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公开(公告)号：US10215913B2
公开(公告)日：2019-02-26
申请号：US15422786
申请日：2017-02-02
摘要： A multicore fiber includes: a first core configured to propagate an LP01 mode, an LP11 mode, and an LP21 mode light beam; and a second core configured to propagate an LP01 mode light beam, wherein a different mode interaction section is provided in which a propagation constant of the LP21 mode light beam propagated through the first core is matched with a propagation constant of the LP01 mode light beam propagated through the second core, a different mode non-interaction section is provided in which propagation constants of the LP mode light beams propagated through the first core are not matched with propagation constants of the LP mode light beams propagated through the second core, and the first core includes an inner core and an outer core surrounding the inner core with no gap and having a refractive index higher than a refractive index of the inner core.
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公开(公告)号：US09817294B2
公开(公告)日：2017-11-14
申请号：US14748895
申请日：2015-06-24
申请人： FUJIKURA LTD.
发明人： Kazuhiro Goi , Hiroki Ishihara , Kensuke Ogawa , Kenji Oda , Hiroyuki Kusaka , Ryokichi Matsumoto , Hitoshi Uemura
CPC分类号： G02F1/2257 , G02B6/122 , G02B6/1228 , G02B6/125 , G02B6/29353 , G02B6/29355 , G02B2006/12097 , G02B2006/12142 , G02B2006/12147 , G02B2006/12159 , G02F1/025 , G02F1/218 , G02F1/2255 , G02F2001/212 , G02F2201/58
摘要： An optical modulation device configured of a planar optical waveguide, includes: a light incidence unit which allows light to be incident on the planar optical waveguide; a Mach-Zehnder interferometer which includes a first optical splitter section branching the light incident on the light incidence unit, two arm portions guiding the light branched by the first optical splitter section, a phase modulation unit linearly disposed on each of the two arm portions, and a first optical coupler section combining the light guided from the two arm portions; a light launching unit which launches the light combined by the first optical coupler section from the planar optical waveguide; and a traveling-wave electrode which includes an input unit and an output unit, and applies a voltage to the phase modulation unit.
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公开(公告)号：US20190033512A1
公开(公告)日：2019-01-31
申请号：US16070886
申请日：2016-02-25
申请人： Fujikura Ltd.
发明人： Hitoshi Uemura , Katsuhiro Takenaga
摘要： An optical device includes a plurality of cores and a clad that surrounds outer circumferential surfaces of the cores and has a lower refractive index than the cores. Each of the cores has a large diameter portion, a tapered portion, and a reduced diameter portion formed along a longitudinal direction and has a refractive index gradually increasing from outer circumference to a center. In each of the cores, a radial-direction distance r (μm) from the center, a refractive index n(r) at the distance r, a relative refractive index difference Δ[%] of the center with respect to the clad, a radius r0 [μm], and a constant α satisfy predetermined formulas and a wavelength λ [nm] of light propagating through the cores and a diameter R of each core before the diameter reduction with respect to a diameter of each core after the diameter reduction satisfy predetermined formulas.
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公开(公告)号：US20150234120A1
公开(公告)日：2015-08-20
申请号：US14618147
申请日：2015-02-10
CPC分类号： G02B6/02042 , G02B6/028 , G02B6/0286 , G02B6/0288 , G02B6/03611
摘要： An optical device includes: multiple cores each including an inner core and an outer core surrounding an outer circumferential surface of the inner core without any gap therebetween; and cladding surrounding an outer circumferential surface of the cores without any gap therebetween and having a refractive index lower than that of the outer core, wherein each of the cores has a tapered portion that is tapered from one side toward the other side thereof in a longitudinal direction, each of the inner cores includes a low-refractive-index portion, and a high-refractive-index portion surrounding an outer circumferential surface of the low-refractive-index portion without any gap therebetween and having a refractive index higher than that of the low-refractive-index portion, and the outer core has a refractive index lower than that of the high-refractive-index portion.
摘要翻译： 光学装置包括：多个芯，每个芯包括内芯和围绕内芯的外周表面的外芯，其间没有任何间隙; 并且围绕芯的外周表面的包层，在其之间没有任何间隙，并且折射率低于外芯的折射率，其中每个芯具有从纵向方向的一侧朝向另一侧渐缩的锥形部分 每个内芯包括低折射率部分和围绕低折射率部分的外周表面的高折射率部分，其间没有任何间隙，并且折射率高于 低折射率部分和外芯的折射率低于高折射率部分的折射率。
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公开(公告)号：US20170248754A1
公开(公告)日：2017-08-31
申请号：US15424087
申请日：2017-02-03
IPC分类号： G02B6/02
CPC分类号： G02B6/02 , G02B6/02023 , G02B6/02042
摘要： A multicore fiber includes: a center core that propagates four LP mode light beams including an LP02 mode light beam; and a first to a fifth cores disposed on a first line to a fifth line segments extend from the center of the center core in the radial direction at predetermined angles. The multicore fiber includes a different mode interaction section in which the propagation constants of each mode light beam propagated through the center core are matched with the propagation constants of LP01 mode light beams propagated through the first to fifth cores.
