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1. 发明申请

US20120134637A1 MULTI-CORE OPTICAL FIBER AND METHOD OF MANUFACTURING THE SAME 审中-公开
标题翻译：多芯光纤及其制造方法
公开(公告)号：US20120134637A1
公开(公告)日：2012-05-31
申请号：US13360853
申请日：2012-01-30
申请人： Katsunori IMAMURA
发明人： Katsunori IMAMURA
IPC分类号： G02B6/036 , C03B37/14
CPC分类号： G02B6/02042 , G02B6/0365
摘要： A multi-core optical fiber includes: a plurality of core portions; and a cladding portion positioned so as to surround each of the core portions, wherein each core portion includes a center core portion that has a refractive index greater than that of the cladding portion, a second core portion that is formed so as to surround the center core portion and that has a refractive index less than that of the center core portion, and a depressed portion that is formed so as to surround the second core portion and that has a refractive index less than those of the second core portion and the cladding portion, and an interval distance between the adjacent core portions is set such that optical cross-talk between the core portions for a total length of the multi-core optical fiber is equal to or less than −30 dB at a wavelength of 1.55 μm.
摘要翻译：多芯光纤包括：多个芯部; 以及包围部，其以每个芯部包围的方式设置，其特征在于，所述芯部具有折射率大于所述包层部的折射率的中心芯部，形成为围绕所述中心的中心部芯部，折射率小于中心芯部的折射率;凹部，其形成为包围第二芯部，折射率小于第二芯部和包层部的折射率并且相邻芯部之间的间隔距离被设定为使得在多芯光纤的总长度的芯部之间的光学串扰在1.55μm的波长下等于或小于-30dB。

2. 发明申请

US20120008908A1 MULTI-CORE OPTICAL FIBER 有权
标题翻译：多芯光纤
公开(公告)号：US20120008908A1
公开(公告)日：2012-01-12
申请号：US13238902
申请日：2011-09-21
申请人： Katsunori IMAMURA
发明人： Katsunori IMAMURA
IPC分类号： G02B6/02
CPC分类号： G02B6/02042 , G02B6/02019 , G02B6/02333 , G02B6/02338 , G02B6/02347 , G02B6/02357
摘要： A multi-core optical fiber includes: a plurality of core portions; and a cladding portion positioned around the plurality of core portions and including a marker for identifying a position of a specific one of the plurality of core portions.
摘要翻译：多芯光纤包括：多个芯部; 以及围绕所述多个芯部设置的包层部，并且包括用于识别所述多个芯部中的特定一个的部分的位置的标记。

3. 发明申请

US20110206331A1 MULTI-CORE OPTICAL FIBER 有权
标题翻译：多芯光纤
公开(公告)号：US20110206331A1
公开(公告)日：2011-08-25
申请号：US13045039
申请日：2011-03-10
申请人： Katsunori IMAMURA
发明人： Katsunori IMAMURA
IPC分类号： G02B6/036
CPC分类号： G02B6/02042 , C03B37/01222 , C03B37/0128 , C03B2201/31 , C03B2203/34 , Y02P40/57
摘要： A multi-core optical fiber includes a plurality of core portions. The diameter of each of the core portions is 12 micrometers or smaller, the relative refractive-index difference of the core portions with respect to the cladding portion is 0.2% or larger, the cut-off wavelength is 1.53 micrometers or smaller, the bending loss at a 1.55-micrometer wavelength is 10 dB/m or smaller, the effective core area at a 1.55-micrometer wavelength is 30 μm2 or larger, and the cross-talk of light between the core portions is −35 decibels or smaller.
摘要翻译：多芯光纤包括多个芯部。芯部的直径为12微米以下，芯部相对于包层部的相对折射率差为0.2％以上，截止波长为1.53微米以下，弯曲损耗在1.55微米的波长下，在1.55微米波长处的有效核心面积为30平方米或更大，并且核心部分之间的光的串扰为-35分贝或更小。

4. 发明申请

US20090148112A1 OPTICAL FIBER 失效
标题翻译：光纤
公开(公告)号：US20090148112A1
公开(公告)日：2009-06-11
申请号：US12196429
申请日：2008-08-22
申请人： Yahei KOYAMADA , Katsunori Imamura
发明人： Yahei KOYAMADA , Katsunori Imamura
IPC分类号： G02B6/036
CPC分类号： G02B6/03638 , G02B6/02019 , G02B6/02266
摘要： A silica-based optical fiber includes a core and a cladding that is formed on an outer circumference of the core. The core includes three or more layers including a layer doped with at least one of germanium and fluorine, and a concentration of the germanium or the fluorine in each of the layers is controlled in such a manner that a Brillouin gain spectral peak is spread into a plurality of peaks on a Brillouin gain spectrum. With this scheme, an optical fiber is provided, which has stable characteristics in the longitudinal direction, and which has a high SBS threshold so that generation of the SBS can be effectively suppressed.
摘要翻译：二氧化硅基光纤包括形成在芯的外圆周上的芯和包层。芯包括三层或更多层，包括掺杂有锗和氟中的至少一种的层，并且以这样的方式控制每层中的锗或氟的浓度，使得布里渊增益光谱峰扩散到布里渊增益谱上的多个峰。通过该方案，提供了在纵向上具有稳定特性并且具有高SBS阈值的光纤，从而可以有效地抑制SBS的产生。

