公开(公告)号：US20050072192A1

公开(公告)日：2005-04-07

申请号：US10499022

申请日：2001-12-21

Applicant: Marco Arimondi ,  Giacomo Roba

Inventor： Marco Arimondi ,  Giacomo Roba

IPC: C03B19/12 ,  C03B37/016 ,  C03B37/075

CPC classification number: C03B37/016 ,  C03B19/12 ,  C03B2203/14 ,  C03B2203/42

Abstract: In a process for manufacturing a micro-structured optical fibre, an intermediate preform is made by forming a sol; pouring the sol in a cylindrical mould including a set of structural generating elements defining internal structural elements of the intermediate preform; transforming the sol into a gel so as to obtain a cylindrical gel body defining the intermediate preform; and removing the cylindrical intermediate preform from the mould.

Abstract translation: 在制造微结构光纤的方法中，通过形成溶胶来制造中间预制件; 将溶胶倒入包括限定中间预制件的内部结构元件的一组结构产生元件的圆柱形模具中; 将溶胶转化成凝胶，以获得限定中间预型体的圆柱形凝胶体; 并从模具中取出圆柱形中间预成型件。

公开(公告)号：US4921516A

公开(公告)日：1990-05-01

申请号：US744651

申请日：1985-06-13

Applicant: Giacomo Roba

Inventor： Giacomo Roba

IPC: C03B19/14 ,  C03B37/018 ,  G02B6/00

CPC classification number: C03B37/01869 ,  C03B2201/06 ,  C03B2201/28 ,  C03B2201/31

Abstract: In producing a preform for an optical fiber by MCVD technology, involving the buildup of a core matrix of doped silica layers inside a glass tube with subsequent thermal collapse of the structure, a layer of dopant is deposited on the inner surface of the finished core matrix before the collapse. The thickness of this dopant layer, which advantageously is in a colloidal state, progressively diminishes along the tube axis in a direction away from an end of the tube at which the collapse begins. The law of thickness variation is chosen to maintain an internal gas pressure of vaporized dopant equal to the vapor pressure of the dopant in the core material at the collapsing temperature, in order to prevent the appearance of a paraxial dip in the refractive-index profile of an optical fiber subsequently drawn from the collapsed preform.

Abstract translation: 在通过MCVD技术生产用于光纤的预成型件时，涉及在玻璃管内形成掺杂的二氧化硅层的核心矩阵，随后结构的热塌陷，在成品芯基体的内表面上沉积一层掺杂剂 崩溃前 有利地是胶体状态的该掺杂剂层的厚度沿着远离管的端部的方向沿着管轴逐渐减小，在该方向上开始崩溃。 选择厚度变化规律以将蒸发掺杂物的内部气体压力保持在塌陷温度下等于芯材料中掺杂剂的蒸汽压力，以防止在折射率分布中的近轴下沉 随后从折叠的预成型件中拉出光纤。

公开(公告)号：US4711652A

公开(公告)日：1987-12-08

申请号：US840422

申请日：1986-03-17

Applicant: Giacomo Roba ,  Eros Modone

Inventor： Giacomo Roba ,  Eros Modone

IPC: C01B9/02 ,  C01B9/08 ,  C01F7/50 ,  C01F7/58 ,  C01G19/04 ,  C01G21/16 ,  C03B8/00 ,  C03B8/02 ,  C03C3/32 ,  C03C13/04 ,  C03B19/06 ,  C03B37/018

CPC classification number: C01B9/02 ,  C01B9/08 ,  C01F7/50 ,  C01F7/58 ,  C01G19/04 ,  C01G21/16 ,  C03C3/32 ,  C03C3/325 ,  Y10S65/16

Abstract: The process for manufacturing halide glasses uses a reaction between organometallic and inter-halide or halide-derived compounds, started at a temperature ranging from the highest melting temperature and the lowest boiling temperature of the compounds used.

Abstract translation: 用于制造卤化物玻璃的方法使用在从所用化合物的最高熔融温度和最低沸点温度范围开始的有机金属和卤化物或卤化物衍生化合物之间的反应。

公开(公告)号：US4659354A

公开(公告)日：1987-04-21

申请号：US817025

申请日：1986-01-08

Applicant: Giacomo Roba

Inventor： Giacomo Roba

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/029 ,  C03B37/12 ,  C03C25/10 ,  C03C25/22 ,  C03C25/02

CPC classification number: C03C25/223 ,  C03B37/02718 ,  C03B37/029 ,  C03C25/107 ,  C03B2205/56 ,  Y02P40/57

Abstract: The method allows surface defect reduction in silica optical-fibers by enriching the external layer by silica bonded carbon atoms within the silica lattice: SiC.SiO.sub.2. Carbon is obtained from chemical reaction directly during the drawing step. Volume defects are reduced by rapidly cooling the fiber structure heated up to vitreous transition temperature.

