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1. 发明公开

US20230358949A1 OPTICAL FIBER, OPTICAL FIBER TAPE CORE WIRE, AND OPTICAL FIBER CABLE 审中-公开
公开(公告)号：US20230358949A1
公开(公告)日：2023-11-09
申请号：US18353376
申请日：2023-07-17
申请人： FURUKAWA ELECTRIC CO., LTD.
发明人： Kazunori MUKASA , Minoru KASAHARA , Keiichi AISO , Yukihiro TSUCHIDA , Naoya YOMOGITA , Takumi SUGANE , Ichihiko SUGANUMA , Tomoaki GONOHE , Mitsuhiro IWAYA , Zoltan VARALLYAY , Tamas MIHALFFY
IPC分类号： G02B6/02 , G02B6/036
CPC分类号： G02B6/02395 , G02B6/02019 , G02B6/03627
摘要： An optical fiber includes: a core portion made of glass; a side core layer made of glass and enclosing the core portion; a cladding portion made of glass and enclosing the side core layer; and a coating layer including a primary layer made of resin and enclosing the cladding portion, and a secondary layer made of resin and enclosing the primary layer. The relationships Δ1>ΔClad>Δ2 and 0>Δ2 are satisfied where Δ1 represents relative refractive-index difference of average maximum refractive index of the core portion with respect to average refractive index of the cladding portion, Δ2 represents relative refractive-index difference of average refractive index of the side core layer with respect to average refractive index of the cladding portion, and ΔClad represents relative refractive-index difference of average refractive index of the cladding portion with respect to refractive index of pure silica glass.

2. 发明申请

US20170107145A1 METHOD OF PRODUCING AN OPTICAL FIBER AND APPARATUS OF PRODUCING THE OPTICAL FIBER 审中-公开
公开(公告)号：US20170107145A1
公开(公告)日：2017-04-20
申请号：US15390131
申请日：2016-12-23
申请人： FURUKAWA ELECTRIC CO., LTD.
发明人： Kenichi SUYAMA , Yoshihiro ARASHITANI , Hiroki TANAKA , Minoru KASAHARA , Kazuyoshi AKIZUKI
IPC分类号： C03C25/62 , C03C25/28 , C03C25/12
摘要： A method of producing an optical fiber, containing: (a) a resin application step of applying an ultraviolet curable resin, onto an outer circumference of an optical fiber; (b) a heating step of heating the ultraviolet curable resin; and (c) a light irradiation step of irradiating the ultraviolet curable resin with ultraviolet light emitted from a semiconductor light emitting element, in a state in which the ultraviolet curable resin is heated, to cure the ultraviolet curable resin into a coating resin.

3. 发明申请

US20170131511A1 COLORED OPTICAL FIBER 有权
公开(公告)号：US20170131511A1
公开(公告)日：2017-05-11
申请号：US15405770
申请日：2017-01-13
申请人： FURUKAWA ELECTRIC CO., LTD.
发明人： Hiroki TANAKA , Minoru KASAHARA , Junpei WATANABE , Kenichi SUYAMA , Yoshihiro ARASHITANI
IPC分类号： G02B6/44 , C03C25/24 , G02B6/02 , C03C25/10
CPC分类号： G02B6/02395 , C03C25/1065 , C03C25/24 , C03C25/475 , G02B6/44 , G02B6/4403 , G02B6/4482
摘要： 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.

