公开(公告)号：US4657575A

公开(公告)日：1987-04-14

申请号：US779081

申请日：1985-09-20

Applicant: Giacomo Roba

Inventor： Giacomo Roba

IPC: C03B37/018 ,  C03C13/04 ,  G02B6/00 ,  C03C25/02 ,  C03B37/025

CPC classification number: C03C13/045

Abstract: The method of fabricating alumina-doped silica fibers allows the production of silica and dopant with reactions between gaseous chemical compounds. Alumina is obtained from a reaction between oxygen and a low-temperature vaporizable organometallic compound. The optical fibers produced do not present the refraction-index dip and exhibit low attenuation.

Abstract translation: 制造氧化铝掺杂的二氧化硅纤维的方法允许通过气态化合物之间的反应生产二氧化硅和掺杂剂。 氧化铝由氧和低温可蒸发的有机金属化合物之间的反应获得。 所生产的光纤不存在折射率下降并且呈现低衰减。

公开(公告)号：US4608070A

公开(公告)日：1986-08-26

申请号：US650297

申请日：1984-09-12

Applicant: Giacomo Roba

Inventor： Giacomo Roba

IPC: C03B37/018 ,  G02B6/00 ,  C03B37/027

CPC classification number: C03B37/01815

Abstract: The process allows a uniform layer of glass particles, forming the preform, to be deposited on the internal wall of a supporting tube rotated around its axis. A suitable relationship is provided to determine the temperature distribution in the deposition zone. The apparatus makes use of different types of heat sources for generating inside the tube a temperature with the distribution required by the process.

Abstract translation: 该方法允许形成预制件的均匀的玻璃颗粒层沉积在围绕其轴线旋转的支撑管的内壁上。 提供合适的关系以确定沉积区中的温度分布。 该设备利用不同类型的热源在管内产生具有该过程所需分布的温度。

公开(公告)号：US20050207715A1

公开(公告)日：2005-09-22

申请号：US10512238

申请日：2002-04-24

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: C03C25/10 ,  G02B6/02 ,  G02B6/44 ,  G02B6/22

CPC classification number: C03C25/1065 ,  G02B6/02395

Abstract: A method for controlling attenuation losses caused by microbending on the signal transmitted by an optical fiber having an internal glass portion. A first coating layer of a first polymeric material surrounds the glass portion and a second coating layer of a second polymeric material surrounds the first coating layer. The first polymeric material has a hardening temperature lower than 10° and an equilibrium modulus lower than 1.5 MPa.

Abstract translation: 一种用于控制由具有内部玻璃部分的光纤传输的信号的微弯曲引起的衰减损耗的方法。 第一聚合材料的第一涂层围绕玻璃部分，第二聚合物材料的第二涂层包围第一涂层。 第一种聚合物材料具有低于10°的硬化温度和低于1.5MPa的平衡模量。

公开(公告)号：US4659353A

公开(公告)日：1987-04-21

申请号：US817024

申请日：1986-01-08

Applicant: Giacomo Roba

Inventor： Giacomo Roba

IPC: G02B6/00 ,  C03B37/018 ,  G02B6/024 ,  C03C25/02 ,  C03B37/027

CPC classification number: C03B37/01815 ,  C03B2203/24 ,  C03B2203/30

Abstract: The method uses a raw-material and dopant-deposition technique, which requires vapor-state reactants and thermal sources for producing a temperature gradient suited to obtain a circularly and radially varying refractive-index profile in the supporting tube.