Abstract translation: 该方法通过在二氧化硅晶格内的二氧化硅键合的碳原子富集外部层：SiC.SiO 2来使二氧化硅光纤中的表面缺陷减少。 在拉伸步骤中直接从化学反应获得碳。 通过快速冷却加热到玻璃化转变温度的纤维结构来减小体积缺陷。

公开(公告)号：US4445918A

公开(公告)日：1984-05-01

申请号：US390801

申请日：1982-06-21

Applicant: Eros Modone ,  Giacomo Roba

Inventor： Eros Modone ,  Giacomo Roba

IPC: C03B8/04 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04 ,  G02B6/44 ,  C03B37/07

CPC classification number: C03C3/06 ,  C03B37/01413 ,  C03B37/01807 ,  C03C13/047 ,  G02B6/4492 ,  C03B2201/22 ,  C03B2207/81 ,  C03C2201/21 ,  C03C2201/22 ,  C03C2203/54 ,  Y10S65/90

Abstract: Vapor deposition of doped silica in a reaction chamber on a rotating supporting surface, in the manufacture of a preform for the drawing of an optical fiber, is accompanied by the continuous admixture of deuterium with a flow of carrier gas, specifically oxygen, by which the reactants are transported to the reaction chamber. An isotopic substitution of deuterium for the hydrogen of hydroxyl groups in the reaction products shifts the major absorption peaks to wavelengths outside the minimum-attenuation range of 0.7 to 1.6.mu. used for fiber-optical signaling. The proper ratio of deuterium to carrier gas is maintained with the aid of a mixer having two compartments separated by a perforated diaphragm or a thin metallic foil, one compartment being connected to a deuterium tank while the other communicates with a conduit through which the vapors entrained by the carrier gas pass to the reaction chamber.

Abstract translation: 掺杂二氧化硅在旋转支撑表面上的反应室中的气相沉积，在制造用于拉制光纤的预成型件时，伴随着氘与载气流，特别是氧气的连续混合，由此， 反应物被输送到反应室。 反应产物中氘氢羟基的同位素替代反应产物中羟基的氢将主要吸收峰转移到用于光纤信号的0.7至1.6微米的最小衰减范围之外的波长。 借助于具有由穿孔隔膜或薄金属箔隔开的两个隔室的混合器来维持氘与载气的适当比例，一个隔室连接到氘罐，而另一个隔室与导管夹带，蒸汽夹带 通过载气通入反应室。

公开(公告)号：US4419958A

公开(公告)日：1983-12-13

申请号：US331920

申请日：1981-12-17

Applicant: Giacomo Roba

Inventor： Giacomo Roba

IPC: B05C3/12 ,  B05D1/18 ,  C03C25/10 ,  C03C25/12 ,  C03C25/18 ,  B05C11/02

CPC classification number: C03C25/12 ,  C03C25/18 ,  Y10S118/18 ,  Y10S425/808

Abstract: A nozzle used in the coating of optical fibers with a protective resin layer comprises an aluminum body split into two symmetrical halves with cavities which upon assembly form a frustoconical funnel terminating at its narrower lower end in a coaxially converging outlet port. The cavities are machined in solid aluminum blocks whereupon each block is anodized in sulfuric acid to form thereon an abrasion-resistant oxide layer with few, small pores which may be sealed by an aftertreatment in hot de-ionized water.

Abstract translation: 用于具有保护性树脂层的光纤涂层中的喷嘴包括被分成具有空腔的两个对称半部的铝体，其在组装时形成截头锥形漏斗，在其较窄的下端终止于同轴会聚的出口。 这些空腔以固体铝块加工，随后每个块在硫酸中阳极氧化以在其上形成具有少量小孔的耐磨氧化物层，其可以通过在热去离子水中的后处理来密封。

公开(公告)号：US20060228083A1

公开(公告)日：2006-10-12

申请号：US11442279

申请日：2006-05-30

Applicant: Giacomo Roba ,  Lidia Terruzzi ,  Sabrina Fogliani ,  Marco Arimondi ,  Sandra Nagelvoort ,  Johannes Van Eekelen ,  Adrianus Abel ,  Gouke Geus ,  Duurt Alklma

