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31. 发明授权

US08554038B2 Manufacturing method of photonic band gap fiber and photonic band gap fiber 失效
标题翻译：光子带隙光纤和光子带隙光纤的制造方法
公开(公告)号：US08554038B2
公开(公告)日：2013-10-08
申请号：US12980857
申请日：2010-12-29
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/02
CPC分类号： G02B6/00 , G02B6/032
摘要： A manufacturing method of a photonic band gap fiber which includes measuring a hole diameter d0 and a distance-between-holes Λ0 in a preliminary experiment capillary body by first drawing a preliminary experiment preform, calculating a confinement loss to a normalized wavelength λ/Λ being a wavelength λ normalized by an optional distance-between-holes Λ using a ratio d0/Λ0 and the optional distance-between-holes Λ as design parameters, setting a distance-between-holes by calculating the set distance-between-holes Λ1 to a desired transmission wavelength λ1 of a photonic band gap fiber to be manufactured using a value of the normalized wavelength λ/Λ in which the confinement loss becomes about a minimum value, and second drawing a preform for a photonic band gap fiber by using the same members as those of the preliminary experiment preform and by setting a distance-between-holes to the set distance-between-holes Λ1, in a drawing temperature condition used for the first drawing.
摘要翻译：一种光子带隙光纤的制造方法，其包括通过首先绘制初步实验预制棒来测量初步实验毛细管体中的孔直径d0和孔间距离λ0，计算归一化波长λ/λ的约束损耗为通过使用比率d0 /λ0和可选的孔之间的距离Lambda作为设计参数通过可选的孔之间的距离Lambda归一化的波长λ，通过计算设定的孔之间的距离来设定孔之间的距离Lambda1到使用其中限制损耗变为约最小值的归一化波长λ/λ的值制造的光子带隙光纤的期望透射波长λ1，以及通过使用相同的方法来绘制光子带隙光纤的预制件构件作为初步实验预制件的构件，并且通过在图中将孔之间的距离设置为孔之间的设定距离Lambda1 温度条件用于第一幅图。

32. 发明授权

US07693380B2 Optical transmission line and optical transmission system 失效
标题翻译：光传输线路和光传输系统
公开(公告)号：US07693380B2
公开(公告)日：2010-04-06
申请号：US12361281
申请日：2009-01-28
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/032
CPC分类号： G02B6/02347 , G02B6/29377 , H04B10/25253
摘要： An optical transmission line includes a first optical fiber and a second optical fiber connected to the first optical fiber. The first optical fiber includes a core region formed at a center of the fiber and a cladding region formed around the core region. The cladding region includes air holes formed in a triangular lattice around the core region. The first optical fiber has a negative wavelength dispersion and a dispersion per slope of −200 nm to −50 nm at a wavelength of 1050 nm. The second optical fiber has a positive wavelength dispersion and the dispersion per slope of −800 nm to −50 nm at the wavelength of 1050 nm.
摘要翻译：光传输线包括连接到第一光纤的第一光纤和第二光纤。第一光纤包括形成在纤维的中心的芯区域和形成在芯区域周围的包层区域。包层区域包括围绕芯区域形成为三角形格子的气孔。第一光纤在1050nm波长处具有负波长色散和每斜率-200nm至-50nm的色散。第二光纤具有正波长色散，在波长为1050nm处的波长为-800nm至-50nm的每个斜率的色散。

33. 发明授权

US07693378B2 Holey fiber and method of manufacturing the same 失效
标题翻译：多孔纤维及其制造方法
公开(公告)号：US07693378B2
公开(公告)日：2010-04-06
申请号：US12170822
申请日：2008-07-10
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/032 , B29D11/00
CPC分类号： B29D11/00663 , C03B37/02781 , C03B2201/20 , C03B2201/31 , C03B2203/14 , C03B2203/42 , G02B6/02019 , G02B6/02333 , G02B6/02338
摘要： A holey fiber has a core region, a cladding region surrounding the core region, air holes arranged around the core region, and a connection section extending from at least one end portion of the holey fiber. A refractive index of the core region in the connection section is higher than a refractive index of the cladding region without air holes in the connection section.
摘要翻译：多孔纤维具有芯区域，围绕芯区域的包层区域，围绕芯区域布置的气孔和从有孔纤维的至少一个端部延伸的连接部分。连接部中的芯部区域的折射率高于连接部中没有气孔的包层区域的折射率。

