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公开(公告)号：US07233728B2
公开(公告)日：2007-06-19
申请号：US10507078
申请日：2003-03-13
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。
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72.发明申请公开(公告)号：US20060192942A1
公开(公告)日：2006-08-31
申请号：US11405407
申请日：2006-04-18
CPC分类号： G02B6/02285 , G01M11/3181
摘要： A method of measuring polarization mode dispersion (PMD) of an optical fiber, includes estimating PMD when an optical fiber is formed as an optical cable, from a beat length when the optical fiber is wound around a bobbin, and an average coupling length when the optical fiber is formed as the optical cable.
摘要翻译： 测量光纤的偏振模色散（PMD）的方法包括：当光纤缠绕在绕线管上时，从形成光纤作为光缆的估计PMD，以及当光纤缠绕在绕线管上时的平均耦合长度 形成光纤作为光缆。
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73.发明申请Single-mode optical fiber, optical fiber cable, optical fiber cord, and method for ensuring service life of optical fiber 审中-公开单模光纤，光缆，光纤线，以及确保光纤使用寿命的方法公开(公告)号：US20060115224A1
公开(公告)日：2006-06-01
申请号：US11287284
申请日：2005-11-28
IPC分类号： G02B6/02
CPC分类号： G02B6/0365 , G02B6/02
摘要： A single-mode optical fiber, cable, cord, and a method for ensuring a service life of the fiber are provided. The fiber has a core and a cladding, the fiber having a cut-off wavelength that exhibits a single-mode transmission in a 1.31 μm wavelength band. A relative refractive index difference of the core with respect to the cladding is adjusted such that a bending loss, when a bend is applied in a radius smaller than a limit bending radius of the fiber, becomes greater than a detection limit value. The limit bending radius is calculated from a relationship between a bending radius applied to the optical fiber and a failure probability which occurs after a time period. The method includes measuring a loss and ensuring that a failure probability of the fiber during a service life falls within a failure probability used for setting the limit bending radius.
摘要翻译： 提供单模光纤，电缆，电线以及确保光纤使用寿命的方法。 光纤具有芯和包层，光纤具有在1.31μm波长带中呈现单模传输的截止波长。 调整芯相对于包层的相对折射率差，使得当以小于光纤的极限弯曲半径的半径施加弯曲时的弯曲损耗变得大于检测极限值。 极限弯曲半径由施加到光纤的弯曲半径与时间之后发生的故障概率之间的关系计算。 该方法包括测量损耗并确保光纤在使用寿命期间的故障概率落在用于设置极限弯曲半径的故障概率内。
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公开(公告)号：US07043126B2
公开(公告)日：2006-05-09
申请号：US10891177
申请日：2004-07-15
申请人： Ning Guan , Katsuhiro Takenaga , Kuniharu Himeno
发明人： Ning Guan , Katsuhiro Takenaga , Kuniharu Himeno
CPC分类号： G02B6/0288
摘要： A graded-index multimode fiber includes a core containing fluorine and a cladding which is provided at an outer periphery of the core, and the fiber has a refractive index profile which satisfies the following Formula (1): n ( r ) = { n 1 [ 1 - 2 Δ ( r a ) α ] 1 / 2 ( O ≤ r ≤ a ) n 1 ( 1 - 2 Δ ) 1 / 2 ( r > a ) ( 1 ) where n(r) is a refractive index of the optical fiber at a distance “r” from the center of the core, n1 is a refractive index at the center of the core, Δ is a relative refractive index difference of the center of the core with respect to the cladding, “a” is a core radius, and α is a refractive index profile exponential parameter.
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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。
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公开(公告)号：US20060039665A1
公开(公告)日：2006-02-23
申请号：US11244195
申请日：2005-10-06
IPC分类号： G02B6/036
CPC分类号： G02B6/02009 , G02B6/0365 , G02B6/03672 , G02B6/03688
摘要： An optical fiber includes: a core at a center; a first cladding layer; a second cladding layer; and a third cladding layer. A maximum refractive index of the core is greater than any of maximum refractive indices of the first cladding layer, the second cladding layer, and the third cladding layer, and the maximum refractive index of the second cladding layer is smaller than any of the maximum refractive indices of the first and the third cladding layer. Additionally, a ratio of a2/a1 is not less than about 2.5 and not more than about 4.5, where a1 represents the radius of the core, and a2 represents the radius of an outer periphery of the first cladding layer, and a relative refractive index difference of the core with respect to a maximum refractive index of the third cladding layer is not less than 0.20% and not more than 0.70%.
摘要翻译： 光纤包括：中心的芯; 第一包层; 第二覆层; 和第三覆层。 芯的最大折射率大于第一包层，第二包层和第三包层的最大折射率中的任何一个，并且第二包层的最大折射率小于任何最大折射率 第一和第三包层的指数。 此外，2×2 / a <1的比例不小于约2.5且不大于约4.5，其中1表示芯的半径，而2 表示第一包层的外周的半径，芯相对于第三包层的最大折射率的相对折射率差为0.20％以上且0.70％以下。
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公开(公告)号：US20050249471A1
公开(公告)日：2005-11-10
申请号：US10507078
申请日：2003-03-13
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。
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78.发明申请公开(公告)号：US20050135762A1
公开(公告)日：2005-06-23
申请号：US11028756
申请日：2005-01-05
申请人： Masashi Ikeda , Masakazu Nakayama , Kuniharu Himeno , Masaaki Ohtsuka , Masakazu Oohashi , Daiichiro Tanaka
发明人： Masashi Ikeda , Masakazu Nakayama , Kuniharu Himeno , Masaaki Ohtsuka , Masakazu Oohashi , Daiichiro Tanaka
CPC分类号： G02B6/024 , C03B2201/02 , C03B2201/12 , C03B2201/28 , C03B2201/31 , C03B2203/23 , C03B2203/30 , C03C13/046 , C03C13/048 , G02B6/02 , G02B6/2551 , H01S3/06708 , H01S3/06729
摘要： An optical fiber that includes a core containing a first concentration of germanium, an inner cladding arranged on the core, the inner cladding containing a second concentration of germanium and having a first diffusion coefficient, and an outer cladding arranged on the inner cladding, the outer cladding having a second diffusion coefficient, where the first diffusion coefficient is larger than the second diffusion coefficient, and where the first concentration of germanium is about 200% or more of the second concentration of germanium. An optical fiber constructed in this manner can be spliced with an optical fiber having a different MFD, such as a single-mode optical fiber or an erbium-doped optical fiber, with low splice loss and a sufficient splicing strength.
摘要翻译： 一种光纤，其包括含有锗的第一浓度的芯，设置在芯上的内包层，包含锗的第二浓度并具有第一扩散系数的内包层以及布置在内包层上的外包层 包层具有第二扩散系数，其中第一扩散系数大于第二扩散系数，并且其中第一浓度的锗为第二浓度的锗的约200％以上。 以这种方式构造的光纤可以用具有不同MFD的光纤（例如单模光纤或掺铒光纤）进行拼接，具有低接头损耗和足够的拼接强度。
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公开(公告)号：US06876803B2
公开(公告)日：2005-04-05
申请号：US10245661
申请日：2002-09-17
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。
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公开(公告)号：US20050041929A1
公开(公告)日：2005-02-24
申请号：US10950304
申请日：2004-09-23
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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