5. 发明授权

US07492999B2 Optical fiber and optical-fiber transmission line 有权
标题翻译：光纤和光纤传输线
公开(公告)号：US07492999B2
公开(公告)日：2009-02-17
申请号：US12046059
申请日：2008-03-11
申请人： Katsunori Imamura
发明人： Katsunori Imamura
IPC分类号： G02B6/02
CPC分类号： G02B6/02242 , G02B6/02014 , G02B6/02271 , G02B6/03644
摘要： An optical fiber transmits at least a signal light having a wavelength of 1550 nanometers in a fundamental propagation mode. The optical fiber has, a cutoff wavelength equal to or longer than 1550 nanometers, a wavelength dispersion of 4 ps/nm/km to 7 ps/nm/km in the fundamental propagation mode at the wavelength of 1550 nanometers, a dispersion slope of a positive value equal to or smaller than 0.03 ps/nm2/km in the fundamental propagation mode at the wavelength of 1550 nanometers, an effective core area equal to or larger then 60 μm2 in the fundamental propagation mode at the wavelength of 1550 nanometers, and a bending loss equal to or smaller than 20 dB/m with a winding of 16 turns at a diameter of 20 millimeters in the fundamental propagation mode at the wavelength of 1550 nanometers.
摘要翻译：光纤至少在基本传播模式下传输波长为1550纳米的信号光。该光纤具有等于或大于1550纳米的截止波长，在1550纳米的波长的基本传播模式下的波长色散为4ps / nm / km至7ps / nm / km，色散斜率为在1550纳米的波长的基本传播模式下的正值等于或小于0.03ps / nm 2 / km，在基波传播模式下在1550纳米处的有效核心面积等于或大于60mum2，以及弯曲损耗等于或小于20dB / m，在基波传播模式下，在1550纳米波长下，直径为20毫米的绕组为16匝。

6. 发明申请

US20080226246A1 OPTICAL FIBER AND OPTICAL-FIBER TRANSMISSION LINE 有权
标题翻译：光纤和光纤传输线
公开(公告)号：US20080226246A1
公开(公告)日：2008-09-18
申请号：US12046059
申请日：2008-03-11
申请人： Katsunori IMAMURA
发明人： Katsunori IMAMURA
IPC分类号： G02B6/036
CPC分类号： G02B6/02242 , G02B6/02014 , G02B6/02271 , G02B6/03644
摘要： An optical fiber transmits at least a signal light having a wavelength of 1550 nanometers in a fundamental propagation mode. The optical fiber has, a cutoff wavelength equal to or longer than 1550 nanometers, a wavelength dispersion of 4 ps/nm/km to 7 ps/nm/km in the fundamental propagation mode at the wavelength of 1550 nanometers, a dispersion slope of a positive value equal to or smaller than 0.03 ps/nm2/km in the fundamental propagation mode at the wavelength of 1550 nanometers, an effective core area equal to or larger then 60 μm2 in the fundamental propagation mode at the wavelength of 1550 nanometers, and a bending loss equal to or smaller than 20 dB/m with a winding of 16 turns at a diameter of 20 millimeters in the fundamental propagation mode at the wavelength of 1550 nanometers.
摘要翻译：光纤至少在基本传播模式下传输波长为1550纳米的信号光。该光纤具有等于或大于1550纳米的截止波长，在1550纳米的波长的基本传播模式下的波长色散为4ps / nm / km至7ps / nm / km，色散斜率为在1550纳米的波长的基本传播模式下，正值等于或小于0.03ps / nm 2 / km，有效核心面积等于或大于60μm2 / SUP>在1550纳米的波长的基本传播模式下，弯曲损耗等于或小于20dB / m，在基波传播模式下，在1550纳米的波长下，直径为20毫米的绕组为16匝。

7. 发明授权

US08532454B2 Multi-core optical fiber 有权
标题翻译：多芯光纤
公开(公告)号：US08532454B2
公开(公告)日：2013-09-10
申请号：US13045039
申请日：2011-03-10
申请人： Katsunori Imamura
发明人： Katsunori Imamura
IPC分类号： G02B6/02
CPC分类号： G02B6/02042 , C03B37/01222 , C03B37/0128 , C03B2201/31 , C03B2203/34 , Y02P40/57
摘要： A multi-core optical fiber includes a plurality of core portions. The diameter of each of the core portions is 12 micrometers or smaller, the relative refractive-index difference of the core portions with respect to the cladding portion is 0.2% or larger, the cut-off wavelength is 1.53 micrometers or smaller, the bending loss at a 1.55-micrometer wavelength is 10 dB/m or smaller, the effective core area at a 1.55-micrometer wavelength is 30 μm2 or larger, and the cross-talk of light between the core portions is −35 decibels or smaller.
摘要翻译：多芯光纤包括多个芯部。芯部的直径为12微米以下，芯部相对于包层部的相对折射率差为0.2％以上，截止波长为1.53微米以下，弯曲损耗在1.55微米波长处为10dB / m或更小，1.55微米波长的有效核心面积为30mum2或更大，并且核心部分之间的光的串扰为-35分贝或更小。

