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61. 发明授权

US08443631B2 Method of making a low PMD optical fiber 有权
标题翻译：制造低PMD光纤的方法
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。

62. 发明授权

US08322164B2 Process for producing a low polarization mode dispersion optical fiber 失效
标题翻译：低偏振模色散光纤的制造方法
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。

63. 发明授权

US07946133B2 Methods for modifying ovality of optical fiber preforms 有权
标题翻译：修改光纤预制棒椭圆度的方法
公开(公告)号：US07946133B2
公开(公告)日：2011-05-24
申请号：US12945133
申请日：2010-11-12
申请人： James William Fleming , Siu-Ping Hong , Paul Francis Glodis , Thomas John Miller , Zhi Zhou , David Kalish , Shunhe Xiong
发明人： James William Fleming , Siu-Ping Hong , Paul Francis Glodis , Thomas John Miller , Zhi Zhou , David Kalish , Shunhe Xiong
IPC分类号： C03B37/012
CPC分类号： C03B37/01225 , C03B37/01228 , C03B37/01861 , C03B37/027 , C03B37/02745 , C03B2203/36 , C03B2205/40 , C03B2205/72
摘要： Methods for modifying preform core ovality during and subsequent to the formation of an optical fiber preform. After MCVD deposition forms the core rod, but prior to overcladding of the core rod, the code rod may be etched to change its ovality. In order to etch the core rod, the core rod may be mounted to lathe, rotated by at least two rotors, and subjected to a heat source. Additionally, one of the at least two rotors may be phase-shifted from another one of the at least two rotors after the core rod is mounted on the lathe.
摘要翻译：在形成光纤预制件期间和之后修改预成型坯椭圆度的方法。在MCVD沉积后形成芯棒，但是在芯棒的外包层之前，可以蚀刻编码棒以改变其椭圆度。为了蚀刻芯棒，芯棒可以安装到车床上，旋转至少两个转子，并经受热源。此外，在将芯棒安装在车床上之后，至少两个转子中的一个可以从至少两个转子中的另一个转向相移。

64. 发明授权

US07894697B2 Optical fiber, optical transmission line, optical module, and optical transmission system 有权
标题翻译：光纤，光传输线，光模块和光传输系统
公开(公告)号：US07894697B2
公开(公告)日：2011-02-22
申请号：US11976110
申请日：2007-10-22
申请人： Takashi Sasaki , Kazumasa Makihara , Tetsuya Haruna , Masashi Onishi , Masaaki Hirano
发明人： Takashi Sasaki , Kazumasa Makihara , Tetsuya Haruna , Masashi Onishi , Masaaki Hirano
IPC分类号： G02B6/02 , G02B6/036 , G02B6/028 , G02B6/00 , H04J14/02
CPC分类号： G02B6/03644 , C03B2203/22 , C03B2203/29 , C03B2203/36 , G02B6/02261 , G02B6/03627 , G02B6/29377
摘要： The present invention relates to an optical fiber which has a structure for further increasing an FOM (=|dispersion|/loss) and which can be applied to a dispersion compensation module. The optical fiber is mainly composed of silica glass and has a core region including a center of an optical axis, a depressed region surrounding the core region, a ring region surrounding the depressed region, and a cladding region surrounding the ring region and doped with F. As compared with the refractive index of pure silica glass, a relative refractive index difference of the core region is greater than 2% but less than 3%, a relative refractive index difference of the depressed region is −1% or more but −0.5% or less, a relative refractive index difference of the ring region is 0.01% or more but 0.24% or less, and a relative refractive index difference of the cladding region is −0.3% or more but −0.1% or less. The FOM at the wavelength of 1550 nm is 250 ps/nm/dB or more.
摘要翻译：本发明涉及具有进一步增加FOM（= |色散| /损耗）的结构的光纤，并且可以应用于色散补偿模块。该光纤主要由石英玻璃构成，具有包括光轴中心，围绕芯区域的凹陷区域，围绕该凹陷区域的环形区域和围绕该环形区域并且掺杂有F的包层区域的芯区域与纯石英玻璃的折射率相比，芯区域的相对折射率差大于2％但小于3％，凹陷区域的相对折射率差为-1％以上-0.5 ％以下，环区域的相对折射率差为0.01％以上且0.24％以下，包层区域的相对折射率差为-0.3％以上-0.1％以下。 1550nm波长的FOM为250ps / nm / dB以上。

