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1. 发明授权

US07496261B2 Dispersion compensating optical fiber and dispersion compensating optical fiber module 有权
标题翻译：色散补偿光纤和色散补偿光纤模块
公开(公告)号：US07496261B2
公开(公告)日：2009-02-24
申请号：US11203890
申请日：2005-08-15
申请人： Kazuhiko Aikawa , Yutaka Nagasawa , Shogo Shimizu , Takaaki Suzuki , Masakazu Nakayama , Kuniharu Himeno , Ryozo Yamauchi , Keiji Ohashi , Munehisa Fujimaki
发明人： Kazuhiko Aikawa , Yutaka Nagasawa , Shogo Shimizu , Takaaki Suzuki , Masakazu Nakayama , Kuniharu Himeno , Ryozo Yamauchi , Keiji Ohashi , Munehisa Fujimaki
IPC分类号： G02B6/036
CPC分类号： G02B6/02009 , G02B6/02261 , G02B6/0228 , G02B6/02395 , G02B6/03627 , G02B6/03644
摘要： A dispersion compensating optical fiber for NZ-DSFs, includes: an uncovered dispersion compensating optical fiber; a double-layered resin coating disposed around the uncovered dispersion compensating optical fiber; and an outer coating layer having a thickness of 3 to 7 μm, containing silicone in an amount of 1 to 5% by weight, and disposed around the double-layered resin coating. The outer diameter of the uncovered dispersion compensating optical fiber is in a range from 90 to 125 μm, an outer diameter of the dispersion compensating optical fiber is in a range from 180 to 250 μm, and the amount of silicone contained in the outer coating layer is determined such that an adhesive property of the outer coating layer is 1 gf/mm or less.
摘要翻译：用于NZ-DSF的色散补偿光纤包括：未覆盖的色散补偿光纤; 设置在未覆盖的色散补偿光纤周围的双层树脂涂层; 以及厚度为3〜7μm的外涂层，含有1〜5重量％的硅氧烷，并且设置在双层树脂涂层的周围。未覆盖的色散补偿光纤的外径在90〜125μm的范围内，色散补偿光纤的外径在180〜250μm的范围内，外涂层的硅氧烷的含量确定为外涂层的粘合性为1gf / mm以下。

2. 发明授权

US07050672B1 Polarization-maintaining optical fiber and polarization-maintaining optical fiber component 有权
标题翻译：偏振保持光纤和偏振保持光纤部件
公开(公告)号：US07050672B1
公开(公告)日：2006-05-23
申请号：US09638162
申请日：2000-08-14
申请人： Ryokichi Matsumoto , Hideki Sasaki , Kenji Nishide , Ryozo Yamauchi , Shigefumi Yamasaki
发明人： Ryokichi Matsumoto , Hideki Sasaki , Kenji Nishide , Ryozo Yamauchi , Shigefumi Yamasaki
IPC分类号： G02B6/27
CPC分类号： G02B6/2843 , G02B6/105
摘要： A polarization-maintaining optical fiber component which suppresses coupling of propagating light to a high-order mode at the optical coupling section of the polarization-maintaining optical fiber component, caused by different refractive indexes between the stress applying sections and the cladding, thus reducing excess loss, is constructed by using a polarization-maintaining optical fiber having stress applying sections arranged symmetrically to each other with respect to a core in a cladding surrounding the core, wherein the largest one of those concentric circles of the core or the said cladding which do not reach the stress applying sections and do not include the stress applying sections within has a diameter of 20 μm or greater.
摘要翻译：在偏振保持光纤部件的光耦合部分抑制传播光耦合到高阶模式的偏振保持光纤部件，由应力施加部分和包层之间的不同折射率引起，从而减少了多余的损耗通过使用具有相对于围绕芯的包层中的芯彼此对称布置的应力施加部分的偏振保持光纤构成，其中芯或所述包层中的最大的一个同心圆做没有到达应力施加部分，并且不包括其内的应力施加部分具有20μm或更大的直径。

