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1. 发明公开

EP2944989A1 OPTICAL COMPONENT AND OPTICAL COMMUNICATION SYSTEM 审中-公开
标题翻译： OPTISCHE KOMPONENTE UND OPTISCHES KOMMUNIKATIONSSYSTEM
公开(公告)号：EP2944989A1
公开(公告)日：2015-11-18
申请号：EP14738268.3
申请日：2014-01-10
申请人： Sumitomo Electric Industries, Ltd.
发明人： SASAOKA Eisuke , HAYASHI Tetsuya , SHIMAKAWA Osamu
IPC分类号： G02B6/04 , G02B6/02 , G02B6/38 , G02B6/44
CPC分类号： G02B6/02042 , G02B6/3885 , G02B6/4403
摘要： An optical component according to an embodiment of the present invention is constructed of a plurality of MCFs each having the same core constellation structure and among the plurality of MCFs, a maximum deviation of a core pitch between neighboring cores and a maximum deviation of a spot size of a fundamental mode at an operating wavelength satisfy a specific relation, thereby suppressing structural variation so as to keep a splice loss not more than 1 dB.
摘要翻译：根据本发明的实施例的光学部件由多个MCF构成，每个MCF具有相同的核心星座结构，并且在多个MCF中，相邻芯之间的芯间距的最大偏差和光点尺寸的最大偏差在工作波长下的基本模式满足特定关系，从而抑制结构变化，从而保持接合损耗不超过1dB。

2. 发明公开

EP2284514A1 BEAM PATH MONITORING DEVICE, AND BEAM PATH MONITORING SYSTEM 有权
标题翻译：用于监控光路和监测系统的光路
公开(公告)号：EP2284514A1
公开(公告)日：2011-02-16
申请号：EP09758230.8
申请日：2009-05-25
申请人： Sumitomo Electric Industries, Ltd.
发明人： HASEGAWA Takemi , HAYASHI Tetsuya , NAKAJI Haruo
IPC分类号： G01M11/00
CPC分类号： G01M11/3136 , G01M11/3145
摘要： An optical line monitoring apparatus and optical line monitoring system which can measure a reflectance distribution in an optical line with a high spatial resolution in a short time are provided. An optical line monitoring apparatus 14A provided in a station 10A comprises an OCDR measurement section 15 for carrying out OCDR measurement, an OTDR measurement section 16 for carrying out OTDR measurement, an optical switch 13 for selectively connecting one of the OCDR measurement section 15 and OTDR measurement section 16 to the optical coupler 12, a control section 17, and a storage device 18. The control section 17 performs a predetermined arithmetic operation according to an OCDR measurement result acquired by causing the OCDR measurement section 15 to carry out the OCDR measurement and an OTDR measurement result acquired by causing the OTDR measurement section 16 to carry out the OTDR measurement.
摘要翻译：本发明提供一种光线路监视装置和光线路监视系统，其可以在与在短时间内高空间分辨率的光学线测量的反射率分布。在站OCDR测定部15的10A包括用于执行OCDR测定到OTDR测定部16用于执行OTDR测量到光开关13，用于选择性地将OCDR测定部15及OTDR的一个中提供的光线路监视装置14A 测量部16与光学耦合器12，一个控制部17，以及存储装置18。控制部17在通过使OCDR测定部15进行OCDR测定及取得OCDR测定结果执行预定的算术运算雅丁到到通过使OTDR测定部16进行OTDR测定取得OTDR测定结果。

3. 发明公开

EP4220995A1 MULTICORE OPTICAL FIBER AND OPTICAL TRANSMISSION SYSTEM 审中-实审
公开(公告)号：EP4220995A1
公开(公告)日：2023-08-02
申请号：EP21872564.6
申请日：2021-09-24
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： SUGANUMA Takahiro , HASEGAWA Takemi , HAYASHI Tetsuya , SAKUMA Hirotaka
IPC分类号： H04B10/25 , G02B6/02
摘要： A multi-core optical fiber includes: a pair of cores; and a cladding that covers both of the pair of cores. A diameter of the cladding is 124 µm or more and 126 m or less. A distance between centers of the pair of cores is 46.5 µm or less. Cross talk between counter-propagating cores at a wavelength of 1550 nm is -30 dB/100km or less.