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公开(公告)号：US20160245992A1
公开(公告)日：2016-08-25
申请号：US15045645
申请日：2016-02-17
CPC分类号： G02B6/02042 , G02B6/02019 , G02B6/02376 , G02B6/03644 , G02B6/262 , G02B6/368 , G02B6/3885
摘要： 0.5377×r2−7.7≦V2/V1≦0.5377×r2−5.7, 3≦r2/r1≦5 are satisfied, where a radius of the inner core before tapered in diameter is defined as r1, a radius of the outer core before tapered in diameter is defined as r2, a refractive index volume formed of a product of a cross sectional area of the inner core and a relative refractive index difference of the inner core to the cladding before tapered in diameter is defined as V1, and a refractive index volume formed of a product of a cross sectional area of the outer core and a relative refractive index difference of the outer core to the cladding before tapered in diameter is defined as V2.
摘要翻译： 0.5377×r2-7.7≤V2/V1≤0.5377×r2-5.7,3≤r2/r1≤5，其中，将锥形直径之前的内芯的半径定义为r1，外芯的半径在锥形之前 直径定义为r2，由内芯横截面积和内芯与包层的直径相对折射率差的乘积形成的折射率体积定义为V1，折射率 由外径的横截面积和外芯与包层之间的直径相对折射率差的乘积形成的体积定义为V2。
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公开(公告)号：US20160187577A1
公开(公告)日：2016-06-30
申请号：US15062582
申请日：2016-03-07
CPC分类号： G02B6/02042 , G02B6/0288 , G02B6/14 , G02B6/268 , G02B6/287 , G02B2006/2839
摘要： A multicore fiber 1 includes: a small diameter portion 33 in which a propagation constant of light of an x1-th order LP mode of the first core 11 (here, x1 is an integer of “2” or more and x or less, x is an integer of “2” or more) and a propagation constant of light of a y1-th order LP mode of the second core 12 (here, y1 is an integer of “1” or more and y or less other than x1, y is an integer of “1” or more) 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.
摘要翻译： 多芯光纤1包括：小直径部33，其中第一芯11的x1阶LP模的光的传播常数（这里，x1是“2”以上的整数，x以下的x，x 是“2”以上的整数），第2芯12的y1级LP模式的光的传播常数（这里，y1为除x1以外的y以下的整数，y为1以上的整数， y是“1”以上的整数）彼此一致，并且大直径部分，其中第一芯11的每个LP模式的光的传播常数和第二芯的每个LP模式的光的传播常数 12被配置为不相互重合。
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公开(公告)号：US09709729B2
公开(公告)日：2017-07-18
申请号：US15062582
申请日：2016-03-07
CPC分类号： G02B6/02042 , G02B6/0288 , G02B6/14 , G02B6/268 , G02B6/287 , G02B2006/2839
摘要： A multicore fiber 1 includes: a small diameter portion 33 in which a propagation constant of light of an x1-th order LP mode of the first core 11 (here, x1 is an integer of “2” or more and x or less, x is an integer of “2” or more) and a propagation constant of light of a y1-th order LP mode of the second core 12 (here, y1 is an integer of “1” or more and y or less other than x1, y is an integer of “1” or more) 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：US09435943B1
公开(公告)日：2016-09-06
申请号：US15045645
申请日：2016-02-17
CPC分类号： G02B6/02042 , G02B6/02019 , G02B6/02376 , G02B6/03644 , G02B6/262 , G02B6/368 , G02B6/3885
摘要： 0.5377×r2−7.7≦V2/V1≦0.5377×r2−5.7, 3≦r2/r1≦5 are satisfied, where a radius of the inner core before tapered in diameter is defined as r1, a radius of the outer core before tapered in diameter is defined as r2, a refractive index volume formed of a product of a cross sectional area of the inner core and a relative refractive index difference of the inner core to the cladding before tapered in diameter is defined as V1, and a refractive index volume formed of a product of a cross sectional area of the outer core and a relative refractive index difference of the outer core to the cladding before tapered in diameter is defined as V2.
摘要翻译： 0.5377×r2-7.7≤V2/V1≤0.5377×r2-5.7,3≤r2/r1≤5，其中，将锥形直径之前的内芯的半径定义为r1，外芯的半径在锥形之前 直径定义为r2，由内芯横截面积和内芯与包层的直径相对折射率差的乘积形成的折射率体积定义为V1，折射率 由外径的横截面积和外芯与包层之间的直径相对折射率差的乘积形成的体积定义为V2。
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公开(公告)号：US09069116B2
公开(公告)日：2015-06-30
申请号：US14304270
申请日：2014-06-13
IPC分类号： G02B6/02
CPC分类号： G02B6/02004 , G02B6/02042 , G02B6/4471
摘要： A fan-in/fan-out device includes a plurality of single-core fibers which are connected to a plurality of first cores of a multicore fiber and which include an elongated portion extending in a longitudinal direction so as to reduce a diameter and being connected to a first end portion of the multicore fiber at a second end portion in an extending direction of the elongated portion, where a refractive index distribution of each of the single-core fibers has a single peak, a relative refractive index difference of a second core with respect to a second cladding in each of the single-core fibers is 0.8% or more; and a second mode field diameter of the second end portion of the elongated portion is greater than a first mode field diameter of the first end portion of the multicore fiber.
摘要翻译： 风扇/扇出装置包括多个单芯光纤，其连接到多芯光纤的多个第一芯，并且包括沿纵向方向延伸的细长部分，以减小直径并连接 在所述细长部分的延伸方向上的第二端部处的所述多芯纤维的第一端部，其中每个所述单芯纤维的折射率分布具有单个峰，所述第二芯的相对折射率差 相对于每个单芯纤维中的第二包层为0.8％以上; 并且所述细长部分的第二端部的第二模场直径大于所述多芯光纤的第一端部的第一模场直径。
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