65. 发明申请

US20110002580A1 OPTICAL FIBER 有权
标题翻译：光纤
公开(公告)号：US20110002580A1
公开(公告)日：2011-01-06
申请号：US12920012
申请日：2009-02-25
申请人： Takemi Hasegawa , Tetsuya Hayashi
发明人： Takemi Hasegawa , Tetsuya Hayashi
IPC分类号： G02B6/00
CPC分类号： G02B6/02285 , C03B37/12 , C03B2203/06 , C03B2203/18 , C03B2203/19 , C03B2203/36 , C03B2205/06 , G02B6/105
摘要： The present invention relates to an optical fiber, wherein PMD will not significantly increase even when an external factor, such as a lateral pressure, a bending and the like, is applied to the optical fiber. The optical fiber is imparted with a twist that is an elastic torsion with stress. In the condition that a twist rate, being the number of rotations per unit length by the twist, is represented by f(z) as a function of a position z in a longitudinal direction of the optical fiber, which has a predetermined twist cycle and is defined such that, in one twist cycle, a twist rotation angle in one direction and a twist rotation angle in the opposite direction are equal to each other, when a proportionality coefficient representing circular birefringence per twist rate is denoted by g, an angular frequency is denoted by ω, and external linear birefringence due to a bending and a lateral pressure is denoted by βe, then an average twist cycle L and an average twist rate γav in the optical fiber satisfy predetermined relational expressions.
摘要翻译：光纤技术领域本发明涉及一种光纤，其中即使外部因素（例如横向压力，弯曲等）被施加到光纤上，PMD也不会显着增加。光纤被赋予具有应力的弹性扭转的扭曲。在作为扭转的每单位长度的转数的扭曲率由f（z）表示为具有预定扭转周期的光纤的纵向方向上的位置z的函数，并且被定义为使得在一个扭转周期中，在一个方向上的扭转旋转角度和相反方向上的扭转旋转角度彼此相等时，当表示每个扭转速率的圆形双折射率的比例系数由g表示时，角频率由ω表示，并且由弯曲和横向压力引起的外部线性双折射由＆bgr; e表示，则光纤中的平均扭转周期L和平均扭转速度γav满足预定的关系式。

66. 发明授权

US07849713B2 Optical fibre having low splice loss and method for making it 有权
标题翻译：具有低接头损耗的光纤及其制造方法
公开(公告)号：US07849713B2
公开(公告)日：2010-12-14
申请号：US10538899
申请日：2002-12-24
申请人： Antonio Collaro , Giuseppe Ferri , Alfonso Pannullo
发明人： Antonio Collaro , Giuseppe Ferri , Alfonso Pannullo
IPC分类号： C03B37/023 , C03B37/07
CPC分类号： G02B6/02271 , C03B37/0253 , C03B37/027 , C03B2203/22 , C03B2203/23 , C03B2203/29 , C03B2203/36 , C03B2205/40 , G02B6/02014 , G02B6/0228 , G02B6/03611 , G02B6/03644 , G02B6/03661 , G02B6/2551
摘要： A process for making a non-zero dispersion shifted optical fiber having low splice loss and low attenuation and to an optical fiber produced by this process. A reduction of the splice loss is observed with decreasing drawing tension. The optical fiber has a core region that includes three segments and an inner cladding segment, each having a maximum refractive index percent difference, Δdeltai %, i=0-3, the subscript i referring to a particular refractive index, the core segments being selected such that Δdelta0%>Δdelta2%>Δdelta1%≧0 and Δdelta2%>Δdelta3%≧0. Optical fibers exhibiting low splice loss were drawn at tensions not larger than 150 g, preferably not larger than 100 g.
摘要翻译：用于制造具有低接合损耗和低衰减的非零色散位移光纤以及由该工艺产生的光纤的工艺。随着拉伸张力的降低观察到剪切损失的减少。光纤具有芯区域，其包括三个区段和内包层区段，每个区段具有最大折射率百分比差异，Dgr; deltai％，i = 0-3，下标i表示特定折射率，核心段被选择为使得＆Dgr; delta0％>＆Dgr; delta2％>＆Dgr; delta1％≥0和＆Dgr; delta2％>＆Dgr; delta3％≥0。在不大于150g，优选不大于100g的拉伸下拉伸显示出低接头损耗的光纤。

67. 发明申请

US20090271384A1 Relational database management system having integrated non-relational multi-dimensional data store of aggregated data elements 有权
公开(公告)号：US20090271384A1
公开(公告)日：2009-10-29
申请号：US12384093
申请日：2009-03-31
申请人： Reuven Bakalash , Guy Shaked , Joseph Caspi
发明人： Reuven Bakalash , Guy Shaked , Joseph Caspi
IPC分类号： G06F17/30 , G06F7/00
CPC分类号： G06F17/30592 , C03B37/02718 , C03B2203/36 , C03B2205/42 , C03B2205/55 , Y10S707/99933 , Y10S707/99935 , Y10S707/99943
摘要： Improved method of and apparatus for joining and aggregating data elements integrated within a relational database management system (RDBMS) using a non-relational multi-dimensional data structure (MDD). The improved RDBMS system of the present invention can be used to realize achieving a significant increase in system performance (e.g. deceased access/search time), user flexibility and ease of use. The improved RDBMS system of the present invention can be used to realize an improved Data Warehouse for supporting on-line analytical processing (OLAP) operations or to realize an improved informational database system or the like.

