公开(公告)号：US20180057396A1

公开(公告)日：2018-03-01

申请号：US15691139

申请日：2017-08-30

申请人： Corning Incorporated

发明人： Ming-Jun Li ,  Shenping Li ,  Jeffery Scott Stone

IPC分类号： C03C13/04 ,  G02B6/036 ,  G02B6/02 ,  C03B37/012 ,  G01D5/353

CPC分类号： C03C13/046 ,  C03B37/01237 ,  C03B37/018 ,  C03B37/025 ,  C03B37/02763 ,  C03B2203/18 ,  C03B2203/22 ,  C03B2203/24 ,  C03C3/06 ,  C03C2201/31 ,  C03C2213/00 ,  G01D5/35364 ,  G01D5/3538 ,  G02B6/02014 ,  G02B6/03633 ,  H04B10/071 ,  H04B10/25

摘要： The single-mode optical fibers have a core region that includes an inner core region having a delta value Δ1 and a radius r1 immediately surrounded by an outer core region of radius r2 and a delta value Δ2

公开(公告)号：US09878943B2

公开(公告)日：2018-01-30

申请号：US15471344

申请日：2017-03-28

申请人： Corning Incorporated

发明人： Dana Craig Bookbinder ,  Robert Brett Desorcie ,  Hazel Benton Matthews, III ,  Pushkar Tandon

IPC分类号： G02B6/036 ,  C03C25/66 ,  C03C25/10

CPC分类号： C03C25/66 ,  C03B37/01205 ,  C03B37/01446 ,  C03B37/0146 ,  C03B37/027 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/22 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/42 ,  C03B2203/23 ,  C03B2203/24 ,  C03C3/06 ,  C03C13/045 ,  C03C25/1061 ,  C03C25/1068 ,  C03C2201/11 ,  C03C2201/22 ,  C03C2201/31 ,  C03C2203/54 ,  G02B6/02 ,  G02B6/021 ,  G02B6/03627 ,  G02B6/0365 ,  Y02P40/57

摘要： The present disclosure is directed to a method of making an optical fiber with improved bend performance, the optical fiber having a core and at least one cladding layer, and a chlorine content in the in the last layer of the at least one cladding layer that is greater than 500 ppm by weight. The fiber is prepared using a mixture of a carrier gas, a gaseous chlorine source material and a gaseous reducing agent during the sintering of the last or outermost layer of the at least one cladding layer. The inclusion of the reducing gas into a mixture of the carrier gas and gaseous chlorine material reduces oxygen-rich defects that results in at least a 20% reduction in TTP during hydrogen aging testing.

公开(公告)号：US09726815B2

公开(公告)日：2017-08-08

申请号：US15105634

申请日：2014-12-26

申请人： TAIHAN FIBEROPTICS CO., LTD.

发明人： Chi-Hwan Ouh ,  Sung-Koog Oh ,  Na-Eun Kwack ,  Eun-You Hong ,  Jong-Gil Park ,  Ji-Hun Yun

IPC分类号： G02B6/02 ,  C03B37/02 ,  C03B37/023 ,  C03B37/07 ,  C03B37/025 ,  G02B6/036

CPC分类号： G02B6/02 ,  C03B37/0213 ,  C03B37/0253 ,  C03B37/02718 ,  C03B2201/31 ,  C03B2203/24 ,  G02B6/03627

摘要： This ultra-low-loss optical fiber comprises a core having a higher relative refractive index difference than silica and a cladding having a lower relative refractive index difference than silica. The relative refractive index difference of the core with respect to the refractive index of silica is 0.0030 to 0.0055, for example, and the relative refractive index difference of the cladding with respect to the refractive index of silica is −0.0020 to −0.0003. The ultra-low-loss optical fiber has the loss characteristic of simultaneously having optical losses of at most 0.324 dB/km at a wavelength of 1310 nm, at most 0.320 dB/km at a wavelength of 1383 nm, at most 0.184 dB/km at a wavelength of 1550 nm, and at most 0.20 dB/km at a wavelength of 1625 nm. The ultra-low-loss optical fiber is supercooled when the surface temperature of the optical fiber has a temperature range in a glass transition section during drawing.

公开(公告)号：US20170176673A1

公开(公告)日：2017-06-22

申请号：US15378356

申请日：2016-12-14

申请人： Corning Incorporated

发明人： George Edward Berkey ,  Steven Bruce Dawes

IPC分类号： G02B6/036 ,  C03B37/014 ,  C03B37/025 ,  G02B6/02

CPC分类号： G02B6/03627 ,  C03B19/1453 ,  C03B32/00 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/025 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/23 ,  C03B2203/24 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2201/20 ,  C03C2201/31 ,  C03C2203/54 ,  G02B6/02009 ,  G02B6/036 ,  G02B6/03622

摘要： Bromine doping of silica glass is demonstrated. Bromine doping can be achieved with SiBr4 as a precursor. Bromine doping can occur during heating, consolidation or sintering of a porous silica glass body. Doping concentrations of bromine increase with increasing pressure of the doping precursor and can be modeled with a power law equation in which doping concentration is proportional to the square root of the pressure of the doping precursor. Bromine is an updopant in silica and the relative refractive index of silica increases approximately linearly with doping concentration. Bromine can be used as a dopant for optical fibers and can be incorporated in the core and/or cladding regions. Core doping concentrations of bromine are sufficient to permit use of undoped silica as an inner cladding material in fibers having a trench in the refractive index profile. Co-doping of silica glass with bromine and chlorine is also demonstrated.

