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11. 发明授权

US06519402B2 Dispersion compensating optical fiber, and dispersion compensating optical fiber module 失效
公开(公告)号：US06519402B2
公开(公告)日：2003-02-11
申请号：US09901379
申请日：2001-07-09
申请人： Kazuhiko Aikawa , Takaaki Suzuki , Kuniharu Himeno
发明人： Kazuhiko Aikawa , Takaaki Suzuki , Kuniharu Himeno
IPC分类号： G02B602
CPC分类号： G02B6/02009 , G02B6/02261 , G02B6/02266 , G02B6/0228 , G02B6/03627 , G02B6/03644
摘要： By limiting the ranges of the numerical values of a plurality of structural parameters of a dispersion compensating optical fiber which is endowed with a segmented W-shaped refractive index profile, and by suitably combining these structural parameters, it is possible to obtain a dispersion compensating optical fiber which can compensate both for chromatic dispersion and also for dispersion slope of a single mode optical fiber for transmission over a wide wavelength band which is selected from the range from 1.53 &mgr;m to 1.63 &mgr;m, and for which the value of Aeff is large, and moreover the absolute value of chromatic dispersion is large. As a result desirable transmission characteristics are obtained by being able to suppress the occurrence of nonlinearity effects, and furthermore, since the length which is required is short, the cost is low, and it is possible to produce a module which is small in size.

12. 发明申请

US20120044971A1 POLARIZATION-MAINTAINING FIBER AND OPTICAL FIBER SENSOR USING SAME 有权
标题翻译：使用相同的偏光维护光纤和光纤传感器
公开(公告)号：US20120044971A1
公开(公告)日：2012-02-23
申请号：US13112457
申请日：2011-05-20
申请人： Koji OMICHI , Yoshihiro Terada , Yutaka Endoh , Kazuyuki Hayashi , Katsuaki Izoe , Kazuhiko Aikawa , Manabu Kudoh
发明人： Koji OMICHI , Yoshihiro Terada , Yutaka Endoh , Kazuyuki Hayashi , Katsuaki Izoe , Kazuhiko Aikawa , Manabu Kudoh
IPC分类号： G01K11/32 , G02B6/02
CPC分类号： G02B6/024 , G01K11/3206 , G01L1/246
摘要： The polarization-maintaining fiber of the invention includes a core (1) made of germanium doped silica glass; a stress-applying part (3) made of boron doped silica glass; a cladding (2) made of pure silica glass; and a polyimide coating layer (4) with a thickness of 10 μm or less that surrounds the outer periphery of the cladding (2).
摘要翻译：本发明的偏振保持光纤包括由锗掺杂石英玻璃制成的芯（1）; 由硼掺杂石英玻璃制成的应力施加部分（3）由纯石英玻璃制成的包层（2）以及围绕包层（2）的外周的厚度为10μm以下的聚酰亚胺涂层（4）。

13. 发明授权

US07430353B2 Polarization-maintaining optical fiber and optical fiber gyro 有权
标题翻译：极化维护光纤和光纤陀螺
公开(公告)号：US07430353B2
公开(公告)日：2008-09-30
申请号：US11474416
申请日：2006-06-26
申请人： Kazuhiko Aikawa , Katsuaki Izoe , Kazuyuki Hayashi , Manabu Kudoh
发明人： Kazuhiko Aikawa , Katsuaki Izoe , Kazuyuki Hayashi , Manabu Kudoh
IPC分类号： G02B6/02
CPC分类号： G01C19/722 , G02B6/24
摘要： A polarization-maintaining optical fiber comprises: a core; a pair of stress-applying parts disposed one at each side of the core; and a cladding which surrounds the core and the stress-applying parts; wherein when the polarization-maintaining optical fiber is used at a wavelength of 0.81 μm to 0.87 μm, a cut-off wavelength measured with a fiber length of 2 m is longer than the wavelength used and polarization crosstalk when a fiber having a length of 1,000 m is wound on a reel having a diameter of 40 mm is equal to or less than −35 dB/100 m.
摘要翻译：偏振保持光纤包括：芯; 一对在所述芯的每一侧设置的应力施加部; 以及包围芯和应力部分的包层; 其中，当波长为0.81μm至0.87μm的偏振波保持光纤使用时，光纤长度为2μm的截止波长比所使用的波长长和长度为1000的光纤时的极化串扰 m卷绕在直径为40mm的卷轴上等于或小于-35dB /100μm。

