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1. 发明授权

US08387416B2 Device and method for manufacturing a preform for optical fibres by chemical vapour deposition 有权
标题翻译：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
申请人： Giacomo Stefano Roba , Massimo Nutini , Marco Ruzzier , Franco Veronelli
发明人： Giacomo Stefano Roba , Massimo Nutini , Marco Ruzzier , Franco Veronelli
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。

2. 发明申请

US20090325111A1 METHOD AND BURNER FOR MANUFACTURING A GLASS OPTICAL FIBRE PREFORM BY VAPOUR DEPOSITION 审中-公开
标题翻译：用于通过蒸气沉积制造玻璃光纤预制件的方法和燃烧器
公开(公告)号：US20090325111A1
公开(公告)日：2009-12-31
申请号：US12503578
申请日：2009-07-15
申请人： Giacomo Stefano Roba , Franco Veronelli , Massimo Nutini
发明人： Giacomo Stefano Roba , Franco Veronelli , Massimo Nutini
IPC分类号： F23D14/32
CPC分类号： F23L7/00 , C03B19/1423 , C03B37/0142 , C03B2207/06 , C03B2207/20 , C03B2207/42 , C03B2207/87 , F23D14/24 , F23D14/32 , F23L2900/07002
摘要： A method is disclosed for feeding a flow of gas to a burner for manufacturing an optical fibre preform, said burner comprising: a plurality of coaxial tubes, each two adjacent coaxial tubes defining an annular channel between themselves; an annular gas distribution chamber at one extremity of said annular channels and in fluid communication therewith, said annular distribution chamber being delimited in the radial direction by an inner and an outer surface; said method comprising introducing the flow of gas into the distribution chamber so that the direction of its radially outermost portion is tangential to the radially outer surface of the distribution chamber. The method allows obtaining a better gas velocity distribution in said annular channels. A burner for performing said method is also disclosed.
摘要翻译：公开了一种用于将气流供应到用于制造光纤预制件的燃烧器的方法，所述燃烧器包括：多个同轴管，每个两个相邻的同轴管在它们之间限定环形通道; 环形气体分配室，位于所述环形通道的一个末端并与其流体连通，所述环形分配室通过内表面和外表面沿径向界定; 所述方法包括将气流引入分配室，使得其径向最外部分的方向与分配室的径向外表面相切。该方法允许在所述环形通道中获得更好的气体速度分布。还公开了一种用于执行所述方法的燃烧器。

3. 发明授权

US07587914B2 Burner for manufacturing a glass optical fibre preform by vapour deposition 失效
标题翻译：用于通过气相沉积制造玻璃光纤预制件的燃烧器
公开(公告)号：US07587914B2
公开(公告)日：2009-09-15
申请号：US10478835
申请日：2002-05-27
申请人： Giacomo Stefano Roba , Franco Veronelli , Massimo Nutini
发明人： Giacomo Stefano Roba , Franco Veronelli , Massimo Nutini
IPC分类号： C03B37/018
CPC分类号： F23L7/00 , C03B19/1423 , C03B37/0142 , C03B2207/06 , C03B2207/20 , C03B2207/42 , C03B2207/87 , F23D14/24 , F23D14/32 , F23L2900/07002
摘要： A method for feeding a flow of gas to a burner for manufacturing an optical fiber preform. The burner has a plurality of coaxial tubes, each two adjacent coaxial tubes defining an annular channel between themselves; an annular gas distribution chamber at one extremity of the annular channels and in fluid communication therewith, the annular distribution chamber being delimited in the radial direction by an inner and an outer surface. The flow of gas is introduced into the distribution chamber so that the direction of its radially outermost portion is tangential to the radially outer surface of the distribution chamber. The method allows obtaining a better gas velocity distribution in the annular channels.
摘要翻译：一种用于将气体流供给到用于制造光纤预制件的燃烧器的方法。燃烧器具有多个同轴管，每个两个相邻的同轴管在它们之间限定环形通道; 环形气体分配室，位于环形通道的一个末端并与其流体连通，环形分配室通过内表面和外表面在径向上限定。气体流被引入分配室，使得其径向最外部分的方向与分配室的径向外表面相切。该方法允许在环形通道中获得更好的气体速度分布。