公开(公告)号：US20170131468A1

公开(公告)日：2017-05-11

申请号：US15414857

申请日：2017-01-25

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Yuki KAWAGUCHI ,  Yoshinori YAMAMOTO ,  Masaaki HIRANO

IPC分类号： G02B6/036 ,  G02B6/02

CPC分类号： G02B6/03627 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/24 ,  G02B6/02019 ,  G02B6/03611 ,  G02B6/0365

摘要： The present embodiment relates to an optical fiber having a W-type refractive index d profile or a trench-type refractive index profile and having reduced microbending loss in a wavelength band to be actually used. The optical fiber includes a center core, an inner cladding surrounding the center core, and an outer cladding surrounding the inner cladding. The inner cladding has a refractive index lower than a refractive index of at least the center core and the outer cladding has a refractive index lower than the refractive index of the center core and higher than the refractive index of the inner cladding. Wavelength dependency of microbending loss has a local maximal value and a shortest wavelength λth where the microbending loss becomes 10% of the local maximal value is longer than 1560 nm.

公开(公告)号：US09618692B2

公开(公告)日：2017-04-11

申请号：US14755469

申请日：2015-06-30

申请人： Corning Incorporated

发明人： George Edward Berkey ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

IPC分类号： G02B6/02 ,  G02B6/036 ,  C03B37/012 ,  C03B37/018 ,  C03B37/014 ,  C03C13/04 ,  C03C25/10

CPC分类号： G02B6/02014 ,  C03B37/01205 ,  C03B37/01211 ,  C03B37/01262 ,  C03B37/01282 ,  C03B37/01413 ,  C03B37/01433 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/018 ,  C03B37/01815 ,  C03B37/0183 ,  C03B37/01838 ,  C03B37/01853 ,  C03B37/01869 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/24 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/24 ,  C03B2205/42 ,  C03B2207/30 ,  C03C13/045 ,  C03C13/046 ,  C03C25/1061 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2203/54 ,  C03C2213/00 ,  G02B6/02019 ,  G02B6/03627

摘要： An optical fiber having a core comprising silica and greater than 1.5 wt % chlorine and less than 0.5 wt % F, said core having a refractive index Δ1MAX, and a inner cladding region having refractive index Δ2MIN surrounding the core, where Δ1MAX>Δ2MIN.

公开(公告)号：US20140140673A1

公开(公告)日：2014-05-22

申请号：US14065599

申请日：2013-10-29

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Kazuhiro YONEZAWA ,  Tadashi ENOMOTO

IPC分类号： C03B37/014 ,  G02B6/028 ,  G02B6/02

CPC分类号： C03B37/01446 ,  C03B37/0146 ,  C03B2201/07 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/24 ,  C03B2203/26 ,  G02B6/02 ,  G02B6/0288 ,  Y02P40/57

摘要： The present invention relates to a preform manufacturing method and others for effectively reducing variation in refractive index due to chlorine used in manufacture of an optical fiber preform. The manufacturing method includes a dechlorination step carried out between a point of an end time of a dehydration step and a point of a start time of a sintering step, the dechlorination step being a step of heating a porous preform after dehydrated, in an atmosphere containing no chlorine-based dehydrating agent, for a given length of time while maintaining a temperature lower than a sintering temperature, thereby removing chlorine from the porous preform after dehydrated.

摘要翻译： 本发明涉及一种用于有效地减少由于在制造光纤预制件时使用的氯引起的折射率变化的预制件制造方法。 制造方法包括在脱水步骤的结束时间点和烧结步骤的开始时间点之间进行的脱氯工序，脱氯工序是在脱水后的多孔预成型体的加热步骤中，在含有 在保持低于烧结温度的温度的同一时间段内，不脱氯脱水剂，从而在脱水后从多孔预型体中除去氯。

公开(公告)号：US20130255323A1

公开(公告)日：2013-10-03

申请号：US13903542

申请日：2013-05-28

申请人： FUJIKURA LTD.

发明人： Shingo MATSUSHITA

IPC分类号： G02B6/02

CPC分类号： G02B6/02395 ,  C03B37/02718 ,  C03B37/02727 ,  C03B2203/24

摘要： Provided is a method for manufacturing an optical fiber. The method includes the steps of: heating and melting a silica-based optical fiber preform in a drawing furnace; drawing the melted preform into a linear shape from the drawing furnace, continuously cooling and solidifying the preform to form a bare optical fiber; coating the bare optical fiber with a resin to form an optical fiber; and continuously taking up the optical fiber while applying a tensile force, wherein, when a surface temperature of the cooled and solidified bare optical fiber reached down to 100° C. or lower, a surface of the bare optical fiber is reheated while applying a tensile force so as to remelt only a surface layer of the bare optical fiber, and the surface layer of the bare optical fiber is re-solidified, the bare optical fiber is coated with a resin, and the tensile force is released afterward.