14. 发明授权

US07418178B2 Multi-core fiber 有权
标题翻译：多芯光纤
公开(公告)号：US07418178B2
公开(公告)日：2008-08-26
申请号：US11935113
申请日：2007-11-05
申请人： Manabu Kudou , Kazuhiko Aikawa , Takashi Tsumanuma
发明人： Manabu Kudou , Kazuhiko Aikawa , Takashi Tsumanuma
IPC分类号： G02B6/02
CPC分类号： G02B6/02042
摘要： A multi-core optical fiber apparatus is disclosed. The multi-core optical fiber apparatus includes a cladding comprising quartz and a plurality of cores embedded in the cladding. Each of the cores has a diameter (D) ranging from 1.3 μm to 2.0 μm, a numerical aperture (NA) from 0.35 to 0.45 and a refractive index profile factor (α) from 2.0 to 4.0. A center of each of the cores has a germanium content of 20 wt % to 30 wt %. An interval between adjacent cores is 3.0 μm or more.
摘要翻译：公开了一种多芯光纤装置。多芯光纤设备包括包含石英和包埋在包层中的多个芯的包层。每个芯具有1.3μm至2.0μm的直径（D），0.35至0.45的数值孔径（NA）和2.0至4.0的折射率分布因子（α）。每个芯的中心的锗含量为20重量％至30重量％。相邻芯之间的间隔为3.0μm以上。

15. 发明申请

US20070274666A1 RADIATION RESISTANT SINGLE-MODE OPTICAL FIBER AND METHOD OF MANUFACTURING THEREOF 有权
标题翻译：耐辐射单模光纤及其制造方法
公开(公告)号：US20070274666A1
公开(公告)日：2007-11-29
申请号：US11734695
申请日：2007-04-12
申请人： Kazuhiko AIKAWA , Katsuaki Izoe , Naoki Shamoto , Manabu Kudoh , Takashi Tsumanuma
发明人： Kazuhiko AIKAWA , Katsuaki Izoe , Naoki Shamoto , Manabu Kudoh , Takashi Tsumanuma
IPC分类号： G02B6/00
CPC分类号： G02B6/02 , C03B37/01446 , C03B37/01453 , C03B2201/12 , C03B2201/20 , C03C13/046
摘要： A radiation resistant single-mode optical fiber has a core and a cladding, each made of fluorine-doped silica glass, in which a chlorine concentration of the core is at least 0.01 ppm, a relative refractive index difference of the core based on the refractive index for silica is between −0.30 and −0.10%, a relative refractive index difference of the core based on the refractive index for the cladding is between 0.3% and 0.5%, a cutoff wavelength is 1.27 μm or below, and a bending loss at a wavelength of 1.3 μm and a bending diameter of 20 mm is 0.5 dB/m or less.
摘要翻译：耐辐射单模光纤具有芯和包层，每个由氟掺杂的石英玻璃制成，其中芯的氯浓度至少为0.01ppm，基于折射率的芯的相对折射率差二氧化硅的指数在-0.30至-0.10％之间，基于包层的折射率的芯的相对折射率差为0.3％至0.5％，截止波长为1.27mum或更低，以及在 1.3μm的波长和20mm的弯曲直径为0.5dB / m以下。

16. 发明授权

US07233728B2 Dispersion compensating optical fiber 有权
标题翻译：色散补偿光纤
公开(公告)号：US07233728B2
公开(公告)日：2007-06-19
申请号：US10507078
申请日：2003-03-13
申请人： Kazuhiko Aikawa , Shogo Shimizu , Ryuji Suzuki , Masakazu Nakayama , Kuniharu Himeno
发明人： Kazuhiko Aikawa , Shogo Shimizu , Ryuji Suzuki , Masakazu Nakayama , Kuniharu Himeno
IPC分类号： G02B6/02
CPC分类号： G02B6/03644 , G02B6/02261 , G02B6/02395 , G02B6/0281 , G02B6/03627
摘要： A dispersion-compensated optical fiber which does not cause an increase in a loss if it is wound in a small reel and has a stable temperature characteristics is provided, wherein, in a wavelength range from. A dispersion-compensated optical fiber is formed such that, in at least a wavelength between 1.53 to 1.63 μm, a bending loss of with a 20 mm bending diameter is 5 dB/m or lower, a wavelength dispersion is −120 ps/nm/km or lower, a cut-off wavelength under a usage condition is 1.53 μm or lower, an outer diameter of the cladding is 80 to 100 μm, an outer diameter of a coating is 160 to 200 μm, and a viscosity of a surface of a coating resin is 10 gf/mm or lower. It is set such that b/a is 1.5 to 3.5, c/b is 1.2 to 2.0, a radius of a core is 4 to 8 μm, Δ1 is +1.6% to +2.6%, Δ2 is −0.30% to −1.4%, and Δ3 is −0.30% to +1.0%. Young's modulus of a first coating layer is 0.15 kgf/mm2 or lower and its thickness is 20 to 30 μm. Young's modulus of a second coating layer is 50 kgf/mm2 or lower and its thickness is 15 to 30 μm.
摘要翻译：提供一种色散补偿光纤，如果在小卷轴上卷绕并具有稳定的温度特性，则不会导致损耗增加，其中，在波长范围内。形成色散补偿光纤，使得在至少1.53〜1.63μm之间的波长下，弯曲直径为20mm的弯曲损耗为5dB / m以下，波长色散为-120ps / nm / km以下，使用条件下的截止波长为1.53μm以下，包层的外径为80〜100μm，涂层的外径为160〜200μm，表面的粘度涂布树脂为10gf / mm以下。 b / a设定为1.5〜3.5，c / b为1.2〜2.0，芯的半径为4〜8μm，Delta1为+ 1.6％〜+ 2.6％，Δ2为-0.30％〜-1.4 ％，Delta3为-0.30％〜+ 1.0％。第一涂层的杨氏模量为0.15kgf / mm 2以下，厚度为20〜30μm。第二涂层的杨氏模量为50kgf / mm 2以下，其厚度为15〜30μm。