4. 发明授权

US07409126B2 Optical fiber having a low polarization mode dispersion and process and apparatus for producing it 失效
标题翻译：具有低偏振模色散的光纤及其制造方法和装置
公开(公告)号：US07409126B2
公开(公告)日：2008-08-05
申请号：US10528836
申请日：2003-09-22
申请人： Giacomo Stefano Roba , Davide Sarchi , Martino Travagnin , Alexis Debut
发明人： Giacomo Stefano Roba , Davide Sarchi , Martino Travagnin , Alexis Debut
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。

5. 发明授权

US07317858B2 Optical fiber with reduced attenuation loss 有权
标题翻译：具有降低衰减损耗的光纤
公开(公告)号：US07317858B2
公开(公告)日：2008-01-08
申请号：US10512241
申请日：2002-04-24
申请人： Giacomo Stefano Roba , Lidia Terruzzi , Sabrina Fogliani , Marco Armondi , Sandra Joanna Nagelvoort , Johannes Adrianus Van Eekelen , Adrianus Gijsbertus Maria Abel , Gouke Dirk Jan Geus , Duurt Pieter Willem Alkema
发明人： Giacomo Stefano Roba , Lidia Terruzzi , Sabrina Fogliani , Marco Armondi , Sandra Joanna Nagelvoort , Johannes Adrianus Van Eekelen , Adrianus Gijsbertus Maria Abel , Gouke Dirk Jan Geus , Duurt Pieter Willem Alkema
IPC分类号： G02B6/02
CPC分类号： G02B6/02033 , C03C25/106 , G02B1/048 , G02B6/02395 , C08L75/04
摘要： An optical fiber having an internal glass portion, a first coating layer surrounding the glass portion and a second coating layer surrounding the first coating layer. The first coating layer is formed from a cured polymeric material obtained by curing a radiation curable composition having a radiation curable oligomer having a backbone derived from polypropylene glycol and a dimer acid based polyester polyol. The cured polymeric material has: (a) a hardening temperature (Th) from −10° C. to about −20° C. and a modulus measured at the Th lower than 5.0 MPa; or (b) a hardening temperature (Th) from −20° C. to about −30° C. and a modulus measured at the Th lower than 20.0 MPa; or (c) a hardening temperature (Th) lower than about −30° C. and a modulus measured at the Th lower than 70.0 MPa.
摘要翻译：具有内玻璃部分的光纤，围绕玻璃部分的第一涂层和围绕第一涂层的第二涂层。第一涂层由固化的聚合物材料形成，该聚合材料通过固化具有衍生自聚丙二醇的主链和二聚酸基聚酯多元醇的可辐射固化低聚物的可辐射固化组合物而获得。固化的聚合物材料具有：（a）从-10℃至约-20℃的硬化温度（Th），在低于5.0MPa的Th下测量的模量; 或（b）-20℃至约-30℃的硬化温度（Th），在低于20.0MPa的Th下测得的模量; 或（c）低于约-30℃的硬化温度（Th）和在低于70.0MPa的Th下测量的模量。

6. 发明授权

US06595454B2 Optical fiber tensioning device and method of controlling the tension applied to an optical fiber 有权
标题翻译：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
申请人： Giacomo Stefano Roba , Roberto Pata , Franco Veronelli
发明人： Giacomo Stefano Roba , Roberto Pata , Franco Veronelli
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。