4. 发明公开

EP3779543A1 MULTICORE OPTICAL FIBER AND MULTICORE OPTICAL FIBER CABLE 审中-公开
公开(公告)号：EP3779543A1
公开(公告)日：2021-02-17
申请号：EP19786054.7
申请日：2019-02-27
申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.
发明人： HAYASHI Tetsuya
IPC分类号： G02B6/44 , G02B6/02
摘要： An MCF cable according to an embodiment contains a plurality of MCFs each including at least one coupled core group and a common cladding. A is set such that κ at a wavelength of 1550 nm is falls within a range of from 1×10 -1 [m -1 ] to 1×10 3 [m -1 ], and (βΛC avg )/(2κ) or (βΛC f )/(2κ) is set in a specific range in a wavelength band of from 1530 nm to 1625 nm, where C avg [m -1 ], C f [m -1 ], and f twist [turn/m] represent the average curvature, the pseudo-curvature, and the average torsion, respectively, for each MCF, and κ [m -1 ], β [m -1 ], and A [m] represent the coefficient of mode coupling between adjacent cores, the average of propagation constants, and the core center-to-center distance, respectively.

5. 发明授权

EP3361296B1 MULTICORE OPTICAL FIBER, MULTICORE OPTICAL FIBER CABLE, AND OPTICAL FIBER TRANSMISSION SYSTEM 有权
公开(公告)号：EP3361296B1
公开(公告)日：2020-11-18
申请号：EP16853338.8
申请日：2016-08-25
申请人： Sumitomo Electric Industries, Ltd.
发明人： HAYASHI Tetsuya
IPC分类号： G02B6/02 , H04B10/25 , H04J14/00

6. 发明公开

EP3425367A1 MODE-DEPENDENT LOSS MEASUREMENT METHOD AND MEASUREMENT DEVICE 审中-公开
公开(公告)号：EP3425367A1
公开(公告)日：2019-01-09
申请号：EP16892744.0
申请日：2016-12-21
申请人： Sumitomo Electric Industries, Ltd.
发明人： HAYASHI Tetsuya
IPC分类号： G01M11/02 , G02B6/02
摘要： A present embodiment relates to a MDL measurement method and the like including a structure for enabling MDL measurement without increasing a processing load. The present embodiment sequentially executes, for N (≥ 2) spatial modes, light-input operation of inputting light of a predetermined intensity to an arbitrary spatial mode, and intensity measurement operation of measuring an output light intensity of each of the N spatial modes including the arbitrary spatial mode, to generate a transfer matrix relating to transmission loss in an optical fiber as a measurement target, and determine at least a linear value of MDL per unit fiber length by using each component value of the generated transfer matrix.

7. 发明授权

EP2797244B1 OPTICAL TRANSMISSION SYSTEM 有权
公开(公告)号：EP2797244B1
公开(公告)日：2018-06-27
申请号：EP12860208.3
申请日：2012-12-17
申请人： Sumitomo Electric Industries, Ltd.
发明人： HAYASHI Tetsuya
IPC分类号： H04B10/516 , H04B10/2581 , H04J14/00 , H04J14/04 , H04J14/06 , H04L27/00
CPC分类号： H04J14/00 , H04B10/2581 , H04B10/516 , H04J14/04
摘要： The present invention relates to an optical transmission system to which a spatial multiplexing optical fiber is applied as a transmission line. The optical transmission system performs optical transmission using the spatial multiplexing optical fiber as an optical transmission line for transmission of signal light. Namely, the optical transmission is carried out in accordance with a modulation format in which a Q-factor of the signal which propagates in only certain propagation mode of the spatial multiplexing optical fiber and a ratio of a signal light power to a square of the shortest distance between modulation symbols in the modulation format satisfy a predetermined relational expression.

