-
公开(公告)号：US11435518B2
公开(公告)日：2022-09-06
申请号：US17200458
申请日：2021-03-12
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Minoru Kasahara , Yoshihiro Arashitani , Kouji Mochiduki , Masahiro Yabe
IPC: G02B6/02 , C03C25/105 , C03C25/1065
Abstract: Provided is a coated optical fiber and an optical fiber cable capable of suppressing transmission loss (microbend loss) even in an optical fiber having high microbend sensitivity.
In the present invention, the degree of freedom of a primary layer 11 represented by the equation (I) and the rigidity of a secondary layer 12 represented by the equation (II) are set in specific ranges, respectively. Thus, the present invention provides a coated optical fiber 1 capable of suppressing the transmission loss even when an optical fiber 10 having high microbend sensitivity such as a BI fiber having a large effective core cross-sectional area Aeff of an optical fiber is used. The present invention can be widely used as a coated optical fiber 1 constituting a coated optical fiber ribbon or as a coated optical fiber 1 housed in an optical fiber cable. Further, an optical fiber cable including such coated optical fibers 1 enjoys the effect of the above-described coated optical fiber 1. [Math. 1] βP×PISM≥600 (I) (S/P)×(SISM/PISM)≤1,000 (II)-
公开(公告)号：US09411115B2
公开(公告)日：2016-08-09
申请号：US14704503
申请日：2015-05-05
Applicant: Furukawa Electric Co., Ltd.
Inventor： Hiroki Tanaka , Minoru Saito , Hirotaka Watanabe , Hiroaki Ito , Yukio Ishii , Yoshihiro Arashitani
IPC: G02B6/44
CPC classification number: G02B6/443 , G02B6/44 , G02B6/4403
Abstract: An optical fiber ribbon according to the present invention includes a collective coating layer containing an ultraviolet curable resin containing amorphous PPG and an amorphous monomer, the collective coating layer formed around coated optical fibers. The collective coating layer has an equilibrium elastic modulus of 12 MPa to 20 MPa, both inclusive, and a yield point elongation of 5% to 9%, both inclusive, and the adhesion between the collective coating layer and the outermost layers of the coated optical fibers is 12 N/cm to 15 N/cm, both inclusive.
Abstract translation: 根据本发明的光纤带包括含有含有无定形PPG和无定形单体的紫外线固化树脂的集合涂层，在涂覆光纤周围形成集合涂层。 集合涂层的平均弹性模量为12MPa〜20MPa，屈服点伸长率为5％〜9％，并且涂布光学元件的集合涂层与最外层之间的粘合力 纤维为12N / cm至15N / cm，包括端面。
-
公开(公告)号：US11036024B2
公开(公告)日：2021-06-15
申请号：US16428739
申请日：2019-05-31
Applicant: Furukawa Electric Co., Ltd.
Inventor： Hiroki Tanaka , Kenji Yokomizo , Tomohiro Ishimura , Yutaka Hoshino , Masaki Iwama , Eisuke Otani , Shunichi Matsushita , Yoshihiro Arashitani , Takeshi Yagi
Abstract: A method for manufacturing an intermittent bonding type optical fiber ribbon which is capable of forming non-connection portions and intermittent connection portions between adjacent coated optical fibers formed into an optical fiber ribbon by performing a laser processing for the ribbon through irradiation with a pulse laser light, thereby making it possible to rapidly form the intermittent connection portions and the non-connection portions while maintaining high linear velocity of the coated optical fiber. The non-connection portions and the intermittent connection portions are formed in the obtained intermittent bonding type optical fiber ribbon through the irradiation with the pulse laser light, so the intermittent bonding type optical fiber ribbon becomes the intermittent bonding type optical fiber ribbon, which is capable of securing operability during collective connection and surely being subjected to an intermediate branching without damaging cable characteristics during high density mounting.
-
公开(公告)号：US10882783B2
公开(公告)日：2021-01-05
申请号：US15995796
申请日：2018-06-01
Applicant: Furukawa Electric Co., Ltd.