3. 发明授权

US5995695A Dispersion compensating optical fiber 失效
标题翻译：色散补偿光纤
公开(公告)号：US5995695A
公开(公告)日：1999-11-30
申请号：US59242
申请日：1998-04-13
申请人： Kazuhiko Aikawa , Akira Wada , Kuniharu Himeno , Ryozo Yamauchi
发明人： Kazuhiko Aikawa , Akira Wada , Kuniharu Himeno , Ryozo Yamauchi
IPC分类号： G02B6/02 , G02B6/036
CPC分类号： G02B6/02261 , G02B6/0228 , G02B6/03627
摘要： The present invention is related to an dispersion compensating optical fiber technology, comprising a central core, a middle part with a refractive index lower than this central core, and a cladding with a refractive index higher than said middle part and lower than said central core, characterized in: an outer diameter of said middle part being 2.5.about.3.5 times an outer diameter of said central core; a relative refractive index difference of said cladding to said middle part being -0.08.about.-0.2% with the refractive index of the cladding being zero; and having substantially single-mode transmission in the wavelength 1.55 .mu.m band, the chromatic dispersion being -80 ps/nm/km or less, the dispersion slope being +0.08 ps/nm.sup.2 /km or less, and the bending loss being 1.0 dB/m or less.
摘要翻译：本发明涉及一种色散补偿光纤技术，其包括中心纤芯，折射率低于该中心纤芯的中间部分和折射率高于所述中间部分且低于所述中心纤芯的包层，其特征在于，所述中间部分的外径为所述中心芯的外径的2.5倍; 所述包层与所述中间部分的相对折射率差为包层折射率为零的-0.08差异-0.2％; 并且在1.55μm波长的波段中具有基本的单模传输，色散为-80ps / nm / km或更小，色散斜率为+0.08ps / nm2 / km或更小，弯曲损耗为1.0dB / m以下。

4. 发明授权

US5930437A Optical filter with planar optical waveguide having periodically varied distribution of refractive index and production process thereof 失效
$Optical filter with planar optical waveguide having periodically varied distribution of refractive index and production process thereof$
标题翻译：具有平面光波导的光学滤波器具有周期性变化的折射率分布及其制造方法
公开(公告)号：US5930437A
公开(公告)日：1999-07-27
申请号：US825912
申请日：1997-04-02
申请人： Michihiro Nakai , Kensuke Shima , Hiroshi Hidaka , Satoshi Okude , Masaaki Sudoh , Tetsuya Sakai , Akira Wada , Ryozo Yamauchi
发明人： Michihiro Nakai , Kensuke Shima , Hiroshi Hidaka , Satoshi Okude , Masaaki Sudoh , Tetsuya Sakai , Akira Wada , Ryozo Yamauchi
IPC分类号： G02B6/00 , G02B6/12 , G02B6/122 , G02B6/124 , G02B6/13 , G02B6/10
CPC分类号： G02B6/124 , G02B2006/12107 , G02B2006/12109
摘要： Core comprises a main stem which is formed on a substrate, linearly extending in the beam propagating direction and short branches with a certain length which extend perpendicularly to the beam propagating direction toward both sides along the plane of the substrate and are arranged at regular intervals in the beam propagating direction. Thus, the branches are arranged in a ladder geometry when it is viewed from the top, forming a rectangular waveform arrangement. The core constitutes a grating structure in which the width of the core is made to vary periodically with the branches in the beam propagating direction.
摘要翻译：芯部包括形成在基板上的主杆，其在光束传播方向上线性延伸并且具有一定长度的短分支，其沿着基板的平面朝向两侧垂直于光束传播方向延伸，并且以规则的间隔布置光束传播方向。因此，当从顶部观察时，分支被布置成梯形几何形状，形成矩形波形布置。芯构成了光栅结构，其中芯的宽度使光束传播方向上的分支周期性地变化。

5. 发明授权

US5267339A Optical fiber having a core with a repeatedly changing constitutional parameter 失效
标题翻译：具有核心的光纤具有重复变化的结构参数
公开(公告)号：US5267339A
公开(公告)日：1993-11-30
申请号：US895480
申请日：1992-06-08
申请人： Ryozo Yamauchi , Akira Wada , Tetsuo Nozawa , Daiichirou Tanaka , Tetsuya Sakai
发明人： Ryozo Yamauchi , Akira Wada , Tetsuo Nozawa , Daiichirou Tanaka , Tetsuya Sakai
IPC分类号： C03C13/04 , C03B37/014 , C03B37/025 , C03B37/029 , G02B6/02
CPC分类号： C03B37/029 , C03B37/01413 , C03B37/0253 , G02B6/02 , C03B2201/12 , C03B2201/31 , C03B2203/02 , C03B2203/06 , C03B2203/10 , C03B2203/18 , C03B2203/24 , C03B2203/36 , C03B2205/40
摘要： The present invention is directed to an optical fiber comprising a core and a cladding layer wherein at least one of the constitutional parameters thereof changes along the longitudinal direction of the optical fiber. In order to present a useful optical fiber wherein the occurrence of a Brillouin scattering is prevented, an optical fiber having altered constitutional parameters is found to be effective. The constitutional parameters mean the parameters which determine the constitution of the optical fiber and is capable of influencing the condition of electromagnetic wave transmitting therethrough such as light or acoustic wave. The constitutional parameters include diameter of the core, index of refraction of the core, diameter of the optical fiber, composition of the glass, residual stress of the core. Some examples are disclosed about their manufacturing process and the test results. Much improvement was measured, especially in the use for a single mode optical fiber.