8. 发明申请

US20100054742A1 MULTI-CORE HOLEY FIBER AND OPTICAL TRANSMISSION SYSTEM 有权
标题翻译：多孔光纤和光传输系统
公开(公告)号：US20100054742A1
公开(公告)日：2010-03-04
申请号：US12546894
申请日：2009-08-25
申请人： Katsunori IMAMURA
发明人： Katsunori IMAMURA
IPC分类号： H04J14/02 , G02B6/036
CPC分类号： G02B6/02042 , G02B6/02333 , G02B6/02347 , H04J14/02
摘要： A multi-core holey fiber with suppression of crosstalk deterioration among transmitted optical signals in a plurality of cores, and an optical transmission system using the fiber are disclosed. The multi-core holey fiber comprises a plurality of cores arranged separately from each other, and a cladding surrounding the plurality of cores wherein the cladding has plurality of holes arranged in a triangular lattice shape to create hole layers around the plurality of cores. Additionally, d/Λ is not more than 0.5, where Λ [μm] is lattice constant of the triangular lattice, d [μm] is diameter of each of the holes; a distance between adjacent cores is equivalent to not less than six hole layers; the cores arranged farthest from the center of the multi-core holey fiber is surrounded by not less three hole layers; and the sum of the coupling coefficients between the adjacent cores is not more than 1.6×10−5/m.
摘要翻译：公开了一种抑制多个核心中的发送光信号之间的串扰劣化的多核多孔光纤，以及使用该光纤的光传输系统。多芯多孔纤维包括彼此分开布置的多个芯和围绕多个芯的包层，其中所述包层具有以三角形晶格形状布置的多个孔，以在多个芯周围产生孔层。另外，d /Λ不大于0.5，其中Λ[μm]是三角形晶格的晶格常数，d [μm]是每个孔的直径; 相邻芯之间的距离相当于不小于6个孔层; 距多芯多孔纤维中心最远的芯被不少于三个孔层包围; 相邻核心之间的耦合系数之和不大于1.6×10-5 / m。

9. 发明申请

US20080273850A1 OPTICAL FIBER AND OPTICAL-FIBER TRANSMISSION LINE 有权
标题翻译：光纤和光纤传输线
公开(公告)号：US20080273850A1
公开(公告)日：2008-11-06
申请号：US12133782
申请日：2008-06-05
申请人： Katsunori IMAMURA
发明人： Katsunori IMAMURA
IPC分类号： G02B6/036
CPC分类号： G02B6/02009 , G02B6/02019 , G02B6/02242 , G02B6/0288 , G02B6/03644
摘要： An optical fiber that transmits a signal light in a fundamental propagation mode has a cutoff wavelength longer than a wavelength of the signal light, a wavelength dispersion of the fundamental propagation mode of −5 ps/nm/km to −1 ps/nm/km at a wavelength of 1550 nanometers, an effective core area of the fundamental propagation mode larger than 45 μm2 at the wavelength of 1550 nanometers, and a dispersion slope of the fundamental propagation mode smaller than 0.03 ps/nm2/km at the wavelength of 1550 nanometers.
摘要翻译：以基本传播模式传输信号光的光纤具有比信号光波长长的截止波长，基本传播模式的波长色散为-5ps / nm / km至-1ps / nm / km 在1550纳米的波长下，基波传播模式的有效核心区域在1550纳米的波长处大于45μm，并且基本传播模式的色散斜率小于0.03ps / nm 在1550纳米的波长范围内^{2 / km。}

10. 发明授权

US08457462B2 Multi-core optical fiber 有权
标题翻译：多芯光纤
公开(公告)号：US08457462B2
公开(公告)日：2013-06-04
申请号：US12843302
申请日：2010-07-26
申请人： Katsunori Imamura
发明人： Katsunori Imamura
IPC分类号： G02B6/02 , G02B6/036
CPC分类号： G02B6/02338 , G02B6/02 , G02B6/02019 , G02B6/02042 , G02B6/02333 , G02B6/02347
摘要： A multi-core optical fiber includes: a plurality of core portions; and a cladding portion positioned around the plurality of core portions and including, in a cross section of the cladding portion, a flat portion in at least a part of an outer periphery of the cladding portion and a remaining portion of the outer periphery that is circular, the cross section being perpendicular to a longitudinal direction of the cladding portion.
摘要翻译：多芯光纤包括：多个芯部; 以及包围部，其围绕所述多个芯部设置，并且在所述包层部的截面中包括在所述包层部的外周的至少一部分中的平坦部，所述外周的剩余部为圆形横截面垂直于包层部分的纵向方向。

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