4. 发明申请

US20140301704A1 COLORED OPTICAL FIBER, OPTICAL FIBER RIBBON AND OPTICAL FIBER CABLE 有权
标题翻译：彩色光纤，光纤光纤和光纤电缆
公开(公告)号：US20140301704A1
公开(公告)日：2014-10-09
申请号：US14309380
申请日：2014-06-19
申请人： FURUKAWA ELECTRIC CO., LTD.
发明人： Hiroki TANAKA , Minoru SAITO , Minoru KASAHARA , Yasuo NAKAJIMA , Yoshihiro ARASHITANI
IPC分类号： G02B6/44 , G02B6/02
CPC分类号： G02B6/02395 , C03C25/1065 , C03C25/285 , G02B6/4403 , G02B6/4409
摘要： A colored optical fiber including a glass optical fiber; a primary coating layer that covers the glass optical fiber; a secondary coating layer that covers the primary coating layer; and a colored layer that coats the secondary coating layer. The relaxation modulus after 24 hours at 60° C. of of the layers coated is 140 MPa or less.
摘要翻译：包括玻璃光纤的彩色光纤; 覆盖玻璃光纤的主要涂层; 覆盖第一涂层的二次涂层; 以及涂覆第二涂层的着色层。所涂层的60℃下24小时后的松弛模量为140MPa以下。

5. 发明公开

US20230418015A1 COLORED OPTICAL FIBER, OPTICAL FIBER RIBBON, ASSEMBLY CABLE OF SINGLE FIBERS, OPTICAL FIBER RIBBON CABLE AND METHOD FOR MANUFACTURING THE SAME 审中-公开
公开(公告)号：US20230418015A1
公开(公告)日：2023-12-28
申请号：US18462856
申请日：2023-09-07
申请人： FURUKAWA ELECTRIC CO., LTD.
发明人： Kuniaki ISHIZUKI , Minoru KASAHARA , Mitsuhiro IWAYA
IPC分类号： G02B6/44
CPC分类号： G02B6/4482 , G02B6/448
摘要： A colored optical fiber comprises a bare optical fiber, a primary layer formed of a first ultraviolet curing resin covering the bare optical fiber, and a secondary layer formed of a second ultraviolet curing resin covering the primary layer, wherein a Young's modulus of the primary layer is smaller than 70% with respect to a saturated Young's modulus of the primary layer, and wherein the saturated Young's modulus of the primary layer is smaller than or equal to 0.85 MPa.

6. 发明公开

US20230257301A1 COLORED OPTICAL FIBER, OPTICAL FIBER RIBBON, ASSEMBLY CABLE OF SINGLE FIBERS, RIBBON CABLE AND METHOD FOR MANUFACTURING THE SAME 审中-公开
公开(公告)号：US20230257301A1
公开(公告)日：2023-08-17
申请号：US18305485
申请日：2023-04-24
申请人： FURUKAWA ELECTRIC CO., LTD.
发明人： Kuniaki ISHIZUKI , Minoru KASAHARA , Mitsuhiro IWAYA
IPC分类号： C03C25/6226 , G02B6/44 , C03C25/1065 , C03C25/105
CPC分类号： C03C25/6226 , G02B6/4403 , C03C25/1065 , C03C25/105 , C03C2218/32
摘要： Provided is a colored optical fiber of which a primary layer is easily formed. The colored optical fiber includes a bare optical fiber, a primary layer formed of an ultraviolet curing resin covering the bare optical fiber, and a secondary layer formed of an ultraviolet curing resin covering the primary layer. Young's modulus of the primary layer is smaller than 70% with respect to a saturated Young's modulus of the primary layer. The saturated Young's modulus of the primary layer is larger than or equal to 0.84 MPa.

