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1.发明公开PHOTONIC BANDGAP FIBER AND FIBER LASER DEVICE USING SAME 有权PHOTONENBANDLÜCKENFASERUND FASERLASERVORRICHTUNG DAMIT
公开(公告)号：EP2975704A4
公开(公告)日：2017-06-28
申请号：EP14762525
申请日：2014-01-31
IPC分类号： H01S3/067 , G02B6/02 , H01S3/094 , H01S3/0941
CPC分类号： H01S3/06741 , G02B6/02309 , G02B6/02323 , G02B6/02347 , H01S3/0675 , H01S3/094003 , H01S3/09408 , H01S3/0941
摘要： There is provided a photonic bandgap fiber used in a state in which at least a part of the photonic bandgap fiber is bent at radii of 15 cm or greater and 25 cm or less. A large number of high refractive index portions 57 are disposed in a nineteen-cell core type in three layers, and a V value is 1.5 or greater and 1.63 or less. In the high refractive index portions 57, conditions are defined that a relative refractive index difference is ”% and a lattice constant is A µm so as to remove light in a higher mode at the bent portion as described above.
摘要翻译： 提供了一种光子带隙光纤，该光子带隙光纤用于至少一部分光子带隙光纤以15厘米或更大和25厘米或更小的半径弯曲的状态。 大量的高折射率部分57以三层的19单元芯型配置，V值为1.5以上且1.63以下。 在高折射率部分57中，将如上所述的条件定义为相对折射率差为“％”且晶格常数为Aμm，以在弯曲部分以较高模式去除光。
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公开(公告)号：EP3035091A4
公开(公告)日：2017-04-05
申请号：EP15754524
申请日：2015-02-25
CPC分类号： G02B6/02042 , G02B6/0288 , G02B6/14 , G02B6/268 , G02B6/287 , G02B2006/2839
摘要： A multicore fiber 1 includes: a first core 11 that propagates light of up to an x-th order LP mode (here, x is an integer of "2" or more); and a second core 12 that propagates light of up to a y-th order LP mode (here, y is an integer of "1" or more), and a small diameter portion 33 in which a propagation constant of light of an x 1 -th order LP mode of the first core 11 (here, x 1 is an integer of "2" or more and x or less) and a propagation constant of light of a y1-th order LP mode of the second core 12 (here, y 1 is an integer of "1" or more and y or less other than x 1 ) coincide with each other and a large diameter portion in which a propagation constant of light of each LP mode of the first core 11 and a propagation constant of light of each LP mode of the second core 12 are configured not to coincide with each other are arranged.
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公开(公告)号：EP3029498A4
公开(公告)日：2017-03-29
申请号：EP15759007
申请日：2015-02-27
CPC分类号： G02B6/02042 , G02B6/02219 , G02B6/028 , G02B6/0288 , G02B6/036
摘要： In a C band and an L band, a multi-core fiber 1 includes: nine or more core elements 10 and 20 respectively including cores 11 and 21 that propagate light of at least up to a second-order LP mode, inner cladding layers 12 and 22, and trench layers 13 and 23; and an outer cladding 30. The effective refractive indices of light propagating through the cores 11 and 21 adjacent to each other are different from each other such that a magnitude of crosstalk of light of a highest-order LP mode commonly propagating through the cores 11 and 21 adjacent to each other between the cores 11 and 21 adjacent to each other becomes a peak at a bending diameter smaller than a diameter of 100 mm, and the core has a higher refractive index in a center portion than in an outer circumferential portion such that a differential mode group delay of the cores 11 and 12 is 700 picoseconds/km or less.