34. 发明申请

US20090046984A1 OPTICAL TRANSMISSION SYSTEM AND DISPERSION-COMPENSATING OPTICAL FIBER 失效
标题翻译：光传输系统和分光补偿光纤
公开(公告)号：US20090046984A1
公开(公告)日：2009-02-19
申请号：US12208951
申请日：2008-09-11
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/032
CPC分类号： G02B6/02261 , G02B6/02347 , G02B6/0281 , G02B6/03644 , G02B6/29377
摘要： An optical transmission system employs an optical fiber as an optical transmission path that includes a holey fiber and a dispersion-compensating optical fiber. The holey fiber includes a core region that is formed at a center of the holey fiber and a cladding region having a plurality of holes around the core region at regular intervals. The dispersion-compensating optical fiber is connected close to the holey fiber and that collectively compensates wavelength dispersion of the holey fiber at an operation wavelength in at least two wavelength bands out of O band, E band, S band, C band, and L band within a predetermined range depending on a transmission rate.
摘要翻译：光传输系统采用光纤作为包括多孔光纤和色散补偿光纤的光传输路径。多孔纤维包括形成在多孔纤维的中心的芯区域和具有围绕芯区域周围的规则间隔的多个孔的包层区域。色散补偿光纤靠近多孔光纤连接，并且在O波段，E波段，S波段，C波段和L波段中的至少两个波长带中的工作波长下共同补偿多孔光纤的波长色散在预定范围内，取决于传输速率。

35. 发明授权

US06591048B2 Dispersion compensating optical fiber and optical transmission line using the optical fiber 有权
标题翻译：使用光纤的色散补偿光纤和光传输线
公开(公告)号：US06591048B2
公开(公告)日：2003-07-08
申请号：US09791670
申请日：2001-02-26
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B626
CPC分类号： G02B6/02009 , G02B6/02261 , G02B6/03644
摘要： There are provided a dispersion compensating optical fiber that reduces dispersion in the 1.5 &mgr;m- and 1.3 &mgr;m-wavelength bands and an optical transmission line using the optical fiber. A first side core (2), a second side core (3), and a cladding (5) are disposed in this order on the outer side of a center core (1). The relationship among a comparative refractive index difference &Dgr;1 of the center core (1) to the cladding (5), a comparative refractive index difference &Dgr;2 of the first side core (2) to the cladding (5), and a comparative refractive index difference &Dgr;3 of the second side core (3) to the cladding (5) is set to be &Dgr;1>&Dgr;3>&Dgr;2 wherein 0.8%≦&Dgr;1≦1.3%, −0.5≦&Dgr;2/&Dgr;1≦−0.35, and 0.2%≦&Dgr;3≦0.3%, and the diameter ratio among the center core (1), the first side core (2), and the second side core (3) is set to be 1:2 through 2.5:2.5 through 3.5. The dispersion compensating optical fiber is connected to a single-mode optical fiber, and the dispersion value in the 1.5 &mgr;m-wavelength band of the connected optical fiber is set to be −1 ps/nm/km through 1 ps/nm/km, and the dispersion value in the 1.3 &mgr;m-wavelength band of the connected optical fiber is set to be −5 ps/nm/km through 5 ps/nm/km.
摘要翻译：提供了一种色散补偿光纤，其减少了1.5μm和1.3μm波长带中的色散以及使用该光纤的光传输线。第一侧芯（2），第二侧芯（3）和包层（5）依次设置在中心芯（1）的外侧。中心芯（1）与包层（5）的比较折射率差DELTA1，第一侧芯（2）与包层（5）的比较折射率差DELTA2与比较折射率差将第二侧芯（3）的DELTA3设置为包层（5），其中0.8％<= DELTA1 <= 1.3％，-0.5 <= DELTA2 /DELTA1≤0.35和0.2％ <= DELTA3 <= 0.3％，中心芯（1），第一侧芯（2）和第二侧芯（3）之间的直径比设定为1:2〜2.5:2.5〜3.5。色散补偿光纤连接到单模光纤，连接的光纤的1.5μm波长带中的色散值设定为-1ps / nm / km至1ps / nm / km，并且连接的光纤的1.3μm波长带中的色散值被设定为-5ps / nm / km至5ps / nm / km。

