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1.发明授权METHOD FOR CHECKING THE CORRECT INSTALLATION OF A. BEND-INSENSITIVE OPTICAL CABLE AND OPTICAL CABLE SUITABLE FOR THE METHOD THEREOF 有权PROCESS审查弯曲不敏感光缆的正确的安装及用于该方法的合适的光学CABLE
公开(公告)号：EP2567207B1
公开(公告)日：2017-03-22
申请号：EP10738043.8
申请日：2010-05-07
申请人： Prysmian S.p.A.
CPC分类号： G02B6/4401 , G01M11/088 , G01M11/3109 , G01N21/84 , G02B6/4413 , G02B6/4463
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2.发明公开
公开(公告)号：EP2035343A1
公开(公告)日：2009-03-18
申请号：EP06776115.5
申请日：2006-07-03
申请人： Prysmian S.p.A.
发明人： TOGNINI, Paolo , RUZZIER, Marco , PATA, Roberto
IPC分类号： C03C25/60
CPC分类号： C03C25/64
摘要： The hydroxyl content in an optical fiber is stabilized by a manufacturing process involving exposure of the optical fiber to a mixture deuterium and a predetermined amount of hydrogen.
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公开(公告)号：EP2517059B1
公开(公告)日：2018-11-21
申请号：EP09799642.5
申请日：2009-12-23
申请人： Prysmian S.p.A.
IPC分类号： G02B6/44
CPC分类号： G02B6/441 , G02B6/4403 , G02B6/4433
摘要： A microbundle optical cable such as, a riser cable, includes an outer jacket and a plurality of microbundles housed in the outer jacket. At least one of the microbundles includes an optical fiber ribbon enclosed in a microbundle coating. The at least one microbundle includes a longitudinal axis and a cross-section taken on a plane substantially perpendicular to the longitudinal axis. The cross-section may include a first dimension and a second dimension. The first dimension is higher than the second dimension. Therefore, the cross-section shape is an elongated cross shape.
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公开(公告)号：EP2084112A1
公开(公告)日：2009-08-05
申请号：EP06807351.9
申请日：2006-10-17
申请人： Prysmian S.p.A.
IPC分类号： C03B37/014
CPC分类号： C03B37/01466
摘要： The present invention relates to a process for manufacturing an optical fiber, said process comprising the steps of: a) producing a soot core preform by depositing a core material on a substrate; b) removing the substrate from the soot preformleaving an axial cavity along the longitudinal axis of the soot core preform; c) drying and consolidating the soot core preform so as to obtain a glass core preform having an axial hole corresponding to said axial cavity; d) reducing a diameter of the axial hole; and e) stretching the glass core preform so as to substantially close the axial hole, wherein the process further comprises the step of measuring at least one geometric characteristic of the axial hole of the glass core preform.
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5.发明公开
公开(公告)号：EP3803910A1
公开(公告)日：2021-04-14
申请号：EP18728823.8
申请日：2018-05-24
申请人： Prysmian S.p.A.
发明人： MAIOLI, Paolo , RUZZIER, Marco , LUCARELLI, Monica
IPC分类号： H01B7/26
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6.发明公开METHOD FOR CHECKING THE CORRECT INSTALLATION OF A. BEND-INSENSITIVE OPTICAL CABLE AND OPTICAL CABLE SUITABLE FOR THE METHOD THEREOF 有权PROCESS审查弯曲不敏感光缆的正确的安装及用于该方法的合适的光学CABLE
公开(公告)号：EP2567207A1
公开(公告)日：2013-03-13
申请号：EP10738043.8
申请日：2010-05-07
申请人： Prysmian S.p.A.
CPC分类号： G02B6/4401 , G01M11/088 , G01M11/3109 , G01N21/84 , G02B6/4413 , G02B6/4463
摘要： A method for detecting faulty laying down of an optical cable exhibiting a measured cut-off wavelength is described. The method comprises: providing an optical cable for transmitting optical signals including at least one single-mode optical fibre having an attenuation equal to or larger than a first threshold value as measured when wound for one turn around a bending radius equal to or smaller than 5 mm at at least one predetermined test wavelength, the test wavelength being smaller than the measured cut-off wavelength, and an attenuation smaller than a second threshold value as measured when wound for one turn around a bending radius equal to at least a minimum bending radius at an operative wavelength equal to or larger than the measured cut-off wavelength; laying the optical cable, and measuring the attenuation in the at least one optical fibre at the predetermined test wavelength. An optical cable is also described which exhibits single-mode transmission and is bend- insensitive at wavelengths equal to or higher than a measured cut-off wavelength after propagation over a cable length. Preferably, the measured cut-off wavelength is 1260 nm. The optical cable comprises at least one optical fibre that is bend sensitive at a predetermined test wavelength not larger than the measured cut-off wavelength and is bend insensitive at an operative wavelength larger than the measured cut-off wavelength, where the cable operates in single-mode regime.
