公开(公告)号：US20080022725A1

公开(公告)日：2008-01-31

申请号：US10568686

申请日：2003-08-29

申请人： Davide Sarchi ,  Sabrina Fogliani ,  Roberto Pata

发明人： Davide Sarchi ,  Sabrina Fogliani ,  Roberto Pata

IPC分类号： C03B37/025 ,  C03B37/027 ,  G02B6/10

CPC分类号： G02B6/02285 ,  C03B37/02745 ,  C03B37/032 ,  C03B2203/19 ,  C03B2203/36 ,  C03B2205/06

摘要： In a process for producing a low polarization mode dispersion optical fiber, which comprises the steps of drawing a glass preform into an optical fiber and of spinning, during drawing, the optical fiber about an optical fiber axis, the spinning is imparted according to a bidirectional and substantially trapezoidal spin function, which includes zones (P) of substantially constant amplitude (plateau) and zones of transition (T) where inversion of the spin direction takes place, wherein the extension (p) of the zones of substantially constant amplitude is greater than the extension (t) of the zones of transition, and the number of inversions of the direction of spin in a length of fiber of 20 m is at most two.

摘要翻译： 在制造低分散模式色散​​光纤的方法中，包括以下步骤：在拉丝期间将玻璃预成型件拉制成光纤并在拉丝期间围绕光纤轴线旋转光纤，根据双向 并且具有基本上梯形的自旋函数，其包括基本上恒定振幅（平台）的区域（P）和转移区域（T），其中发生自旋方向的反转，其中基本恒定幅度的区域的延伸部分（p）较大 比转移区域的延伸部分（t）长，并且光纤长度为20μm的旋转方向的反转次数为2个以下。

公开(公告)号：US08322164B2

公开(公告)日：2012-12-04

申请号：US10568686

申请日：2003-08-29

申请人： Davide Sarchi ,  Sabrina Fogliani ,  Roberto Pata

发明人： Davide Sarchi ,  Sabrina Fogliani ,  Roberto Pata

IPC分类号： C03B37/025

CPC分类号： G02B6/02285 ,  C03B37/02745 ,  C03B37/032 ,  C03B2203/19 ,  C03B2203/36 ,  C03B2205/06

摘要： In a process for producing a low polarization mode dispersion optical fiber, which comprises the steps of drawing a glass preform into an optical fiber and of spinning, during drawing, the optical fiber about an optical fiber axis, the spinning is imparted according to a bidirectional and substantially trapezoidal spin function, which includes zones (P) of substantially constant amplitude (plateau) and zones of transition (T) where inversion of the spin direction takes place, wherein the extension (p) of the zones of substantially constant amplitude is greater than the extension (t) of the zones of transition, and the number of inversions of the direction of spin in a length of fiber of 20 m is at most two.

摘要翻译： 在制造低分散模式色散​​光纤的方法中，包括以下步骤：在拉丝期间将玻璃预成型件拉制成光纤并在拉丝期间围绕光纤轴线旋转光纤，根据双向 并且具有基本上梯形的自旋函数，其包括基本上恒定振幅（平台）的区域（P）和转移区域（T），其中发生自旋方向的反转，其中基本恒定幅度的区域的延伸部分（p）较大 比转移区域的延伸部分（t）长，并且光纤长度为20μm的旋转方向的反转次数为2个以下。

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。

公开(公告)号：US09372069B2

公开(公告)日：2016-06-21

申请号：US13989956

申请日：2010-11-29

申请人： Bernd Knuepfer ,  Davide Sarchi

发明人： Bernd Knuepfer ,  Davide Sarchi

IPC分类号： G01B11/06 ,  G02B6/44 ,  G01L1/24 ,  G01N3/22 ,  G01V3/00 ,  H04B10/00 ,  G01R31/28 ,  G01B11/02 ,  G01D5/353

CPC分类号： G01B11/02 ,  G01B11/028 ,  G01D5/35358 ,  G02B6/4401

摘要： A method of measuring the length of an electric cable, includes providing an electric cable having a cable length and including a cable neutral axis, and a fiber unit longitudinally extending along the cable and including an optical fiber arranged substantially along the neutral axis, wherein the optical fiber is mechanically coupled with the cable; injecting an optical signal into the optical fiber; detecting back-scattered light from the optical fiber responsive to the injected optical signal; analyzing the detected back-scattered light as a function of time so as to determine the length of the optical fiber, and deriving the cable length from the length of the optical fiber.