Abstract translation: 该方法使用原料和掺杂剂沉积技术，其需要蒸气态反应物和热源来产生适于在支撑管中获得圆形和径向变化的折射率分布的温度梯度。

公开(公告)号：US20070263972A1

公开(公告)日：2007-11-15

申请号：US10530489

申请日：2002-10-07

Applicant: Giacomo Roba ,  Lidia Terruzzi ,  Sabrina Fogliani ,  Luca Castellani ,  Emiliano Resmini ,  Raffaella Donetti ,  Lisa Grassi

Inventor： Giacomo Roba ,  Lidia Terruzzi ,  Sabrina Fogliani ,  Luca Castellani ,  Emiliano Resmini ,  Raffaella Donetti ,  Lisa Grassi

IPC: C03C25/10 ,  C08F290/06 ,  C08G18/67 ,  G02B6/00

CPC classification number: C09D175/16 ,  C03C25/106 ,  C08G18/672 ,  C08G18/48

Abstract: An optical fiber having: a) a glass portion; and b) at least one protective coating layer disposed to surround the glass portion, the protective coating layer having a modulus of elasticity value between −40° C. and +60° C. between 5 MPa and 600 MPa, preferably not higher than 500 MPa, more preferably not higher than 450 MPa and much more preferably not higher than 300. Preferably the protective coating layer is a single protective coating layer which is disposed in contact with the glass portion.

Abstract translation: 一种光纤，具有：a）玻璃部分; 和b）至少一个围绕玻璃部分设置的保护涂层，所述保护涂层的弹性模量值在-40℃至+ 60℃之间，在5MPa至600MPa之间，优选不高于500 更优选不高于450MPa，更优选不高于300.优选地，保护涂层是与玻璃部分接触设置的单个保护涂层。

公开(公告)号：US4738873A

公开(公告)日：1988-04-19

申请号：US845565

申请日：1986-03-28

Applicant: Giacomo Roba ,  Giuseppe Parisi

Inventor： Giacomo Roba ,  Giuseppe Parisi

IPC: G02B6/00 ,  C03B37/018 ,  C03C13/04 ,  B05D5/06

CPC classification number: C03C13/045

Abstract: The method allows the production of silica and dopant with reactions among gaseous chemical compounds. The optical fibers produced do not present dip and exhibit low attenuation. Carbon dioxide is used as the oxidizer and organometallic aluminum compounds are used to obtain the dopant; silica is obtained from organometallic silicon compounds or silicon tetrachloride.

Abstract translation: 该方法允许在气态化合物之间产生二氧化硅和掺杂剂。 所生产的光纤不会出现浸渍并表现出低的衰减。 二氧化碳用作氧化剂，有机金属铝化合物用于获得掺杂剂; 二氧化硅由有机金属硅化合物或四氯化硅获得。

公开(公告)号：US4627865A

公开(公告)日：1986-12-09

申请号：US650296

申请日：1984-09-12

Applicant: Giacomo Roba

Inventor： Giacomo Roba

IPC: C03B37/018 ,  C03C13/04 ,  G02B6/00

CPC classification number: C03C13/042 ,  Y10S65/16

Abstract: The process of manufacturing optical fibers of extremely low loss in the medium infrared permits the fabrication of glass preforms having as basic materials metal-fluorides obtained from vapor-phase reactants.

Abstract translation: 制造中等红外损失极低的光纤的制造方法允许制造具有从气相反应物获得的金属氟化物作为碱性材料的玻璃预制件。

公开(公告)号：US4624692A

公开(公告)日：1986-11-25

申请号：US805848

申请日：1985-12-05

Applicant: Giacomo Roba

Inventor： Giacomo Roba

IPC: C03B37/014 ,  C03B8/02 ,  C03B19/12 ,  C03B37/016 ,  C03B37/027 ,  G02B6/00 ,  C03B37/023

CPC classification number: C03B37/016

Abstract: The apparatus allows the continuous production of optical fibres (15) starting from liquid-phase reactants. They are injected into a pressurized vertical vessel (3), comprising a second coaxial vessel (4), which can be vertically displaced for the variations of the refractive-index profile. The first vessel supplies material for the cladding, the second for the fibre core.Suitable furnaces (6,9,14) help the reaction and allow preform sintering and drawing.