摘要翻译： 在C波段和L波段中，多芯光纤1包括：九个或更多个芯元件10和20，其分别包括至少高达二阶LP模的光的芯11和21，内包层12 和22，以及沟槽层13和23; 和外包层30.通过彼此相邻的芯11和21传播的光的有效折射率彼此不同，使得最高阶LP模式的光的串扰的大小通常通过芯11和 21彼此相邻的纤芯11和21之间的直径比直径小于100mm的弯曲直径处的峰值，并且芯部在中心部分具有比外周部分更高的折射率，使得 芯11和12的差模组群延迟为700皮秒/ km或更小。
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公开(公告)号：EP2963465A4
公开(公告)日：2016-11-02
申请号：EP14757761
申请日：2014-02-27
CPC分类号： G02B6/02042 , G02B6/03605
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公开(公告)号：EP2806297A4
公开(公告)日：2015-06-17
申请号：EP12866305
申请日：2012-12-13
CPC分类号： G02B6/02042 , G02B6/036 , G02B6/0365
摘要： There is provided a multi-core fiber that can suppress the crosstalk between cores adjacent to each other even in the case where the multi-core fiber is nonlinearly disposed while suppressing splicing losses. A multi-core fiber (1) includes an even number of six or more of cores and a clad (20) that surrounds the outer circumferential surfaces of the cores. The cores are formed of two types of cores (11) and (12) in which an effective refractive index difference in a fundamental mode is 0.002 or less in a predetermined range or more that the effective refractive index difference in the fundamental mode is varied according to a core pitch. Two types of the cores (11) and (12) are alternately and annularly disposed at regular spacings. A difference in the mode field diameter of light propagating through the cores (11) and (12) is 1 µm or less.
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6.发明公开SOLID PHOTONIC BAND GAP FIBER, AND FIBER MODULE, FIBER AMP, AND FIBER LASER EMPLOYING SOLID PHOTONIC BAND GAP FIBER 有权实心纤维光子带隙光纤模块纤维加固和光纤激光器实心纤维光子带隙
公开(公告)号：EP2624025A4
公开(公告)日：2015-05-27
申请号：EP11829156
申请日：2011-09-28
CPC分类号： G02B6/02009 , G02B6/02347 , G02B6/0281 , H01S3/06741
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公开(公告)号：EP2388871A4
公开(公告)日：2018-01-24
申请号：EP10789176
申请日：2010-06-04
CPC分类号： G02B6/03638 , G02B6/02033 , G02B6/14 , H01S3/06704 , H01S3/06733
摘要： The multi-cladding optical fiber of the present invention is provided with a core with an average refractive index n1 that guides a signal light and a cladding composed of an inner cladding with an average refractive index n2 that is formed on the periphery of the core, an intermediate cladding with an average refractive index n3 that is formed on the periphery of the inner cladding, and an outer cladding with an average refractive index n4 that is formed on the periphery of the intermediate cladding to confine an excitation light to the inner side of the intermediate cladding, characterized by the refractive indices n1 to n4 satisfying the relationship of n1 > n2 > n3 > n4; there being two or more axisymmetric modes in the core at a wavelength of the signal light; the two or more axisymmetric modes being composed of a fundamental mode and at least a high-order mode that is an axisymmetric mode of a higher order than the fundamental mode; and when bent at a predetermined bending diameter, the high-order mode in the core disperses within the inner cladding due to coupling with an inner cladding mode, so that only the fundamental mode substantially propagates through the core.
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公开(公告)号：EP3171205A4
公开(公告)日：2018-03-21
申请号：EP16749293
申请日：2016-02-10
IPC分类号： G02B6/02
CPC分类号： G02B6/02042 , G02B6/02014
摘要： The effective refractive indexes of core elements 10a to 10c are different from each other, and the effective refractive indexes of the core elements 10a to 10c and the effective refractive index of a second core 21 are different from each other. No core is disposed at the lattice point of a triangular lattice of a first layer LY1. First cores 11a and 11b of the core elements 10a and 10b are disposed at the lattice points of a second layer LY2. A first core 11c of the core element 10c and the second core 21 are alternately disposed at the lattice points of a third layer LY3. In a fourth layer LY4, no core is disposed at six lattice points, and the first cores 11a and 11b of the core elements 10a and 10b are disposed at the other lattice points. The second cores 21 are adjacent to the lattice points of the fourth layer LY4, at which no core is disposed. The effective refractive indexes of the core elements adjacent to each other are different from each other.
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公开(公告)号：EP2806296A4
公开(公告)日：2015-06-17
申请号：EP12865553
申请日：2012-12-13
CPC分类号： G02B6/02042 , G02B6/0286 , G02B6/03622 , G02B6/0365
摘要： There is provided a multi-core fiber that can dispose a large number of cores according to the outer diameter of a clad while suppressing the crosstalk between cores adjacent to each other. A multi-core fiber (1) includes six or more of core elements (10) having a core (11) a first clad (12) surrounding the outer circumferential surface of the core (11) and a second clad (13) surrounding the outer circumferential surface of the first clad (12), and includes a clad (20) surrounding the core elements (10). All of expressions are satisfied: n 1 > n 2 > n 3 n 1 > n 4 n 3
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