68. 发明授权

US07340148B2 Methods and systems for controlling fiber polarization mode dispersion (PMD) 有权
标题翻译：用于控制光纤偏振模色散（PMD）的方法和系统
公开(公告)号：US07340148B2
公开(公告)日：2008-03-04
申请号：US11741827
申请日：2007-04-30
申请人： John A. Fee
发明人： John A. Fee
IPC分类号： G02B6/02
CPC分类号： G06F17/18 , C03B2203/36 , G01M11/336 , G02B6/02285 , G06F15/00
摘要： A method is provided for predicting an installed performance parameter of an optical fiber cable. The method includes obtaining a measurement indicative of a value of the performance parameter at a first moment in time. A measurement indicative of a value of the performance parameter at a second moment in time may then be obtained. A first correlation may then be determined between the measurement at the first moment in time and the measurement at the second moment in time. A value of the performance parameter at the second moment in time may then be estimated based upon the measurement at the first moment in time in combination with the first correlation, the first correlation being based upon observations of a manner in which the performance parameter varies over time for at least a second optical fiber.
摘要翻译：提供了一种用于预测光缆的安装性能参数的方法。该方法包括在第一时刻获得表示性能参数的值的测量值。然后可以获得指示在第二时刻的性能参数的值的测量。然后可以在第一时刻的测量和在第二时刻的测量之间确定第一相关性。然后可以基于第一时刻的测量结合第一相关性来估计在时间上的第二时刻的性能参数的值，第一相关是基于对性能参数变化的方式的观察至少第二光纤的时间。

69. 发明授权

US07286740B2 Optical fiber, optical transmission line, optical module and optical transmission system 有权
标题翻译：光纤，光传输线，光模块和光传输系统
公开(公告)号：US07286740B2
公开(公告)日：2007-10-23
申请号：US11544007
申请日：2006-10-06
申请人： Takashi Sasaki , Kazumasa Makihara , Tetsuya Haruna , Masashi Onishi , Masaaki Hirano
发明人： Takashi Sasaki , Kazumasa Makihara , Tetsuya Haruna , Masashi Onishi , Masaaki Hirano
IPC分类号： G02B6/02 , G02B6/036 , G02B6/028 , G02B6/00
CPC分类号： G02B6/03644 , C03B2203/22 , C03B2203/29 , C03B2203/36 , G02B6/02261 , G02B6/03627 , G02B6/29377
摘要： The present invention relates to an optical fiber which has a structure for further increasing an FOM (=|dispersion|/loss) and which can be applied to a dispersion compensation module. The optical fiber is mainly composed of silica glass and has a core region including a center of an optical axis, a depressed region surrounding the core region, a ring region surrounding the depressed region, and a cladding region surrounding the ring region and doped with F. As compared with the refractive index of pure silica glass, a relative refractive index difference of the core region is 3% or more but 4% or less, a relative refractive index difference of the depressed region is −1% or more but −0.5% or less, a relative refractive index difference of the ring region is 0.01% or more but 0.24% or less, and a relative refractive index difference of the cladding region is −0.3% or more but −0.1% or less. The FOM at the wavelength of 1550 nm is 250 ps/nm/dB or more.
摘要翻译：本发明涉及具有进一步增加FOM（= |色散| /损耗）的结构的光纤，并且可以应用于色散补偿模块。该光纤主要由石英玻璃构成，具有包括光轴中心，围绕芯区域的凹陷区域，围绕该凹陷区域的环形区域和围绕该环形区域并且掺杂有F的包层区域的芯区域与纯石英玻璃的折射率相比，芯区域的相对折射率差为3％以上且4％以下，凹陷区域的相对折射率差为-1％以上-0.5 ％以下，环区域的相对折射率差为0.01％以上且0.24％以下，包层区域的相对折射率差为-0.3％以上-0.1％以下。 1550nm波长的FOM为250ps / nm / dB以上。

70. 发明授权

US07283691B2 Methods and systems for controlling fiber polarization mode dispersion (PMD) 有权
标题翻译：用于控制光纤偏振模色散（PMD）的方法和系统
公开(公告)号：US07283691B2
公开(公告)日：2007-10-16
申请号：US10922131
申请日：2004-08-20
申请人： John A. Fee
发明人： John A. Fee
IPC分类号： G02B6/02
CPC分类号： G06F17/18 , C03B2203/36 , G01M11/336 , G02B6/02285 , G06F15/00
摘要： A method is provided for predicting an installed performance parameter of an optical fiber cable. The method includes obtaining a measurement indicative of a value of the performance parameter at a first moment in time. A measurement indicative of a value of the performance parameter at a second moment in time may then be obtained. A first correlation may then be determined between the measurement at the first moment in time and the measurement at the second moment in time. A value of the performance parameter at the second moment in time may then be estimated based upon the measurement at the first moment in time in combination with the first correlation, the first correlation being based upon observations of a manner in which the performance parameter varies over time for at least a second optical fiber.
摘要翻译：提供了一种用于预测光缆的安装性能参数的方法。该方法包括在第一时刻获得表示性能参数的值的测量值。然后可以获得指示在第二时刻的性能参数的值的测量。然后可以在第一时刻的测量和在第二时刻的测量之间确定第一相关性。然后可以基于第一时刻的测量结合第一相关性来估计在时间上的第二时刻的性能参数的值，第一相关是基于对性能参数变化的方式的观察至少第二光纤的时间。

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