6. 发明授权

US5066087A Optical fiber coupler 失效
标题翻译：光纤耦合器
公开(公告)号：US5066087A
公开(公告)日：1991-11-19
申请号：US490026
申请日：1990-03-07
申请人： Ryozo Yamauchi , Noboru Kawakami , Fumio Suzuki
发明人： Ryozo Yamauchi , Noboru Kawakami , Fumio Suzuki
IPC分类号： G02B6/28 , G02B6/34
CPC分类号： G02B6/29332 , G02B6/2835
摘要： The optical fiber coupler of the present invention is characterized in that, for a defined section in which two or more component optical fibers are thermally fused and elongated thereby forming a fused-elongated region which constitutes the optical fiber coupler, that at least one of the component optical fibers is formed from a single mode optical fiber material employed within a parameter range in which the mode field diameter increases monotonically with decrease in the diameter of the optical fiber core. The optical fiber coupler is further characterized in that, when using optical fibers from which a portion of the coating material has been removed thereby exposing the cladding, and by aligning two or more of such component optical fibers side by side in a plane and mutually thermally fusing the exposed cladding of adjacent optical fibers, after which the fused region is drawn out, thereby forming a fused-elongated region which constitutes the optical fiber coupler, for such an optical fiber coupler, optical fiber material is used in which the softening temperature of the core is higher than that of the cladding, and further, for the drawing out of the mutually fused sections, the tension employed is such that by virtue of remaining stress, the refractive index of the core is reduced.
摘要翻译：本发明的光纤耦合器的特征在于，对于其中两个或更多个组件光纤被热熔合和拉长的限定部分，由此形成构成光纤耦合器的熔融拉长区域，至少一个分量光纤由单模光纤材料形成，该单模光纤材料在模场直径随着光纤芯直径的减小而单调增加的参数范围内使用。光纤耦合器的特征还在于，当使用从其中去除了一部分涂层材料的光纤而使包层暴露的光纤，并且通过将两个或更多个这种组件光纤并排在一个平面中并相互热熔化相邻光纤的暴露的包层，之后将熔融区域拉出，从而形成构成光纤耦合器的熔融 - 伸长区域，对于这种光纤耦合器，使用光纤材料，其中软化温度该芯高于包层的芯，此外，为了从相互熔合的部分拉出，所使用的张力使得由于剩余应力，芯的折射率降低。

7. 发明授权

US4935045A Method of manufacturing a preform for asymmetrical optical fiber 失效
标题翻译：制造不对称光纤预制棒的方法
公开(公告)号：US4935045A
公开(公告)日：1990-06-19
申请号：US297971
申请日：1989-01-17
申请人： Ryozo Yamauchi , Matsuhiro Miyamoto , Tatsuyuki Oohashi , Osamu Fukuda
发明人： Ryozo Yamauchi , Matsuhiro Miyamoto , Tatsuyuki Oohashi , Osamu Fukuda
IPC分类号： G02B6/024 , C03B20/00 , C03B37/014 , C03B37/018 , G02B6/02
CPC分类号： C03B37/0142 , C03B37/01493 , C03B2203/30 , C03B2203/31 , C03B2203/34 , C03B2207/06 , C03B2207/20 , C03B2207/60
摘要： Disclosed is a method of manufacturing a preform for an asymmetric optical fiber which comprises the steps of (a) fixing plural transparent glass rods involving at least one core-mother rod functioning as the core in said optical fiber in parallel relationship, (b) depositing glass soot around an assembly of said plural parallel fixed glass rods, thereby providing a single porous cladding bearing the predetermined shape, and (c) vitrifying the porous cladding by thermal fusion, thereby providing the entirely integral transparent preform. The above method does not involve any process of perforating a drilled-pore which is needed inevitably in conventional method. Therefore, it is possible to obtain a long preform with high dimensional precision, and to fabricate the optical fiber with low transmission loss.