17. 发明申请

US20060051034A1 Connection method and connecting structure for photonic crystal fiber 有权
标题翻译：光子晶体光纤的连接方法和连接结构
公开(公告)号：US20060051034A1
公开(公告)日：2006-03-09
申请号：US11154731
申请日：2005-06-17
申请人： Ryuji Suzuki , Kazuhiko Aikawa , Kuniharu Himeno , Ning Guan
发明人： Ryuji Suzuki , Kazuhiko Aikawa , Kuniharu Himeno , Ning Guan
IPC分类号： G02B6/255
CPC分类号： G02B6/2551 , G02B6/02347 , G02B6/02361
摘要： A connection method for a photonic crystal fiber for connecting the photonic crystal fiber and a fiber to be connected, the photonic crystal fiber including a cladding region having a number of microholes and a core region having a same refractive index as that of the cladding region, includes the steps of: abutting respective end faces of the photonic crystal fiber and the fiber to be connected each other; after the abutting, performing a main discharge in which an abutted portion is heated by an electric discharge under a first condition; and after the main discharge, performing an additional discharge in which the connection portion is heated by an electric discharge at least once under a second condition to increase a splice strength.
摘要翻译：一种用于连接光子晶体光纤和待连接光纤的光子晶体光纤的连接方法，包括具有多个微孔的包层区域和具有与包层区域相同折射率的纤芯区域的光子晶体光纤，包括以下步骤：将要连接的光子晶体光纤和光纤的各个端面邻接; 在抵接之后，在第一状态下进行通过放电加热抵接部的主放电; 并且在主放电之后，在第二条件下进行至少一次的放电使连接部分被加热的附加放电以增加接合强度。

18. 发明申请

US20050249471A1 Dispersion compensating optical fiber 有权
标题翻译：色散补偿光纤
公开(公告)号：US20050249471A1
公开(公告)日：2005-11-10
申请号：US10507078
申请日：2003-03-13
申请人： Kazuhiko Aikawa , Shogo Shimizu , Ryuji Suzuki , Masakazu Nakayama , Kuniharu Himeno
发明人： Kazuhiko Aikawa , Shogo Shimizu , Ryuji Suzuki , Masakazu Nakayama , Kuniharu Himeno
IPC分类号： G02B6/036 , G02B1/00 , G02B6/02 , G02B6/44 , G02B6/22
CPC分类号： G02B6/03644 , G02B6/02261 , G02B6/02395 , G02B6/0281 , G02B6/03627
摘要： A dispersion-compensated optical fiber which does not cause an increase in a loss if it is wound in a small reel and has a stable temperature characteristics is provided. A dispersion-compensated optical fiber is formed such that, in at least a wavelength between 1.53 to 1.63 μm, a bending loss of 20 mm bending diameter is 5 dB/m or lower, a wavelength dispersion is −120 ps/nm/km or lower, a cut-off wavelength under a usage condition is 1.53 μm or lower, an outer diameter of the cladding is 80 to 100 μm, an outer diameter of a coating is 160 to 200 μm, a viscosity of a surface of a coating resin is 10 gf/mm or lower. It is set such that b/a is 1.5 to 3.5, c/b is 1.2 to 2.0, a radius of a core is 4 to 8 μm, Δ1 is +1.6% to +2.6%, Δ2 is −0.30% to −1.4%, and Δ3 is −0.3 0% to +1.0%. Young's modulus of a first coating layer is 0.15 kgf/nun 2 or lower and its thickness is 20 to 30 μm. Young's modulus of a second coating layer is 50 kgf/mm2 or lower and its thickness is 15 to 30 μm.
摘要翻译：提供了一种弥散补偿光纤，如果卷绕在小卷轴中并且具有稳定的温度特性，则不会导致损耗增加。形成色散补偿光纤，使得在至少1.53〜1.63μm之间的波长下，弯曲直径为20mm的弯曲损耗为5dB / m以下，波长色散为-120ps / nm / km，较低的使用条件下的截止波长为1.53μm或更小，包层的外径为80至100μm，涂层的外径为160至200μm，涂层树脂的表面的粘度为10gf / mm以下。 b / a设定为1.5〜3.5，c / b为1.2〜2.0，芯的半径为4〜8μm，Delta 1为+ 1.6％〜+ 2.6％，Δ2为-0.30％〜 -1.4％，Delta 3为-0.3±0％〜+ 1.0％。第一涂层的杨氏模量为0.15kgf /次/秒以下，其厚度为20〜30μm。第二涂层的杨氏模量为50kgf / mm 2以下，其厚度为15〜30μm。