Inventor： Giacomo Roba ,  Lidia Terruzzi ,  Sabrina Fogliani ,  Marco Arimondi ,  Sandra Nagelvoort ,  Johannes Van Eekelen ,  Adrianus Abel ,  Gouke Geus ,  Duurt Alklma

IPC: G02B6/036

CPC classification number: C03C25/1065 ,  G02B6/02395

Abstract: Optical fiber capable of controlling attenuation losses caused by microbending on the signal transmitted thereby. The optical fiber comprises: a) an internal glass portion; b) a first coating layer of a first polymeric material surrounding said glass portion; and c) a second coating layer of a second polymeric material surrounding said first coating layer, wherein said first polymeric material has a hardening temperature lower than −10° C., an equilibrium tensile modulus lower than 1.5 MPa, wherein said first coating layer has a thickness of from 18 μm to 28 μm and wherein said second coating layer has a thickness of from 10 μm to 20 μm.

Abstract translation: 光纤能够控制对由此传输的信号的微弯曲引起的衰减损耗。 光纤包括：a）内玻璃部分; b）围绕所述玻璃部分的第一聚合物材料的第一涂层; 和c）围绕所述第一涂层的第二聚合材料的第二涂层，其中所述第一聚合物材料具有低于-10℃的硬化温度，低于1.5MPa的平衡拉伸模量，其中所述第一涂层具有 厚度为18μm至28μm，并且其中所述第二涂层的厚度为10μm至20μm。

公开(公告)号：US20060147166A1

公开(公告)日：2006-07-06

申请号：US10528836

申请日：2003-09-22

Applicant: Giacomo Roba ,  Davide Sarchi ,  Martino Travagnin ,  Alexis Debut

Inventor： Giacomo Roba ,  Davide Sarchi ,  Martino Travagnin ,  Alexis Debut

IPC: G02B6/02

CPC classification number: B65H49/02 ,  C03B37/02745 ,  C03B37/032 ,  C03B37/12 ,  C03B2203/19 ,  C03B2203/20 ,  C03B2203/36 ,  C03B2205/06 ,  G02B6/02285

Abstract: 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.

Abstract translation: 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施加单向捻度的扭转装置，以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。

公开(公告)号：US20060127019A1

公开(公告)日：2006-06-15

申请号：US10531954

申请日：2002-10-23

Applicant: Luca Castellani ,  Giovanni Brandi ,  Mauro Maritano ,  Franco Peruzzotti ,  Giacomo Roba ,  Sabrina Fogliani ,  Lidia Terruzzi

Inventor： Luca Castellani ,  Giovanni Brandi ,  Mauro Maritano ,  Franco Peruzzotti ,  Giacomo Roba ,  Sabrina Fogliani ,  Lidia Terruzzi

IPC: G02B6/036

CPC classification number: C03C25/106 ,  G02B6/02395

Abstract: Optical fiber having a glass portion; at least one protective coating of thermoplastic material having at least one thermoplastic elastomer; the thermoplastic material having the following characteristics: a modulus of elasticity value at +25° C. lower than 150 MPa, preferably at least 10 Mpa, more preferably higher than 20 Mpa, and a Vicat point higher than 85° C., preferably higher than 120° C., more preferably lower than 350° C. Preferably, the coating is a single protective coating directly positioned onto the glass portion.

Abstract translation: 具有玻璃部分的光纤; 至少一种具有至少一种热塑性弹性体的热塑性材料保护涂层; 热塑性材料具有以下特征：弹性模量值在+ 25℃低于150MPa，优选至少10Mpa，更优选高于20Mpa，维卡点高于85℃，优选更高 优选低于350℃。优选地，涂层是直接定位在玻璃部分上的单个保护涂层。

公开(公告)号：US20060072889A1

公开(公告)日：2006-04-06

申请号：US10512241

申请日：2002-04-24

Applicant: Giacomo Roba ,  Lidia Terruzzi ,  Sabrina Fogliani ,  Marco Armondi ,  Sandra Nagelvoort ,  Johannes Van Eekelen ,  Adrianus Abel ,  Gouke Geus ,  Duurt Alkema

Inventor： Giacomo Roba ,  Lidia Terruzzi ,  Sabrina Fogliani ,  Marco Armondi ,  Sandra Nagelvoort ,  Johannes Van Eekelen ,  Adrianus Abel ,  Gouke Geus ,  Duurt Alkema

IPC: G02B6/036

CPC classification number: G02B6/02033 ,  C03C25/106 ,  G02B1/048 ,  G02B6/02395 ,  C08L75/04

Abstract: 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.

Abstract translation: 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。