Inventor： Hiroki Tanaka , Yutaka Hoshino , Hirotaka Watanabe , Yoshihiro Arashitani , Kenji Yokomizo , Tomohiro Ishimura
IPC: C03C25/24 , C03C25/105 , C03C25/475 , C03C25/104 , G02B6/44 , G02B6/02
Abstract: An optical fiber ribbon is intermittently connected in a length direction by an intermittent connection which includes a polyol having a weight-average molecular weight of 3000 to 4000 in a specific amount relative to the entire intermittent connection and which has Young's modulus at 23° C. within a specific range. When collectively unitizing optical fiber ribbons to form an optical fiber cable, an optical fiber ribbon is formed which maintains advantages of the optical fiber ribbon and which prevents cracks of the intermittent connection and detachment of the intermittent connection from a colored optical fiber core when the cable is subjected to repetitive ironing.
-
公开(公告)号：US10793470B2
公开(公告)日：2020-10-06
申请号：US14800160
申请日：2015-07-15
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Takeshi Saito , Kenichi Suyama , Yoshihiro Arashitani
Abstract: An optical fiber including a glass core, and a polymer cladding formed around the glass core, the polymer cladding containing a mixture of a polymerizable composition and a silane coupling agent, and a fluorine-based ultraviolet curable resin. The mixture contains 5 to 95 parts by weight of the silane coupling agent based on 100 parts by weight of the total weight of the mixture. The fluorine-based ultraviolet curable resin alone has a refractive index in a range of 1.350 to 1.420 after ultraviolet curing. A component originated from the silane coupling agent is concentrated within a range of 20 μm or less in the polymer cladding from an interface between the glass core and the polymer cladding.
-
Patent Agency Ranking
公开(公告)号：US09841558B2
公开(公告)日：2017-12-12
申请号：US15405770
申请日：2017-01-13
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Hiroki Tanaka , Minoru Kasahara , Junpei Watanabe , Kenichi Suyama , Yoshihiro Arashitani
CPC classification number: G02B6/02395 , C03C25/1065 , C03C25/24 , C03C25/475 , G02B6/44 , G02B6/4403 , G02B6/4482
Abstract: The present invention provides a two-layer structure colored optical fiber which includes a colored secondary coating layer improved in collectability and separability. The two-layer structure colored optical fiber in an embodiment of the present invention includes a glass optical fiber, a primary coating layer coating the glass optical fiber, and a colored secondary coating layer coating the primary coating layer. The secondary coating layer has such characteristics that a surface cure percentage is 99% or more at an infrared absorption peak of a wave number of 1407 cm−1 and a surface kinetic friction force in Knot Test is less than 0.075 N.
-
公开(公告)号：US20150315072A1
公开(公告)日：2015-11-05
申请号：US14800160
申请日：2015-07-15
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Takeshi SAITO , Kenichi Suyama , Yoshihiro Arashitani
Abstract: In an embodiment of the present invention, provided is an optical fiber including a glass core, and a polymer cladding formed around the glass core, the polymer cladding containing a mixture of a polymerizable composition and a silane coupling agent, and a fluorine-based ultraviolet curable resin. The mixture contains 5 to 95 parts by weight of the silane coupling agent based on 100 parts by weight of the total weight of the mixture. The fluorine-based ultraviolet curable resin alone has a refractive index in a range of 1.350 to 1.420 after ultraviolet curing. A component originated from the silane coupling agent is concentrated within a range of 20 μm or less in the polymer cladding from an interface between the glass core and the polymer cladding.
Abstract translation: 在本发明的一个实施例中，提供了一种包括玻璃芯和在玻璃芯周围形成的聚合物包层的光纤，聚合物包层包含可聚合组合物和硅烷偶联剂的混合物，以及氟基紫外线 可固化树脂。 基于100重量份的混合物的总重量，该混合物含有5-95重量份的硅烷偶联剂。 紫外线固化后，单独使用氟系紫外线固化型树脂的折射率为1.350〜1.420。 来自硅烷偶联剂的组分在聚合物包层中从玻璃芯和聚合物包层之间的界面集中在20μm以下的范围内。
-
公开(公告)号：US20130266281A1
公开(公告)日：2013-10-10
申请号：US13754985
申请日：2013-01-31
Applicant: FURUKAWA ELECTRIC CO., LTD
Inventor： Hiroki TANAKA , Yasuo Nakajima , Kouji Mochizuki , Yoshihiro Arashitani
IPC: G02B6/02
CPC classification number: G02B6/02395 , G02B6/4482
Abstract: The present invention provides a colored coated optical fiber which hardly has an increase in transmission loss even when immersed in water. A colored coated optical fiber according to one embodiment of the present invention includes a glass optical fiber, a primary coating layer covering the glass optical fiber, a secondary coating layer covering the primary coating layer, and a colored layer covering the secondary coating layer. A ratio of a thermal expansion coefficient of a laminate including the secondary coating layer and the colored layer covering the secondary coating layer to that of the secondary coating layer is 0.98 or more and 1.03 or less. A ratio of a glass transition temperature based on a dynamic viscoelasticity within a temperature range from −100° C. to 150° C. of the laminate to that of the secondary coating layer is 0.96 or more and 1.03 or less.