8. 发明公开

EP2797244A1 OPTICAL TRANSMISSION SYSTEM 有权
标题翻译： OPTISCHESÜBERTRAGUNGSSYSTEM
公开(公告)号：EP2797244A1
公开(公告)日：2014-10-29
申请号：EP12860208.3
申请日：2012-12-17
申请人： Sumitomo Electric Industries, Ltd.
发明人： HAYASHI Tetsuya
IPC分类号： H04B10/516 , H04B10/2581 , H04J14/00 , H04J14/04 , H04J14/06 , H04L27/00
CPC分类号： H04J14/00 , H04B10/2581 , H04B10/516 , H04J14/04
摘要： The present invention relates to an optical transmission system to which a spatial multiplexing optical fiber is applied as a transmission line. The optical transmission system performs optical transmission using the spatial multiplexing optical fiber as an optical transmission line for transmission of signal light. Namely, the optical transmission is carried out in accordance with a modulation format in which a Q-factor of the signal which propagates in only certain propagation mode of the spatial multiplexing optical fiber and a ratio of a signal light power to a square of the shortest distance between modulation symbols in the modulation format satisfy a predetermined relational expression.
摘要翻译：本发明涉及作为传输线应用空间复用光纤的光传输系统。光传输系统使用空间复用光纤作为用于信号光传输的光传输线进行光传输。也就是说，光传输是按照调制格式进行的，其中仅在空间复用光纤的一定传播模式下传播的信号的Q因子和信号光功率与最短的平方的比率调制格式的调制符号之间的距离满足预定的关系式。

9. 发明公开

EP2613185A1 MULTICORE OPTICAL FIBER 有权
标题翻译： MEHRKERN-GLASFASER
公开(公告)号：EP2613185A1
公开(公告)日：2013-07-10
申请号：EP11821737.1
申请日：2011-08-29
申请人： Sumitomo Electric Industries, Ltd.
发明人： HAYASHI Tetsuya
IPC分类号： G02B6/04 , G02B6/036
摘要： The present invention relates to a multicore optical fiber having a structure for suppressing core-to-core crosstalk. The multicore optical fiber (100A) comprises a plurality of cores extending along a predetermined axis while being arranged like a hexagonal lattice on a cross section perpendicular to the axis and a cladding region (120) integrally surrounding the plurality of cores. All of core portions, each constituting at least a part of the associated one of the plurality of cores, have substantially the same structure.
摘要翻译：本发明涉及具有抑制核心到核心串扰的结构的多芯光纤。多芯光纤（100A）包括沿着预定轴线延伸的多个芯，同时在垂直于该轴线的横截面上排列成六边形格子，以及整体围绕多个芯体的包层区域（120）。所有的核心部分，每个构成多个核心中相关联的一个核心的至少一部分具有基本上相同的结构。

10. 发明公开

EP3623789A1 NONLINEARITY MEASURING METHOD AND NONLINEARITY MEASURING DEVICE 有权
公开(公告)号：EP3623789A1
公开(公告)日：2020-03-18
申请号：EP18798419.0
申请日：2018-05-11
申请人： Sumitomo Electric Industries, Ltd.
发明人： HASEGAWA Takemi , HAYASHI Tetsuya
IPC分类号： G01M11/02
摘要： The present invention relates to a method and device for measuring optical nonlinearity of an optical fiber to be measured comprising a plurality of cores having mutually coupled waveguide modes. The method includes at least a preparing step of arranging a laser light source configured to emit laser light and a detecting unit configured to determine an optical intensity, a light launching step of inputting laser light into a specific core of the optical fiber to be measured, a light detecting step of determining the intensity of a specific wavelength component caused by optical nonlinearity among the reflective light components from the optical fiber to be measured, and an analyzing step of determining optical nonlinearity of the optical fiber to be measured on the basis of the intensity of the specific wavelength component.

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