Abstract translation: 该装置允许从液相反应物开始连续生产光纤（15）。 它们被注入到加压的垂直容器（3）中，包括第二同轴容器（4），其可以垂直移位以用于折射率分布的变化。 第一个容器为包层提供材料，第二个用于纤维芯。 合适的炉子（6,9,14）有助于反应并允许预成型件烧结和拉制。

公开(公告)号：US20060010922A1

公开(公告)日：2006-01-19

申请号：US10516170

申请日：2002-06-28

Applicant: Marco Galante ,  Marco Arimondi ,  Giacomo Roba ,  Ilenia Santi

Inventor： Marco Galante ,  Marco Arimondi ,  Giacomo Roba ,  Ilenia Santi

IPC: C03B37/018

CPC classification number: C03B19/1415 ,  C03B37/01413 ,  C03B2207/85 ,  C03B2207/87 ,  C03B2207/88

Abstract: A method and device for vaporizing a liquid reactant. A vaporizing plate having a top surface defines a liquid flow channel, the channel being laterally delimited by edges having a height greater than a minimum thickness of liquid reactant required to generate vapor under film or nucleate boiling regime. A heating system is associated to the vaporizing plate for heating the liquid reactant over a minimum temperature required to generate vapor under nucleate or, preferably, film boiling regime. A cap covers the vaporizing plate to collect the vapor at a predetermined pressure and provided with a vapor exit and a liquid feeder feeds the liquid reactant onto the vaporizing plate.

Abstract translation: 一种用于蒸发液体反应物的方法和装置。 具有顶表面的蒸发板限定液体流动通道，该通道由边缘侧向限定，该边缘的高度大于在膜或成核沸腾状态下产生蒸气所需的液体反应物的最小厚度。 加热系统与蒸发板相关联，用于在成核或优选薄膜沸腾状态下在产生蒸气所需的最低温度下加热液体反应物。 盖子覆盖蒸发板以在预定压力下收集蒸气，并且设置有蒸气出口，液体进料器将液体反应物供给到蒸发板上。

公开(公告)号：US06885802B2

公开(公告)日：2005-04-26

申请号：US10362841

申请日：2001-09-07

Applicant: Guidö Oliveti ,  Francesco Ivan Pomarico ,  Giacomo Roba ,  Davide Sarchi ,  Francesco Sartori

Inventor： Guidö Oliveti ,  Francesco Ivan Pomarico ,  Giacomo Roba ,  Davide Sarchi ,  Francesco Sartori

IPC: G02B6/028 ,  G02B20060101 ,  G02B6/02 ,  G02B6/255 ,  G02B6/34 ,  H04B10/00 ,  H04B10/20 ,  H04B10/207 ,  H04J14/00 ,  H04J14/02

CPC classification number: G02B6/02276 ,  G02B6/02266 ,  G02B6/0281 ,  G02B6/0288 ,  G02B6/03611 ,  G02B6/2552 ,  G02B6/29377

Abstract: A network for distributing signals to a plurality of user having a distribution unit and a plurality of optical cables adapted to make the distribution unit communicate with the plurality of user equipment. In turn, each optical cable has an optical fibre having a core, a cladding and a predetermined simple refractive index profile Δn(r). Each optical fibre is adapted to guarantee a single-mode propagation at higher wavelengths than about 1260 nm and a few-mode propagation at about 850 nm, and each optical fibre has such refractive index profile Δn(r) as to guarantee macro-bending losses at 1550 nm that are less than about 0.5 dB and an intermodal delay Δτ at 850 nm that is less than or equal to, about 1 ns/Km.

Abstract translation: 用于向具有分配单元的多个用户分配信号的网络和适于使分配单元与多个用户设备通信的多个光缆。 依次，每根光缆具有一个具有芯，包层和预定简单折射率分布Deltan（r）的光纤。 每个光纤适用于保证在大约1260nm的波长和在约850nm处的多模传播的单模传播，并且每个光纤具有这样的折射率分布Deltan（r），以保证宏弯曲损耗 在小于约0.5dB的1550nm处，在850nm处的联合延迟Deltatau小于或等于约1ns / Km。