-
公开(公告)号：US11860406B2
公开(公告)日：2024-01-02
申请号：US17297716
申请日：2020-11-06
Applicant: Fujikura Ltd.
Inventor： Ryo Maruyama
IPC: G02B6/02
CPC classification number: G02B6/02395
Abstract: An optical fiber includes a glass portion, a primary coating layer, and a secondary coating layer. In the optical fiber, a value of microbend loss characteristic factor FμBL_GΔβ is 6.1 ([GPa−1·μm−2.5/rad8]·10−12) or less when represented by
FμBL_GΔβ=FμBL_G×FμBL_Δβ,
where FμBL_G is geometry microbend loss characteristic and FμBL_Δβ is optical microbend loss characteristic.-
公开(公告)号：US20220026632A1
公开(公告)日：2022-01-27
申请号：US17297716
申请日：2020-11-06
Applicant: Fujikura Ltd.
Inventor： Ryo Maruyama
IPC: G02B6/02
Abstract: An optical fiber includes a glass portion, a primary coating layer, and a secondary coating layer. In the optical fiber, a value of microbend loss characteristic factor FμBL_GΔβ is 6.1 ([GPa−1·μm−2.5/rad8]·10−12) or less when represented by FμBL_GΔβ=FμBL_G×FμBL_Δβ, where FμBL_G is geometry microbend loss characteristic and FμBL_Δβ is optical microbend loss characteristic.
-
公开(公告)号：US20190025503A1
公开(公告)日：2019-01-24
申请号：US15877697
申请日：2018-01-23
Applicant: FUJIKURA LTD.
Inventor： Ryo Maruyama
CPC classification number: G02B6/03627 , G02B6/02009 , G02B6/0281
Abstract: An optical fiber includes a core, a depressed layer surrounding the core, and a cladding surrounding the depressed layer, where a refractive index profile of the core is an α power distribution in which an index α is 3 or more and 6 or less, a relative refractive index difference Δ− of the depressed layer with respect to the adding is set such that an absolute value |Δ−| thereof is 0.01% or more and 0.05% or less, a radius r1 of the core and an outer circumference radius r2 of the depressed layer are set such that a ratio r1/r2 thereof is 0.2 or more and 0.5 or less, a cable cutoff wavelength λcc of 22 m is 1260 nm or less, and a mode field diameter MFD at a wavelength of 1310 nm is 8.6 μm or more and 9.5 μm or less.
-
公开(公告)号：US09772444B2
公开(公告)日：2017-09-26
申请号：US15467264
申请日：2017-03-23
Applicant: Fujikura Ltd.
Inventor： Takayuki Kitamura , Sho Endo , Tatsuya Kishi , Ryo Maruyama
CPC classification number: G02B6/03627 , C03B2201/02 , C03B2201/12 , C03B2201/20 , C03B2203/22 , C03B2203/23 , G02B6/02004 , G02B6/0365
Abstract: An optical fiber including a core and a cladding including an inner cladding layer and an outer cladding layer is provided. The refractive index of the core Δ1, the refractive index of the inner cladding layer Δ2, and the refractive index of the outer cladding layer Δ3 have a relationship denoted by the following expressions: Δ1max>Δ2min and Δ1max>Δ3, and 0.01%
-
公开(公告)号：US11808972B2
公开(公告)日：2023-11-07
申请号：US17743884
申请日：2022-05-13
Applicant: FUJIKURA LTD.
Inventor： Ryo Maruyama , Kenji Yamashiro
IPC: G02B6/02
CPC classification number: G02B6/02395 , G02B6/02214
Abstract: An optical fiber includes a glass portion, a primary coating layer, and a secondary coating layer. In the optical fiber, a value of microbend loss characteristic factor FμBL_GΔβ is 6.1 ([GPa−1·μm−2.5/rad8]·10−12) or less when represented by
FμBL_GΔβ=FμBL_G×FμBL_Δβ,
where FμBL_G is geometry microbend loss characteristic and FμBL_Δβ is optical microbend loss characteristic.-
Patent Agency Ranking
公开(公告)号：US11048039B2
公开(公告)日：2021-06-29
申请号：US16956131
申请日：2019-02-01
Applicant: Fujikura Ltd.
Inventor： Ryo Maruyama
Abstract: An optical fiber includes: a core; a depressed layer surrounding the core; and a cladding surrounding the depressed layer. A refractive index profile of the core is an α-th power distribution having an index α of 1.0 or more and 2.9 or less. A relative refractive index difference Δ− of the depressed layer with respect to the cladding has an absolute value |Δ−| that is 0.05% or more and 0.15% or less. A ratio r1/r2 of a radius r1 of the core to an outer radius r2 of the depressed layer is 0.35 or more and 0.60 or less. A cable cutoff wavelength λcc of 22 m is less than 1.26 μm. A mode field diameter at a wavelength of 1.31 inn is larger than 8.6 inn and smaller than 9.5 μm.