36. 发明授权

US06178279B1 Dispersion compensating optical fiber, and wavelength division multiplex light transmission line using the same 失效
标题翻译：色散补偿光纤和使用其的波分复用光传输线
公开(公告)号：US06178279B1
公开(公告)日：2001-01-23
申请号：US09045516
申请日：1998-03-20
申请人： Kazunori Mukasa , Yoshihisa Suzuki
发明人： Kazunori Mukasa , Yoshihisa Suzuki
IPC分类号： G02B610
CPC分类号： G02B6/02261 , G02B6/02004 , G02B6/0228 , G02B6/03627 , G02B6/03644 , H04B10/25253
摘要： The invention relates to a dispersion compensating optical fiber which is connected to a single-mode optical fiber having zero dispersion in the wavelength of 1.31 &mgr;m and has both a dispersion compensating function and a function serving as an optical transmission line, wherein the distribution of refractive indexes of dispersion compensating optical fiber is of W-type profile, the dispersion value in the wavelength of 1.55 &mgr;m is in a range from −20 ms/nm/km or more to −10 ps/nm/km or less, the ratio of dispersion slope to the dispersion value in the wavelength of 1.55 &mgr;m is set to almost the same as the absolute value of the ratio of dispersion slope with the dispersion value in the same wavelength of 1.55 &mgr;m of the single-mode optical fiber while the positive and negative codes thereof are inversed, the specific refractive index difference &Dgr;+ of center core 1 to clad 3 is in the range from 1.0% or more to 1.8% or less, the ratio R &Dgr; of the specific refractive index difference &Dgr;− of side core 2 to clad 3 with respect to the specific refractive index difference &Dgr;+ is made −0.025 or less, the ratio Ra (Ra=a/b) of center core 1 to the diameter b of the side core is in a range from 0.3 to 0.4, and the mode field diameter is 6 &mgr;m or more.
摘要翻译：本发明涉及一种色散补偿光纤，其连接到波长为1.31μm的零色散的单模光纤，并具有色散补偿功能和用作光传输线的功能，其中折射率分布色散补偿光纤的指数为W型轮廓，波长为1.55μm的色散值在-20ms / nm / km以上至-10ps / nm / km以下的范围内，将波长为1.55μm的色散斜率的色散斜率设定为与单模光纤的相同波长的1.55μm的色散斜率与色散值的比值的绝对值几乎相同，其代码反转，中心纤芯1与包层3的比折射率差DELTA +在1.0％以上至1.8％以下的范围内，比折射率的比率R DELTA不同相对于比折射率差DELTA +的侧芯2〜包层3的ΔTA为-0.025以下，中心纤芯1与侧芯的直径b的比Ra（Ra = a / b）为范围为0.3〜0.4，模场直径为6μm以上。

37. 发明授权

US6084993A Optical transmission link for division multiplex transmission, and optical fiber constituting the link 有权
标题翻译：用于波分复用传输的光传输链路和构成链路的光纤
公开(公告)号：US6084993A
公开(公告)日：2000-07-04
申请号：US150016
申请日：1998-09-09
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/028 , G02B6/036 , G02B6/34 , H04B10/2507 , H04B10/2525 , H04B10/2563 , G02B6/26
CPC分类号： G02B6/03644 , G02B6/0281 , G02B6/03627 , G02B6/29377 , H04B10/25253 , G02B6/02009 , G02B6/02242 , G02B6/02257 , G02B6/02271
摘要： The invention is to provide an optical transmission link suitable for a high speed and high bit rate wavelength division multiplex transmission. An optical transmission link 1 is composed of a non-linearity diminishing optical fiber F.sub.1, a dispersion adjusted transmission optical fiber F.sub.2, and an optical fiber F.sub.3 for diminishing and adjusting a dispersion slope. The mode field diameter of the non-linearity diminishing optical fiber F.sub.1 is made into 12 m or more. The dispersion slope is made small to be nearly zero with the mode field diameter of the dispersion adjusted transmission optical fiber F.sub.2 set to 10 m or more, and the dispersion produced at the non-linearity diminishing optical fiber F.sub.3 is adjusted to be small. At the optical fiber F.sub.3 for diminishing and adjusting a dispersion slope, the dispersion slope of the entire optical transmission link 1 is adjusted to nearly zero. The refractive index profile of the fibers F1 and F2 is made into a segment type, and the refractive index profile of the optical fiber F3 for diminishing and adjusting a dispersion slope is made W-shaped. The absolute value of dispersion at any point position in the lengthwise direction of the optical transmission link 1 is made greater than 0.5 ps/nm/km, thereby suppressing the generation of four-wavelength mixture.
摘要翻译：本发明提供一种适用于高速和高比特率波分复用传输的光传输链路。光传输链路1由非线性递减光纤F1，色散调节透射光纤F2和用于减小和调整色散斜率的光纤F3组成。非线性递减光纤F1的模场直径为12μm以上。将色散调制透射光纤F2的模场直径设定为10μm以上时，使色散斜率变得小到几乎为零，并且将在非线性递减光纤F3处产生的色散调整为较小。在用于减小和调整色散斜率的光纤F3上，整个光传输链路1的色散斜率被调节到几乎为零。将纤维F1和F2的折射率分布形成为片状，将用于减小和调节色散斜率的光纤F3的折射率分布形成为W形。在光传输连杆1的长度方向的任何点位置处的色散的绝对值大于0.5ps / nm / km，从而抑制四波长混合物的产生。