Abstract translation: 本发明提供一种着色涂层光纤，即使在浸入水中也难以增加传输损耗。 根据本发明的一个实施方案的着色涂层光纤包括玻璃光纤，覆盖玻璃光纤的主要涂层，覆盖第一涂层的二次涂覆层和覆盖第二涂层的着色层。 包含第二被覆层和覆盖第二被覆层的着色层的层叠体的热膨胀系数与第二被覆层的热膨胀系数的比率为0.98以上且1.03以下。 基于层压体的-100℃至150℃的温度范围内的基于动态粘弹性的玻璃化转变温度与二次涂层的比例为0.96以上且1.03以下。
-
公开(公告)号：US11846407B2
公开(公告)日：2023-12-19
申请号：US17324645
申请日：2021-05-19
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Zyunpei Watanabe , Hiroki Tanaka , Kenichi Suyama , Yoshihiro Arashitani
IPC: F21V15/01 , C03C25/12 , C23C16/54 , C03C25/6226 , H05B45/10 , B29C33/06 , H05B1/02 , B29C35/08 , B05C9/14 , B29C35/10 , A61N5/06 , F21Y105/18 , F21Y105/14 , F21Y105/12
CPC classification number: F21V15/01 , B05C9/14 , B29C33/06 , B29C35/0888 , B29C35/10 , C03C25/12 , C03C25/6226 , C23C16/545 , H05B1/023 , H05B45/10 , A61N2005/0652 , B29C2035/0827 , B32B2310/0831 , F21Y2105/12 , F21Y2105/14 , F21Y2105/18
Abstract: A bare optical fiber manufacturing method includes applying an ultraviolet curable resin applied around an optical fiber; and irradiating the ultraviolet curable resin with ultraviolet light emitted from semiconductor ultraviolet light emitting elements, by use of an ultraviolet irradiation device having plural ultraviolet irradiation units each having plural positions where the ultraviolet light is emitted toward the ultraviolet curable resin, the plural positions being arranged on the same circle, the plural ultraviolet irradiation units being arranged in a traveling direction of the optical fiber such that the optical fiber passes centers of the circles, at least two of the plural ultraviolet irradiation units being differently arranged with respect to circumferential direction angles thereof around an axis that is the traveling direction of the optical fiber.
-
公开(公告)号：US11105992B2
公开(公告)日：2021-08-31
申请号：US17014722
申请日：2020-09-08
Applicant: FURUKAWA ELECTRIC CO., LTD.
Inventor： Hiroki Tanaka , Kenji Yokomizo , Tomohiro Ishimura , Hirotaka Watanabe , Yoshihiro Arashitani
IPC: G02B6/44
Abstract: Provided is an optical fiber ribbon and an optical fiber cable, which are adaptable to manufacture at a high velocity, in the intermittent connecting type optical fiber ribbon obtained by adhering and connecting adjacent colored optical fibers by intermittent connecting portions. In an optical fiber ribbon 2 of the present invention, since, in addition to polyol having a weight average molecular weight in a specific range, rheology control agent is contained in a specific range in a material forming an intermittent connecting portion 3, the Newtonian region between a low shear rate region and a high shear rate region of the material forming the intermittent connecting portion 3 can be adjusted. Thus, scattering of the material due to a centrifugal force generated by rotation of an application roll that applies the material at the time of manufacture and the like can be suppressed, and the application amount to colored optical fiber 1 can be stabilized. In addition, the optical fiber ribbon 2 can maintain suppression of such scattering and the like even in the manufacture at a high linear velocity.
-
-
-
-
-
-
-
-
-
Search Results
19
records
(took 0.012 seconds)