7. 发明申请

US20150293325A1 COATED OPTICAL FIBER, OPTICAL FIBER RIBBON, AND OPTICAL CABLE 有权
标题翻译：涂层光纤，光纤玻璃纤维和光缆
公开(公告)号：US20150293325A1
公开(公告)日：2015-10-15
申请号：US14296003
申请日：2014-06-04
申请人： Furukawa Electric Co., Ltd.
发明人： Minoru KASAHARA , Minoru SAITO , Yoshihiro ARASHITANI
IPC分类号： G02B6/44 , G02B6/02
CPC分类号： G02B6/4494 , G02B6/02395 , G02B6/4403 , G02B6/4404
摘要： The purpose of the present invention is to provide, by a configuration or method different from conventional art, a coated optical fiber enabling reduced interface delamination between a glass fiber and a primary coating layer when the coated optical fiber is immersed in water, and a reduction of transmission loss increase. A coated optical fiber according to one embodiment of the present invention is provided with a glass fiber, a primary coating layer coated on the glass fiber, a secondary coating layer coated on the primary coating layer, and a colored layer coated on the secondary coating layer. The coated optical fiber is configured so that small water bubbles are generated substantially evenly within the primary coating layer when the coated optical fiber is immersed for 200 days in warm water of 60° C.
摘要翻译：本发明的目的是通过与传统技术不同的结构或方法来提供一种涂覆光纤，当涂覆的光纤浸入水中时，能够减少玻璃纤维和主要涂层之间的界面分层，并且还原的传输损耗增加。根据本发明的一个实施方案的涂覆光纤具有玻璃纤维，涂覆在玻璃纤维上的主涂层，涂覆在第一涂层上的二次涂层和涂覆在第二涂层上的着色层。涂覆光纤被配置为使得当涂覆的光纤在60℃的温水中浸渍200天时，在主涂层内基本上均匀地产生小的水泡。

8. 发明公开

US20240116808A1 COLORED OPTICAL FIBER, OPTICAL FIBER RIBBON, OPTICAL FIBER RIBBON CABLE AND METHOD FOR MANUFACTURING THE SAME 审中-公开
公开(公告)号：US20240116808A1
公开(公告)日：2024-04-11
申请号：US18536408
申请日：2023-12-12
申请人： FURUKAWA ELECTRIC CO., LTD.
发明人： Kuniaki ISHIZUKI , Minoru KASAHARA , Mitsuhiro IWAYA
IPC分类号： C03C25/1065 , C03C25/105
CPC分类号： C03C25/1065 , C03C25/105 , C03C2218/32
摘要： A colored optical fiber includes a bare optical fiber, a primary layer formed of a first ultraviolet curing resin covering the bare optical fiber and a secondary layer formed of a second ultraviolet curing resin covering the primary layer. An outer diameter of the secondary layer is smaller than or equal to 210 μm. A Young's modulus of the primary layer is smaller than or equal to 88% with respect to a saturated Young's modulus of the primary layer.

9. 发明申请

US20220397732A1 COATED OPTICAL FIBER, OPTICAL FIBER CABLE, AND COATED OPTICAL FIBER RIBBON 有权
公开(公告)号：US20220397732A1
公开(公告)日：2022-12-15
申请号：US17821537
申请日：2022-08-23
申请人： FURUKAWA ELECTRIC CO., LTD.
发明人： Minoru KASAHARA , Yoshihiro ARASHITANI , Kouji MOCHIDUKI , Masahiro YABE
IPC分类号： G02B6/44 , G02B6/02
摘要： The present invention satisfies at least one of the condition of the degree of freedom of a primary layer 11 shown in the equation (I) and the condition of the rigidity of a secondary layer 12 shown in the equation (II). Thus, a coated optical fiber 1 capable of suppressing transmission loss in a low temperature environment is provided, in which, even when an optical fiber 10 having a large effective core cross-sectional area Aeff of the optical fiber 10 at a wavelength of 1550 nm and having high microbend sensitivity is used, transmission loss in a low temperature environment can be suppressed. [Math. 1] βP×PISM

10. 发明申请

US20210199883A1 COATED OPTICAL FIBER AND OPTICAL FIBER CABLE 有权
公开(公告)号：US20210199883A1
公开(公告)日：2021-07-01
申请号：US17200458
申请日：2021-03-12
申请人： FURUKAWA ELECTRIC CO. LTD.
发明人： Minoru KASAHARA , Yoshihiro ARASHITANI , Kouji MOCHIDUKI , Masahiro YABE
IPC分类号： G02B6/02 , C03C25/1065 , C03C25/105
摘要： 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)

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