摘要翻译： 一种测量电缆长度的方法包括提供具有电缆长度并包括电缆中性轴线的电缆，以及沿电缆纵向延伸并包括基本上沿着中性轴布置的光纤的光纤单元，其中， 光纤与电缆机械耦合; 将光信号注入光纤; 响应于注入的光信号，从光纤检测反向散射光; 分析检测到的反向散射光作为时间的函数，以便确定光纤的长度，并从光纤的长度导出电缆长度。

公开(公告)号：US08665676B2

公开(公告)日：2014-03-04

申请号：US13285542

申请日：2011-10-31

申请人： Davide Sarchi ,  Jerome Favre ,  Nakis Karapatis

发明人： Davide Sarchi ,  Jerome Favre ,  Nakis Karapatis

IPC分类号： G04B21/00

CPC分类号： G04B37/0075 ,  G10K13/00

摘要： The acoustic radiating membrane (1) is for assembly in a music box or a striking watch. The membrane is made with at least one area of asymmetrical shape, formed in the material of the membrane or with at least one area of asymmetrical shape having a different thickness from the general thickness of the membrane. It preferably includes two asymmetrical areas of elliptical shape (2, 3) which are partly superposed and have a different thickness from each other. The two ellipses (2, 3), preferably hollowed out of the membrane, are off-centre in relation to each other.

摘要翻译： 声辐射膜（1）用于组装在音乐盒或醒目的手表中。 该薄膜制成具有不对称形状的至少一个区域，形成在膜的材料中或具有与膜的一般厚度不同厚度的不对称形状的至少一个区域。 它优选地包括椭圆形（2,3）的两个不对称区域，它们被部分重叠并且具有彼此不同的厚度。 优选从隔膜中挖出的两个椭圆形（2,3）彼此偏心。

公开(公告)号：US20070189656A1

公开(公告)日：2007-08-16

申请号：US10572203

申请日：2004-09-14

申请人： Davide Sarchi ,  Martino Travagnin ,  Alexis Debut

发明人： Davide Sarchi ,  Martino Travagnin ,  Alexis Debut

IPC分类号： G02B6/00

CPC分类号： G01M11/336 ,  G01M11/088 ,  G01M11/331 ,  G01M11/335 ,  H04B10/2569

摘要： A method of evaluating the Polarization Mode Dispersion (PMD) of an optical fiber by arranging the optical fiber at substantially zero tension on a surface, propagating prescribed evaluation optical signals along the optical fiber, measuring fiber Differential Group Delay (DGD) values in response to the evaluation optical signals, repeating at least once the acts of propagating and measuring, each time preliminarily inducing a change in a mode coupling of the fiber, and determining the fiber PMD on the basis of a calculated DGD average value. Changes in the polarization mode coupling of the fiber are induced by, moving at least a section of the fiber substantially orthogonally to the surface. An improved PMD evaluation apparatus includes a fiber arrangement surface adapted to have a fiber under test arranged thereon at substantially zero tension, and, operatively associated with the fiber arrangement surface, a fiber moving device activatable for moving the at least a section of the fiber substantially orthogonally to the fiber arrangement surface.

摘要翻译： 一种通过将光纤布置在表面上基本为零张力的光纤来评估光纤的偏振模色散（PMD）的方法，沿着光纤传播规定的评估光信号，响应于光纤的差分组延迟（DGD）值 评估光信号，每次重复至少一次传播和测量的动作，每次预先引起光纤的模式耦合的改变，并且基于所计算的DGD平均值来确定光纤PMD。 纤维的偏振模式耦合的变化是通过将纤维的至少一部分基本上垂直于表面移动而引起的。 一种改进的PMD评估装置包括纤维布置表面，该纤维布置表面适于具有基本上零张力的被测试纤维，并且与纤维布置表面可操作地相关联;纤维移动装置，其可激活以基本上移动纤维的至少一部分 与纤维布置表面正交。

公开(公告)号：US20060288738A1

公开(公告)日：2006-12-28

申请号：US10522557

申请日：2002-07-31

申请人： Marco Ruzzier ,  Andrea Demergazzi ,  Davide Sarchi

发明人： Marco Ruzzier ,  Andrea Demergazzi ,  Davide Sarchi

IPC分类号： C03B37/07 ,  C03B37/018 ,  G01N21/00 ,  C03B5/24

CPC分类号： G01G3/16 ,  C03B37/01486

摘要： An apparatus for measuring the weight of a preform for optical fibres during a chemical deposition process for the formation of a preform is disclosed. The apparatus has at least one elastic constraint associated with at least one end portion of an elongated element made of a chemical deposition substrate for the formation of the preform, a device for inducing an oscillation, for example axial, on said elongated element, a device for detecting the frequency of oscillation of said elongated element, and a device for calculating the weight of the preform according to the detected frequency of oscillation. Advantageously, the device allows the realisation of a method for measuring the weight of the preform wherein the errors in measurement caused by thermal drift effects, by the axial distribution of the masses on the preform and by loads which are different from the mass of the preform in formation are reduced to below the required precision in measurement.