摘要翻译： 提供了一种制造光纤的方法。 该方法包括以下步骤：在拉丝炉中加热和熔化二氧化硅基光纤预制棒; 将熔融的预成型件从拉丝炉中拉伸成直线形状，连续地冷却和固化预成型件以形成裸光纤; 用树脂涂覆裸光纤以形成光纤; 并且在施加拉力的同时连续卷取光纤，其中当冷却和固化的裸光纤的表面温度达到100℃或更低时，裸光纤的表面被再加热，同时施加拉伸 以仅重熔裸露光纤的表面层，并且裸光纤的表面层被再次固化，裸露的光纤被树脂涂覆，然后拉伸张力。

公开(公告)号：US08406594B2

公开(公告)日：2013-03-26

申请号：US13059686

申请日：2009-08-18

申请人： Thomas Tanggaard Alkeskjold

发明人： Thomas Tanggaard Alkeskjold

IPC分类号： G02B6/02

CPC分类号： H01S3/06754 ,  B29D11/00663 ,  C03B37/01217 ,  C03B37/0122 ,  C03B2201/34 ,  C03B2203/22 ,  C03B2203/24 ,  C03B2203/30 ,  C03B2203/31 ,  C03B2203/32 ,  C03B2203/42 ,  G02B6/02333 ,  G02B6/02361 ,  H01S3/06729 ,  H01S3/06741

摘要： An optical fibre that use index-guidance formed with a low index cladding or a microstructured cladding using voids/holes or low index features (404) together with multiple high index resonant cladding features (1205, 1206). One to three resonant cross sectional extending structure act as a filter by resonantly coupling light out to part of the cladding (1202) or other structures (fx. a high index outer cladding ring) that acts as light sink(s) at one to three wavelength when using one to three materials or features with different size, shape, refractive index profile or normalized frequency parameter. The fibre can be asymmetrical. The fibre can be adapted for suppression of higher order modes (HOM) and/or guiding light in a narrow spectral wavelength range and act as a band pass filter. For enhancing out-coupling the high index features can be arranged along two intersecting lines tangentially positioned in relation to the core and along a line that extends from the core and intersects the tangentially positioned lines. Light absorbing material such as samarium can be used in the light sink. The fibre can be used in a fibre amplifier or fiber laser.

摘要翻译： 一种光纤，其使用由低折射率包层或微结构化包层形成的折射率引导，使用空隙/孔或低折射率特征（404）以及多个高折射率共振覆层特征（1205,1206）。 一至三个谐振截面延伸结构通过将光共振地耦合到一部分包层（1202）或其它结构（fx。高折射率外包层环），作为一个或三个光吸收体 使用一到三种材料或具有不同尺寸，形状，折射率分布或归一化频率参数的特征时的波长。 纤维可以是不对称的。 光纤可适用于抑制高阶模式（HOM）和/或引导窄光谱波长范围内的光，并充当带通滤光器。 为了增强外耦合，可以沿着相对于芯切线定位的两条相交线并且沿着从芯延伸并与切线定位的线相交的线布置高折射率特征。 光吸收材料如钐可用于光接收器。 光纤可用于光纤放大器或光纤激光器。

公开(公告)号：US20080285927A1

公开(公告)日：2008-11-20

申请号：US11814216

申请日：2007-04-20

申请人： Amjad Khan ,  Sanket Shah ,  Jegan Miras

发明人： Amjad Khan ,  Sanket Shah ,  Jegan Miras

IPC分类号： G02B6/02 ,  C03B37/012

CPC分类号： C03B37/01446 ,  C03B2201/31 ,  C03B2203/24

摘要： A method for manufacturing an optical fiber having uniform refractive index profile, and substantially reduced macrobending loss and attenuation loss is provided comprising controlling one or more of parameters including concentration of dopant in outer region and inner region of the core region with respect to middle region of the core region of the optical fiber preform, duration of dehydration process step, concentration of chlorine gas to control refractive index of outer region and inner region of the core region for achieving a fiber having substantially uniform refractive index profile, and substantially reduced macrobending loss and attenuation loss.

摘要翻译： 提供一种制造具有均匀折射率分布的光纤的方法，并且显着降低了宏观弯曲损耗和衰减损耗，包括控制一个或多个参数，所述参数包括在芯区域的外部区域和内部区域中的掺杂剂的浓度相对于 纤维预制棒的核心区域，脱水工艺步骤的持续时间，氯气的浓度以控制外部区域的折射率和芯部区域的内部区域，以实现具有基本均匀的折射率分布的纤维，并且显着降低宏弯曲损耗， 衰减损耗。