-
公开(公告)号：US10422948B2
公开(公告)日：2019-09-24
申请号：US15877697
申请日：2018-01-23
Applicant: FUJIKURA LTD.
Inventor： Ryo Maruyama
Abstract: An optical fiber includes a core, a depressed layer surrounding the core, and a cladding surrounding the depressed layer, where a refractive index profile of the core is an α power distribution in which an index α is 3 or more and 6 or less, a relative refractive index difference Δ− of the depressed layer with respect to the adding is set such that an absolute value |Δ−| thereof is 0.01% or more and 0.05% or less, a radius r1 of the core and an outer circumference radius r2 of the depressed layer are set such that a ratio r1/r2 thereof is 0.2 or more and 0.5 or less, a cable cutoff wavelength λcc of 22 m is 1260 nm or less, and a mode field diameter MFD at a wavelength of 1310 nm is 8.6 μm or more and 9.5 μm or less.
-
公开(公告)号：US20190049663A1
公开(公告)日：2019-02-14
申请号：US16037186
申请日：2018-07-17
Applicant: FUJIKURA LTD.
Inventor： Ryo Maruyama
CPC classification number: G02B6/03644 , G02B6/02009 , G02B6/021 , G02B6/02214 , G02B6/02342 , G02B6/0281 , G02B6/0288 , G02B6/03627
Abstract: An optical fiber includes a core, a depressed inner cladding surrounding the core, and an outer cladding surrounding the inner cladding, where a refractive index profile of the core includes an α power distribution in which an index α is 3.5 or more and 6 or less, a relative refractive index difference Δ− of the inner cladding with respect to the adding is set such that an absolute value |Δ−| thereof is 0.01% or more and 0.045% or less, a radius r1 of the core and an outer circumference radius r2 of the inner cladding are set such that a ratio r1/r2 thereof is 0.2 or more and 0.6 or less, a cable cutoff wavelength λcc of 22 m is 1260 nm or less, and a mode field diameter MFD at a wavelength of 1310 nm is 8.6 μm or more and 9.5 μm or less.
-
公开(公告)号：US09507082B2
公开(公告)日：2016-11-29
申请号：US14419738
申请日：2014-02-05
Applicant: FUJIKURA LTD.
Inventor： Ryo Maruyama , Nobuo Kuwaki , Shoichiro Matsuo
CPC classification number: G02B6/02047 , G02B6/02238 , G02B6/0281 , G02B6/03627
Abstract: Optical fibers Fp, Fn, included in a light transmission path, are two-mode optical fibers for propagating an LP01 mode component and an LP11 mode component contained in signal light, and a gradient dΔτ/dλ of a mode dispersion Δτ with respect to a wavelength λ in a wavelength band of 1530 nm to 1625 nm is |0.5| ps/km/nm or less. Symbols of mode dispersions Δτ of the optical fibers Fp, Fn are opposite to each other. The light transmission path can satisfactorily compensate the mode dispersion in a wide wavelength band.
Abstract translation: 包括在光传输路径中的光纤Fp，Fn是用于传播包含在信号光中的LP01模式分量和LP11模式分量的双模光纤，以及相对于a的模式色散Δτ的梯度dΔτ/dλ 在1530nm至1625nm的波长带中的波长λ为| 0.5 | ps / km / nm以下。 光纤Fp，Fn的模式色散Δτ的符号彼此相反。 光传输路径可以令人满意地补偿宽波段中的模式色散。
-
公开(公告)号：US11803007B2
公开(公告)日：2023-10-31
申请号：US17743946
申请日：2022-05-13
Applicant: FUJIKURA LTD.
Inventor： Ryo Maruyama , Kenji Yamashiro
IPC: G02B6/02
CPC classification number: G02B6/02395 , G02B6/02214
Abstract: An optical fiber includes a glass portion, a primary coating layer, and a secondary coating layer. In the optical fiber, a value of microbend loss characteristic factor FμBL_GO is 2.6 ([GPa−1·μm−10.5·dB/turn]·10−27) or less, when represented by
FμBL_GO=FμBL_G×FμBL_O
by using geometry microbend loss characteristic FμBL_G and optical microbend loss characteristic FμBL_O.
-
-
-
-
-
-
-
-
-
Search Results
26
records
(took 0.017 seconds)