摘要翻译： 公开了一种用于在用于形成预制件的化学沉积过程中测量光纤预制棒的重量的装置。 该装置具有与用于形成预成型件的化学沉积基板制成的细长元件的至少一个端部相关联的至少一个弹性约束件，用于在所述细长元件上引起例如轴向振动的装置， 用于检测所述细长元件的振荡频率，以及用于根据检测到的振荡频率计算预成型件的重量的装置。 有利地，该装置允许实现一种用于测量预成型件的重量的方法，其中由热漂移效应引起的测量误差，通过预成型件上的质量的轴向分布以及不同于预成型件的质量的负载 在测量中减少到低于要求的精度。

公开(公告)号：US09400221B2

公开(公告)日：2016-07-26

申请号：US14382919

申请日：2012-03-05

申请人： Davide Sarchi ,  Luca Palmieri

发明人： Davide Sarchi ,  Luca Palmieri

IPC分类号： G01N3/32 ,  G01L1/24 ,  G01M5/00 ,  G01M11/08 ,  G01L3/12 ,  G01L5/10

CPC分类号： G01L1/242 ,  G01L3/12 ,  G01L5/105 ,  G01M5/0025 ,  G01M5/0041 ,  G01M5/0091 ,  G01M11/086 ,  Y10T29/49004

摘要： A method for monitoring a torsional state of a cable having a central longitudinal axis, includes providing a cable including a torsion sensor longitudinally extending along the cable, the torsion sensor including a single-mode optical fiber arranged substantially along the central longitudinal axis of the cable, and at least three longitudinal structural elements, at least one of the longitudinal structural elements being an electrically conductive core, wherein the torsion sensor is mechanically coupled with at least one of the longitudinal structural elements; measuring a torsional state of the single-mode optical fiber by polarization-sensitive optical reflectometry; and associating the torsional state of the cable along the longitudinal axis with the measured torsional state of the single-mode optical fiber.

摘要翻译： 一种用于监测具有中心纵向轴线的电缆的扭转状态的方法，包括提供包括沿电缆纵向延伸的扭转传感器的电缆，所述扭转传感器包括基本上沿电缆的中心纵向轴线布置的单模光纤 和至少三个纵向结构元件，所述纵向结构元件中的至少一个是导电芯，其中所述扭转传感器与所述纵向结构元件中的至少一个机械联接; 通过偏振光学光学反射测量来测量单模光纤的扭转状态; 并且将沿着纵向轴线的电缆的扭转状态与测量的单模光纤的扭转状态相关联。

公开(公告)号：US09032809B2

公开(公告)日：2015-05-19

申请号：US13496861

申请日：2009-09-18

申请人： Carsten Kemnitz ,  Davide Sarchi ,  Bernd Knuepfer ,  Giacomo Coletta ,  Arnd-Guenther Carl ,  Thomas Kittel ,  Reiner Ewald

发明人： Carsten Kemnitz ,  Davide Sarchi ,  Bernd Knuepfer ,  Giacomo Coletta ,  Arnd-Guenther Carl ,  Thomas Kittel ,  Reiner Ewald

IPC分类号： G01L1/24 ,  H01B7/32

CPC分类号： H01B7/32 ,  D07B1/145 ,  D07B1/147 ,  D07B2201/2096 ,  D07B2301/5577 ,  G01L1/242

摘要： A method for monitoring at least the bending strain of at least one electric cable provided with at least one peripheral mechanically non-symmetric strength member is provided.

摘要翻译： 提供一种用于至少监测至少一根电缆的弯曲应变的方法，所述至少一根电缆设置有至少一个外围机械非对称的强度部件。

公开(公告)号：US08443631B2

公开(公告)日：2013-05-21

申请号：US12308269

申请日：2006-06-22

申请人： Davide Sarchi ,  Maddalena Ferrario

发明人： Davide Sarchi ,  Maddalena Ferrario

IPC分类号： C03B37/025

CPC分类号： C03B37/02745 ,  C03B2203/06 ,  C03B2203/19 ,  C03B2203/36 ,  C03B2205/06 ,  G02B6/02285

摘要： A method of making an optical fiber includes the steps of: providing an optical fiber preform; heating an end portion of the optical fiber preform so as to obtain a softened preform end portion; drawing the softened preform end portion to form the optical fiber; applying to the optical fiber a substantially sinusoidal spin having a spin amplitude and a spin period, the substantially sinusoidal spin being transmitted to the softened preform end portion, and determining an actual spin amplitude applied to the fiber, wherein the actual spin amplitude is the spin amplitude applied in correspondence to the softened preform end portion. The spin amplitude and spin period of the substantially sinusoidal spin are selected in such a way that a ratio of the actual spin amplitude to the spin period is in the range of approximately 0.8 to approximately 1.4 turns/m2.

摘要翻译： 制造光纤的方法包括以下步骤：提供光纤预制棒; 加热光纤预制棒的端部以获得软化的预成型件端部; 绘制软化的预成型件端部以形成光纤; 向光纤施加具有自旋振幅和自旋周期的基本上正弦的自旋，基本上正弦的旋转被传递到软化的预制件端部，并且确定施加到光纤的实际自旋振幅，其中实际的自旋振幅是旋转 对应于软化的预制件端部施加的振幅。 选择基本正弦自旋的自旋振幅和自旋周期，使得实际自旋振幅与自旋周期的比值在大约0.8至大约1.4转/平方米的范围内。