摘要翻译： 一种用于检测故障的铺设光缆的向下的表现出测得的截止波长的方法包括用于发射光信号，其包括具有在衰减等于或大于第一阈值的情况下的至少一个单模光纤提供光缆的测得 当卷绕用于围绕弯曲半径等于或在至少一个预定测试波长小于5mm一圈时，作为测得的测试波长比所测量的截止波长更小，并且小于第二阈值，以衰减较小时伤口 为一匝围绕弯曲半径等于至少最小处工作波长等于或大于所测量的截止波长更大的弯曲半径; 铺设光缆; 并测量在所述至少一个光纤的衰减在预定的测试波长。 一种光缆包括至少一个光纤确实是在预定的测试波长不大于测得的截止波长较大的弯曲敏感并且是弯曲不敏感于在工作波长比所测量的截止波长，其中，所述电缆在单一的操作较大 -mode制度。
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公开(公告)号：EP2084112B1
公开(公告)日：2011-09-28
申请号：EP06807351.9
申请日：2006-10-17
申请人： Prysmian S.p.A.
IPC分类号： C03B37/014
CPC分类号： C03B37/01466
摘要： The present invention relates to a process for manufacturing an optical fiber, said process comprising the steps of: a) producing a soot core preform by depositing a core material on a substrate; b) removing the substrate from the soot preformleaving an axial cavity along the longitudinal axis of the soot core preform; c) drying and consolidating the soot core preform so as to obtain a glass core preform having an axial hole corresponding to said axial cavity; d) reducing a diameter of the axial hole; and e) stretching the glass core preform so as to substantially close the axial hole, wherein the process further comprises the step of measuring at least one geometric characteristic of the axial hole of the glass core preform.
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公开(公告)号：EP2517059A1
公开(公告)日：2012-10-31
申请号：EP09799642.5
申请日：2009-12-23
申请人： Prysmian S.p.A.
IPC分类号： G02B6/44
CPC分类号： G02B6/441 , G02B6/4403 , G02B6/4433
摘要： A microbundle optical cable such as, a riser cable, includes an outer jacket and a plurality of microbundles housed in the outer jacket. At least one of the microbundles includes an optical fiber ribbon enclosed in a microbundle coating. The at least one microbundle includes a longitudinal axis and a cross-section taken on a plane substantially perpendicular to the longitudinal axis. The cross-section may include a first dimension and a second dimension. The first dimension is higher than the second dimension. Therefore, the cross-section shape is an elongated cross shape.
摘要翻译： 它公开了一种微型光缆，例如，立管电缆。 光缆包括：外壳和容纳在外壳中的多个微细孔。 至少一个所述微细孔包括封装在微细孔涂层中的光纤带。 所述至少一个微细孔包括纵向轴线和在基本垂直于纵向轴线的平面上截取的横截面。 横截面可以包括第一尺寸和第二尺寸。 第一个维度高于第二个维度。 因此，横截面形状是细长的十字形状。
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9.发明授权
公开(公告)号：EP2035343B1
公开(公告)日：2012-05-16
申请号：EP06776115.5
申请日：2006-07-03
申请人： Prysmian S.p.A.
发明人： TOGNINI, Paolo , RUZZIER, Marco , PATA, Roberto
CPC分类号： C03C25/64
摘要： The hydroxyl content in an optical fiber is stabilized by a manufacturing process involving exposure of the optical fiber to a mixture deuterium and a predetermined amount of hydrogen.
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公开(公告)号：EP2350720A1
公开(公告)日：2011-08-03
申请号：EP08875298.5
申请日：2008-11-07
申请人： Prysmian S.p.A.
CPC分类号： G02B6/449 , G02B6/4413 , G02B6/4434
摘要： A bend-insensitive optical cable for transmitting optical signals is disclosed, the optical cable having a length, L
TOT , extending from an input end adapted to receive the optical signals to an output end and comprising at least one single-mode optical fiber having a cable cut-off wavelength, (λ
cc )
A, of from 1290 nm to 1650 nm and preferably of from 1320 to 1650 nm. The at least one optical fiber is helically twisted around a longitudinal axis (Z) with a twisting pitch, P, for a twisted length, L, extending along at least a portion of the length, L
TOT , of the optical cable, wherein the twisted length and the twisting pitch are selected such that the optical cable exhibits a measured cut-off wavelength equal or lower than 1260 nm. Preferably, the at least one fiber has a mode-field diameter (MFD) of from 8.6 μm to 9.5 μm. According to a preferred embodiment, the optical cable (10) comprises two optical fibers (11,12) twisted together along the longitudinal axis (Z), each of the two optical fibers having a (λ
cc )
A of from 1290 nm to 1650 nm.
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