19. 发明授权

US06876803B2 Optical transmission system 失效
标题翻译：光传输系统
公开(公告)号：US06876803B2
公开(公告)日：2005-04-05
申请号：US10245661
申请日：2002-09-17
申请人： Kazuhiko Aikawa , Shogo Shimizu , Masakazu Nakayama , Kuniharu Himeno
发明人： Kazuhiko Aikawa , Shogo Shimizu , Masakazu Nakayama , Kuniharu Himeno
IPC分类号： G02B6/036 , G02B6/34 , H04B10/2525 , G02B6/16
CPC分类号： G02B6/03644 , G02B6/02004 , G02B6/02261 , G02B6/0228 , G02B6/29377 , H04B10/25253
摘要： The present invention provides an optical transmission system that enables high-speed transmission of 40 Gb/s with low residual dispersion while maintaining the yield of a dispersion compensating fiber. In the present invention, the dispersion compensating fiber is connected to each span of an optical fiber for transmission. One set of an optical transmission path is formed by this optical fiber for transmission and the dispersion compensating fiber, and this one set of optical transmission path is connected in multiple stages and connected to a transmitter and a receiver. By setting the conditions of dispersion compensation in each span comparatively leniently, managing the residual dispersion of each transmission span, and suitably arranging each transmission span, an optical transmission system is composed in which adequate dispersion compensation is performed over the entire optical transmission path.
摘要翻译：本发明提供了一种光传输系统，其能够在保持色散补偿光纤的产量的同时以低残余色散实现40Gb / s的高速传输。在本发明中，色散补偿光纤连接到用于传输的光纤的每个跨度。这种光传输路径由这种用于传输的光纤和色散补偿光纤形成，并且这一组光传输路径被多级连接并连接到发射机和接收机。通过相对宽松地设置每个范围内的色散补偿条件，管理每个传输跨度的残余色散，并适当地布置每个传输跨度，组成了在整个光传输路径上执行适当的色散补偿的光传输系统。

20. 发明申请

US20050041929A1 Connection structure for dispersion compensating optical fiber 失效
标题翻译：色散补偿光纤的连接结构
公开(公告)号：US20050041929A1
公开(公告)日：2005-02-24
申请号：US10950304
申请日：2004-09-23
申请人： Takaaki Suzuki , Shogo Shimizu , Kazuhiko Aikawa , Kuniharu Himeno
发明人： Takaaki Suzuki , Shogo Shimizu , Kazuhiko Aikawa , Kuniharu Himeno
IPC分类号： G02B6/02 , G02B6/036 , G02B6/255 , G02B6/26
CPC分类号： G02B6/02261 , G02B6/03627 , G02B6/03644 , G02B6/0365 , G02B6/2552
摘要： In fusion-splicing a dispersion compensating optical fiber having a negative dispersion slope, with a connection optical fiber having a different near field pattern from that of the dispersion compensating optical fiber, if for the connection optical fiber, one is selected such that a theoretical joint loss in a used wavelength, obtained from an overlap integral of a near field pattern of the dispersion compensating optical fiber after fusion splicing and a near field pattern of the connection optical fiber after fusion splicing is presumed to be 0.3 dB or less, in an unconnected state, a construction enabling connection at a low loss results.
摘要翻译：在使用具有与色散补偿光纤不同的近场图案的连接光纤熔接具有负色散斜率的色散补偿光纤时，如果对于连接光纤，选择一个理论接头在熔接后的色散补偿光纤的近场图案与熔接后的连接光纤的近场图案的重叠积分中获得的使用波长的损失在未连接的情况下被推定为0.3dB以下状态，一种能够以低损失结果实现连接的结构。

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