38. 发明授权

US08437594B2 Holey fiber 有权
标题翻译：多孔纤维
公开(公告)号：US08437594B2
公开(公告)日：2013-05-07
申请号：US13366408
申请日：2012-02-06
申请人： Yukihiro Tsuchida , Kazunori Mukasa
发明人： Yukihiro Tsuchida , Kazunori Mukasa
IPC分类号： G02B6/032
CPC分类号： G02B6/02347 , G02B6/02228
摘要： A holey fiber includes a core portion located at a center of the holey fiber, and a cladding portion located around the core portion, the cladding portion having holes formed in layers around the core portion. The holes are arranged so as to form a triangular lattice while d/Λ is within a range of 0.33 to 0.43, Λ is within a range of 10.5 micrometers to 15 micrometers when a hole diameter is d in micrometer and a lattice constant of the triangular lattice is Λ in micrometer, and in a wavelength of 1550 nanometer, an effective core-area is equal to or greater than 130 μm2, a bending loss in a case of bending the holey fiber at a bend diameter of 20 millimeters is equal to or less than 200 dB/m, and the holey fiber demonstrates a single-mode operation.
摘要翻译：多孔纤维包括位于多孔纤维的中心的芯部和位于芯部周围的包层部分，所述包层部分具有围绕芯部分形成的孔。这些孔被布置成形成三角形晶格，而d /λ在0.33至0.43的范围内，当孔直径为微米时，λ在10.5微米至15微米的范围内，并且三角形的晶格常数晶格是微米的λ，在1550纳米的波长下，有效核心面积等于或大于130mum2，在弯曲直径为20毫米的情况下的弯曲损耗等于或等于小于200dB / m，多孔光纤显示单模操作。

39. 发明授权

US07805040B2 Optical communication system 有权
标题翻译：光通信系统
公开(公告)号：US07805040B2
公开(公告)日：2010-09-28
申请号：US12185841
申请日：2008-08-05
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/032 , G02B6/34
CPC分类号： G02B6/03627 , G02B6/02019 , G02B6/02261 , G02B6/0228 , G02B6/02342 , G02B6/29317 , G02B6/29377 , G02B6/29394
摘要： A photonic bandgap fiber includes a core formed by a hole at its center, an outer cladding formed around the core, and an inner cladding formed between the core and the outer cladding, in which a two-dimensional Bragg grating is formed by periodically arranging a medium having a different refractive index. An optical fiber is connected to the photonic bandgap fiber, which has wavelength dispersion equal to or larger than 0 ps/nm/km and smaller than wavelength dispersion of the photonic bandgap fiber and D/S value, which is obtained by dividing the wavelength dispersion by dispersion slope, larger than D/S value of the photonic bandgap fiber.
摘要翻译：光子带隙光纤包括由其中心处的孔形成的芯，围绕芯形成的外包层和形成在芯和外包层之间的内包层，其中通过周期性地布置二维布拉格光栅形成二维布拉格光栅介质具有不同的折射率。光纤连接到光子带隙光纤，其具有等于或大于0ps / nm / km并且小于光子带隙光纤的波长色散和D / S值的波长色散，其通过将波长色散通过色散斜率大于光子带隙光纤的D / S值。

40. 发明授权

US07668428B2 Optical fiber and optical device 有权
标题翻译：光纤和光学器件
公开(公告)号：US07668428B2
公开(公告)日：2010-02-23
申请号：US12406483
申请日：2009-03-18
申请人： Ryo Miyabe , Kazunori Mukasa
发明人： Ryo Miyabe , Kazunori Mukasa
IPC分类号： G02B6/032
CPC分类号： G02B6/02214 , G02B6/02366 , G02B6/03627 , G02F2001/3528
摘要： An optical fiber includes a core region and a cladding region formed on an outer circumference of the core region. The cladding region includes a plurality of holes arranged around the core region and has a refractive index lower than a refractive index of the core region. A zero dispersion wavelength of the optical fiber is shorter than 1150 nanometers. The optical fiber propagates a light having a wavelength longer than 1000 nanometers exclusively in a fundamental mode of LP01 mode. An effective core area of the optical fiber is equal to or smaller than 12.0 μm2 at a wavelength of 1064 nanometers.
摘要翻译：光纤包括形成在芯区域的外周上的芯区域和包层区域。包层区域包括围绕芯区域布置的折射率低于芯区域的折射率的多个孔。光纤的零色散波长短于1150纳米。光纤在LP01模式的基本模式下专门传播波长长于1000纳米的光。光纤的有效核心面积在1064纳米的波长下等于或小于12.0μm2。

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