。特别地，本发明的用于冷却光纤的方法包括将冷却气体流到光纤上，其中冷却气体的流动方向为 相对于纤维的纵轴基本上是横向的。已经发现，通过采用基本上横贯拉伸纤维的纵向轴线的冷却气体流，可以显着改善纤维的冷却效率。根据 本发明包括中空细长体，所述中空细长体具有限定内部细长空间的至少一个壁，所述拉伸纤维通过该细长空间，其中所述中空细长体的至少一个壁设置有至少一个纵向开口，通过该纵向开口 冷却气体被引入中空体和至少一个纵向开口 从所述中空体中除去冷却气体。
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公开(公告)号：US06550282B2
公开(公告)日：2003-04-22
申请号：US09741882
申请日：2000-12-22
申请人： Giacomo Stefano Roba , Roberto Pata
发明人： Giacomo Stefano Roba , Roberto Pata
IPC分类号： C03B37022
CPC分类号： C03C25/12 , C03B37/032 , C03B2203/36 , C03B2205/06 , C03B2205/42 , C03C25/005
摘要： A method for manufacturing an optical fiber (100) having low PMD, comprises the steps of: a) heating at least one end portion (3a) of a preform (3); b) drawing an optical fiber (100) from a free end of said heated end portion (3a) along a fiber drawing axis (I—I); c) coating said optical fiber (100) with a suitable coating material; d) applying to said coated optical fiber (100) a torque about said fiber drawing axis (I—I), e) winding said coated optical fiber (100) onto a collecting spool (9). According to the invention, step d) is carried out by means of a pulley (16) supported upstream of said collecting spool (9) and rotated about the fiber drawing axis (I—I), said optical fiber (100) being wound up onto said pulley (16) for an angle of at least about 360°. Advantageously, such method also allows to notably increase the amount of optical fiber produced per unit of time with respect to the prior art.
摘要翻译： 一种制造具有低PMD的光纤（100）的方法，包括以下步骤：a）加热预成型件（3）的至少一个端部（3a）; b）从自由端拉出光纤（100） 的所述加热端部（3a）沿着拉丝轴线（II）; c）用合适的涂层材料涂覆所述光纤（100）; d）向所述涂覆的光纤（100）施加围绕所述光纤拉伸轴线 （II），e）将所述涂覆的光纤（100）卷绕到收集卷轴（9）上。 根据本发明，步骤d）通过支撑在所述收集线轴（9）上游并绕光纤拉丝轴线（II）旋转的滑轮（16）进行，所述光纤（100）被卷绕到所述 滑轮（16）至少约360°的角度。 有利地，这种方法还允许相对于现有技术显着增加每单位时间产生的光纤的量。
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10.发明授权Device and method for manufacturing a preform for optical fibres by chemical vapour deposition 有权通过化学气相沉积制造光纤预制棒的装置和方法公开(公告)号：US08387416B2
公开(公告)日：2013-03-05
申请号：US12267910
申请日：2008-11-10
IPC分类号： C03B37/018
CPC分类号： C03B37/0144 , C03B37/01202 , C03B37/01406 , C03B37/0142 , C03B37/01486 , C03B2207/62 , C03B2207/66 , Y02P40/57
摘要： A method and device for manufacturing a preform for optical fibers through chemical deposition on a substrate for deposition arranged vertically is described, comprising a chemical deposition chamber including at least one gripping member rotatably mounted about an axis Z-Z and adapted to hold at least one end of at least one elongated element constituting a substrate for chemical deposition for the formation of a preform for optical fibers. The chamber includes, moreover, at least one burner which is mobile along a direction Z substantially parallel to said axis Z-Z and adapted to deposit, on said at least one elongated element, a chemical substance for the formation of a preform and at least one suction element for collecting exhaust chemical substances, said at least one suction element being arranged on the opposite side to said at least one burner with respect to said axis Z-Z and being mobile along said direction Z. Said at least one suction element is advantageously positioned at a different height (preferably lower) with respect to that of said at least one burner to optimise the fluid dynamic conditions inside the chemical deposition chamber.
摘要翻译： 描述了一种用于通过化学沉积制造用于光纤的预成型件的方法和装置，所述方法和装置用于垂直布置的用于沉积的基板上，包括化学沉积室，其包括至少一个夹持构件，所述夹持构件围绕轴线ZZ可旋转地安装，并且适于保持 至少一个细长元件构成用于形成用于光纤的预成型体的用于化学沉积的基底。 此外，所述腔室还包括至少一个燃烧器，所述燃烧器沿着基本上平行于所述轴线ZZ的方向Z移动并且适于在所述至少一个细长元件上沉积用于形成预成型件的化学物质，并且至少一个吸力 所述至少一个抽吸元件相对于所述轴线ZZ布置在所述至少一个燃烧器的相对侧上，并且沿着所述方向Z可移动。所述至少一个吸入元件有利地位于 相对于所述至少一个燃烧器的高度（优选地较低），以优化化学沉积室内的流体动力学条件。
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