8. 发明申请

US20060062534A1 Dispersion compensating optical fiber and dispersion compensating optical fiber module 有权
公开(公告)号：US20060062534A1
公开(公告)日：2006-03-23
申请号：US11203890
申请日：2005-08-15
申请人： Kazuhiko Aikawa , Yutaka Nagasawa , Shogo Shimizu , Takaaki Suzuki , Masakazu Nakayama , Kuniharu Himeno , Ryozo Yamauchi , Keiji Ohashi , Munehisa Fujimaki
发明人： Kazuhiko Aikawa , Yutaka Nagasawa , Shogo Shimizu , Takaaki Suzuki , Masakazu Nakayama , Kuniharu Himeno , Ryozo Yamauchi , Keiji Ohashi , Munehisa Fujimaki
IPC分类号： G02B6/036
CPC分类号： G02B6/02009 , G02B6/02261 , G02B6/0228 , G02B6/02395 , G02B6/03627 , G02B6/03644
摘要： A dispersion compensating optical fiber for NZ-DSFs, includes: an uncovered dispersion compensating optical fiber; a double-layered resin coating disposed around the uncovered dispersion compensating optical fiber; and an outer coating layer having a thickness of 3 to 7 μm, containing silicone in an amount of 1 to 5% by weight, and disposed around the double-layered resin coating. The outer diameter of the uncovered dispersion compensating optical fiber is in a range from 90 to 125 μm, an outer diameter of the dispersion compensating optical fiber is in a range from 180 to 250 μm, and the amount of silicone contained in the outer coating layer is determined such that an adhesive property of the outer coating layer is 1 gf/mm or less.

9. 发明授权

US06442313B2 Optical fiber grating and manufacturing method thereof 有权
标题翻译：光纤光栅及其制造方法
公开(公告)号：US06442313B2
公开(公告)日：2002-08-27
申请号：US09777085
申请日：2001-02-05
申请人： Ryozo Yamauchi , Akira Wada , Tetsuya Sakai , Nobuyuki Tanaka , Kensuke Shima , Kenji Nishide , Shigefumi Yamasaki
发明人： Ryozo Yamauchi , Akira Wada , Tetsuya Sakai , Nobuyuki Tanaka , Kensuke Shima , Kenji Nishide , Shigefumi Yamasaki
IPC分类号： G02B634
CPC分类号： G02B6/02147 , G02B6/02095
摘要： An optical fiber grating is manufactured by heating intermittently an optical fiber, provided with a core having residual stress in the longitudinal direction, softening a peripheral cladding of the core, and forming spatial periodical changes for the relative refractive index-difference between the core and the cladding, in the longitudinal direction of the aforementioned optical fiber by having the index of refraction of the core change, through the releasing of the aforementioned residual stress. As a result, an optical fiber grating and the manufacturing method thereof, which do not require expensive equipment and which exhibit high productivity, and furthermore a grating characteristic which is stable over time can be provided.
摘要翻译：光纤光栅通过间歇地加热设置有在纵向上具有残余应力的芯的光纤，软化芯的外围包层，并且形成芯与芯的相对折射率差的空间周期性变化通过释放上述残余应力，通过使芯的折射率变化，在上述光纤的长度方向上包覆。结果，可以提供不需要昂贵的设备并且表现出高生产率的光纤光栅及其制造方法，此外还可以提供一种随时间稳定的光栅特性。

10. 发明授权

US5996375A Method of making an optical waveguide grating with two dissimilar irradiating steps 失效
标题翻译：制造具有两个不同辐射步骤的光波导光栅的方法
公开(公告)号：US5996375A
公开(公告)日：1999-12-07
申请号：US837958
申请日：1997-04-14
申请人： Michihiro Nakai , Kensuke Shima , Hiroshi Hidaka , Satoshi Okude , Masaaki Sudoh , Tetsuya Sakai , Akira Wada , Ryozo Yamauchi
发明人： Michihiro Nakai , Kensuke Shima , Hiroshi Hidaka , Satoshi Okude , Masaaki Sudoh , Tetsuya Sakai , Akira Wada , Ryozo Yamauchi
IPC分类号： C03B37/10 , G02B5/18
CPC分类号： G02B6/02142 , G02B6/02138 , G02B6/02152
摘要： A method of producing an optical waveguide grating by exposure to light. An optical waveguide having a core composed of a material wherein the refractive index changes due to exposure to UV light is formed into an optical waveguide grating by applying a grating portion formation step wherein a grating portion is formed by irradiation with UV light at a predetermined spacing, and an overall exposure step after formation of the grating portion wherein the entire grating portion is irradiated with UV light. As a result, the effective refractive index of the grating portion is changed so as to allow the central wavelength to be adjusted without changing the rejection. Consequently, the grating properties can be precisely and easily controlled.
摘要翻译：一种通过曝光产生光波导光栅的方法。具有由其中由于暴露于UV光而引起的折射率变化的材料的芯构成的光波导通过施加光栅部分形成步骤形成为光波导光栅，其中通过以预定间隔照射UV光形成光栅部分，并且在形成光栅部分之后的整体曝光步骤，其中整个光栅部分被UV光照射。结果，改变了光栅部分的有效折射率，以便可以调节中心波长而不改变排斥。因此，可以精确且容易地控制光栅特性。

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