7. 发明授权

US06321016B1 Optical fiber having low non-linearity for WDM transmission 有权
标题翻译：用于WDM传输的具有低非线性的光纤
公开(公告)号：US06321016B1
公开(公告)日：2001-11-20
申请号：US09335509
申请日：1999-06-18
申请人： Bartolomeo Italo Tirloni , Francesco Sartori , Davide Sarchi , Giacomo Stefano Roba
发明人： Bartolomeo Italo Tirloni , Francesco Sartori , Davide Sarchi , Giacomo Stefano Roba
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。

8. 发明申请

US20090205374A1 Method and Apparatus for the Production of Optical Fibers With Reduced Polarization Mode Dispersion 审中-公开
标题翻译：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
申请人： Roberto Pata , Giacomo Stefano Roba , Davide Sarchi , Marco Tedeschi
发明人： Roberto Pata , Giacomo Stefano Roba , Davide Sarchi , Marco Tedeschi
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。

9. 发明授权

US07461524B2 Device and method for manufacturing a preform for optical fibres by chemical vapour deposition 有权
标题翻译：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：US07461524B2
公开(公告)日：2008-12-09
申请号：US10481748
申请日：2002-06-19
申请人： Giacomo Stefano Roba , Massimo Nutini , Marco Ruzzier , Franco Veronelli
发明人： Giacomo Stefano Roba , Massimo Nutini , Marco Ruzzier , Franco Veronelli
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 fibres through chemical deposition on a substrate for deposition arranged vertically. A chemical deposition chamber includes 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 substrate for chemical deposition for the formation of a preform. The chamber includes at least one burner which is mobile along a direction Z substantially parallel to the axis Z-Z and adapted to deposit on the elongated substrate, a chemical substance for the formation of a preform and at least one suction element for collecting exhaust chemical substances. The suction element is arranged on the opposite side of the burner with respect to the axis Z-Z and is mobile along the direction Z and is positioned at a lower height than the burner.
摘要翻译：一种用于通过化学沉积制造用于光纤的预制件的方法和装置，用于垂直布置的用于沉积的基板。化学沉积室包括至少一个夹持构件，该夹持构件围绕轴线Z-Z可旋转地安装，并且适于保持用于化学沉积的至少一个细长衬底的至少一端以形成预成型件。所述腔室包括至少一个燃烧器，所述燃烧器沿着基本上平行于轴线Z-Z的方向Z移动，并且适于沉积在细长衬底上，用于形成预成型件的化学物质和用于收集排气化学物质的至少一个吸入元件。抽吸元件相对于轴线Z-Z布置在燃烧器的相对侧上，并且沿着Z方向移动，并且位于比燃烧器低的高度处。

10. 发明授权

US07299659B2 Method for manufacturing optical fiber preforms 失效
标题翻译：制造光纤预制棒的方法
公开(公告)号：US07299659B2
公开(公告)日：2007-11-27
申请号：US10451076
申请日：2001-11-30
申请人： Giacomo Stefano Roba , Massimo Nutini
发明人： Giacomo Stefano Roba , Massimo Nutini
IPC分类号： C03B37/018 , F23D11/00
CPC分类号： C03B37/0142 , C03B2207/06 , C03B2207/08 , C03B2207/16 , C03B2207/20 , C03B2207/24 , C03B2207/40 , C03B2207/42 , F23D14/22 , F23D14/32 , F23D14/583
摘要： Method and burner for increasing the deposition rate of porous glass deposit in the manufacture of optical preforms, by modifying the cross-sectional shape of the flow of glass particles impacting onto a target preform. In particular, the cross-section of the flow of glass particles is modified by increasing the dimension of the flow from a circular cross-section to one having a major and minor axis in a direction substantially perpendicular to the longitudinal axis of the target preform.
摘要翻译：方法和燃烧器，用于通过改变撞击到目标预制件上的玻璃颗粒的流动的横截面形状来增加多孔玻璃沉积物在制造光学预型件中的沉积速率。特别地，玻璃颗粒流动的横截面通过将流体从圆形横截面增大到具有基本上垂直于目标预制件的纵向轴线的方向的长轴和短轴的尺寸而被修改。

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