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1. 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。

2. 发明授权

US06922514B2 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：US06922514B2
公开(公告)日：2005-07-26
申请号：US10342882
申请日：2003-01-14
申请人： Bartolomeo Italo Tirloni , Francesco Gabriele Sartori , Davide Sarchi , Giacomo Stefano Roba
发明人： Bartolomeo Italo Tirloni , Francesco Gabriele Sartori , Davide Sarchi , Giacomo Stefano Roba
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。

3. 发明授权

US06507689B2 Optical fiber having low non-linearity for WDM transmission 有权
公开(公告)号：US06507689B2
公开(公告)日：2003-01-14
申请号：US09984170
申请日：2001-10-29
申请人： Bartolomeo Italo Tirloni , Francesco Gabriele Sartori , Davide Sarchi , Giacomo Stefano Roba
发明人： Bartolomeo Italo Tirloni , Francesco Gabriele 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.

4. 发明授权

US06633713B2 Optical system and method having low loss and non-linear effects 失效
标题翻译：具有低损耗和非线性效应的光学系统和方法
公开(公告)号：US06633713B2
公开(公告)日：2003-10-14
申请号：US09880766
申请日：2001-06-15
申请人： Bartolomeo Italo Tirloni , Giacomo Stefano Roba
发明人： Bartolomeo Italo Tirloni , Giacomo Stefano Roba
IPC分类号： G02B602
CPC分类号： G02B6/03644 , G02B6/02014 , G02B6/02257 , G02B6/02271 , G02B6/03611 , G02B6/03622 , G02B6/29377 , H04B10/25253
摘要： An apparatus and method for transmitting an optical signal. The invention is directed to a transmission line having first (16) and second (18) spans of single mode fiber. The fiber of the first span has a negative dispersion with an absolute value of between about 2.5 ps/nm/km and 10 ps/nm/km at the operating wavelength. The second span (18) is connected to the first span (16) and has a positive dispersion at the operating wavelength. The positive dispersion of the second span compensates for the negative dispersion of the first span such that the cumulative dispersion across the first and second spans is approximately zero. The increased dispersion of the first span coincides with characteristics to lower non-linear effects, permits a longer length of the second span, and helps lower attenuation in the transmission line.
摘要翻译：一种用于发送光信号的装置和方法。本发明涉及具有单模光纤的第一（ 16 ）和第二（ 18 ）的传输线。第一跨距的光纤在工作波长处具有绝对值在约2.5ps / nm / km和10ps / nm / km之间的负色散。第二个跨度（ 18 ）连接到第一个跨度（ 16 ），并在工作波长处具有正色散。第二跨度的正色散补偿第一跨度的负色散，使得跨越第一和第二跨度的累积色散近似为零。第一跨度的增加的色散与特性相一致，以降低非线性效应，允许第二跨度的更长的长度，并且有助于降低传输线中的衰减。

5. 发明授权

US06941054B2 Optical transmission link with low slope, raman amplified fiber 失效
标题翻译：光传输链路具有低斜率，拉曼放大光纤
公开(公告)号：US06941054B2
公开(公告)日：2005-09-06
申请号：US10362662
申请日：2001-08-22
申请人： Bartolomeo Italo Tirloni , Giacomo Stefano Roba
发明人： Bartolomeo Italo Tirloni , Giacomo Stefano Roba
IPC分类号： G02B6/036 , H01S3/067 , H01S3/094 , H01S3/30 , H04B10/17 , H04B10/18 , G02B6/02
CPC分类号： G02B6/02009 , G02B6/02242 , G02B6/03611 , G02B6/03627 , G02B6/03644 , G02B6/03666 , G02B6/29377 , H01S3/06729 , H01S3/06754 , H01S3/094011 , H01S3/302 , H04B10/25253 , H04B10/2916
摘要： An optical fiber transmission link has a first optical fiber with a high effective area coupled to a second, downstream optical fiber with a low effective area. The downstream fiber has non-zero dispersion and low dispersion slope. Characteristics of the upstream fiber permit the launching of high power channels in a wavelength division multiplexing, and characteristics of the downstream fiber enable Raman amplification along that fiber to extend the transmission distance before a need for discrete amplification. The downstream fiber has a non-zero dispersion in the C-band wavelengths and a low dispersion slope and has low attenuation at the signal and pump wavelengths. Refractive-index profiles include variations of W-type fibers that may include outer rings of positive or negative index. Pumping of the downstream fiber may occur either co-directionally to the signals, counter-directionally to the signals, or in both directions.
摘要翻译：光纤传输链路具有第一光纤，其具有高有效面积，耦合到具有低有效面积的第二下游光纤。下游光纤具有非零色散和低色散斜率。上游光纤的特性允许在波分复用中发射高功率信道，并且下行光纤的特性使得沿着该光纤的拉曼放大能够在需要离散放大之前扩展传输距离。下行光纤在C波段波长具有非零色散和低色散斜率，在信号和泵浦波长处具有低衰减。折射率分布包括W型纤维的变化，其可以包括正或负指数的外环。下游光纤的泵浦可以与信号共向地发生，与信号相反地发生，或者在两个方向上发生。

6. 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。

7. 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。

8. 发明授权

US06577800B2 Optical fiber for metropolitan and access network systems 有权
标题翻译：用于大都市和接入网络系统的光纤
公开(公告)号：US06577800B2
公开(公告)日：2003-06-10
申请号：US09881109
申请日：2001-06-15
申请人： Davide Sarchi , Giacomo Stefano Roba
发明人： Davide Sarchi , Giacomo Stefano Roba
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。

9. 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。

10. 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。

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