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1. 发明授权

US5030265A Optical fiber coupler manufacturing device 失效
标题翻译：光纤耦合器制造装置
公开(公告)号：US5030265A
公开(公告)日：1991-07-09
申请号：US516500
申请日：1990-05-01
申请人： Fumio Suzuki , Noboru Kawakami , Yoshio Kikuchi , Ryozo Yamauchi
发明人： Fumio Suzuki , Noboru Kawakami , Yoshio Kikuchi , Ryozo Yamauchi
IPC分类号： G02B6/28
CPC分类号： G02B6/2835
摘要： A optical fiber coupler manufacturing device is disclosed for the manufacture of fused-elongated type optical fiber couplers. The disclosed invention provides an optical fiber coupler manufacturing device having a chassis, a pair of movable stands provided within the chassis forming a space therebetween, optical fiber mounting units for mounting and fixing two or more component optical fibers on the above mentioned pair of movable stands, and a drive mechanism whereby the pair of movable stands can be driven back and forth in a direction parallel to the longitudinal axes of the component optical fibers. By virtue of the space formed between the two movable stands, a heat source can be applied to the aligned portions of the component optical fibers, thereby effecting thermal fusing of the aligned portions, after which drawing out of the thus fused section can be effected using the above mentioned drive mechanism for the movable stands, and additionally, a protective case for surrounding and reinforcing the manufactured optical fiber coupler can easily be applied without removing the optical fiber coupler from the apparatus through the above described space.

2. 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。

3. 发明授权

US5058979A Optical fiber coupler and a fabrication method for the same 失效
标题翻译：光纤耦合器及其制造方法
公开(公告)号：US5058979A
公开(公告)日：1991-10-22
申请号：US242469
申请日：1990-06-21
申请人： Ryozo Yamauchi , Noboru Kawakami , Fumio Suzuki
发明人： Ryozo Yamauchi , Noboru Kawakami , Fumio Suzuki
IPC分类号： G02B6/255 , G02B6/28 , G02B6/34
CPC分类号： G02B6/29332 , G02B6/2552 , G02B6/2835 , G02B2006/2865
摘要： The present invention provides a wide wavelength range optical fiber coupler that to the greatest extent possible, allows optical coupling which is wavelength independent, and thus demonstrates a constant coupling ratio over a wide range of wavelengths. By causing various irregularities to be formed in the fused-elongated region of an optical fiber coupler, thereby leading to the generation of additional modes in addition to the fundamental modes, while at the same time causing multiple mode coupling in which the above mentioned additional modes participate in the coupling of the fundamental modes, it is possible to selectively control the coupling strength at determined wavelengths and thereby achieve optical coupling which is largely wavelength independent and thus demonstrates a relatively constant coupling ratio over a wide range of wavelengths. Furthermore, by causing the strength of coupling between the cores of each component optical fiber to vary along the length of the longitudinal axis of each component optical fiber, it is possible to decrease the degree of sinusoidal variation in the wavelength dependance characteristics of each component optical fiber, thereby making it possible to further achieve optical coupling which is wavelength independent and thus considerably constant over a wide range of wavelengths.

4. 发明授权

US5848208A Optical-fiber coupler and manufacturing process therefor 失效
标题翻译：光纤耦合器及其制造工艺
公开(公告)号：US5848208A
公开(公告)日：1998-12-08
申请号：US893145
申请日：1997-07-15
申请人： Fumio Suzuki , Hideki Sasaki , Shigefumi Yamasaki , Tomio Abiru , Ryozo Yamauchi
发明人： Fumio Suzuki , Hideki Sasaki , Shigefumi Yamasaki , Tomio Abiru , Ryozo Yamauchi
IPC分类号： G02B6/28 , G02B6/26
CPC分类号： G02B6/2835
摘要： In an optical-fiber coupler formed by disposing two single-mode optical fibers 1 and 2 in parallel, and fusing and elongating the optical fibers at one position in the longitudinal extent of the optical fibers 1 and 2, variation of insertion loss dependent on the polarization can be eliminated in its manufacturing by imparting a twist to the optical coupling part 3' of the fused-elongated portion 3 so that with respect to the direction of a line on a plane orthogonally intersecting the longitudinal direction of the optical fibers 1 and 2, the line linking the centers of the two optical fibers 1 and 2, the direction of the line on a plane at one end of the optical coupling part 3' of the fused-elongated portion 3 makes an angle of 90 degrees with the direction of the line on a plane at the other end of the optical coupling part 3'.
摘要翻译：在通过平行设置两个单模光纤1和2而形成的光纤耦合器中，并且在光纤1和2的纵向范围内的一个位置处将光纤熔合和伸长，插入损耗的变化取决于通过对熔融拉长部3的光耦合部3'施加扭曲，使得相对于与光纤1,2的纵向方向正交的平面上的线的方向，可以消除极化连接两个光纤1和2的中心的线，在熔融拉长部分3的光耦合部分3'的一端的平面上的线的方向与90°的方向成为在光耦合部分3'的另一端的平面上的线。

5. 发明授权

US5689578A Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler 失效
标题翻译：极化波保持光纤，其制造方法，其连接方法，光放大器，激光振荡器和偏振波保持光纤耦合器
公开(公告)号：US5689578A
公开(公告)日：1997-11-18
申请号：US318848
申请日：1994-10-25
申请人： Ryozo Yamauchi , Kuniharu Himeno , Minoru Sawada , Fumio Suzuki , Kazuhiko Aikawa , Tetsuo Nozawa , Shigefumi Yamasaki
发明人： Ryozo Yamauchi , Kuniharu Himeno , Minoru Sawada , Fumio Suzuki , Kazuhiko Aikawa , Tetsuo Nozawa , Shigefumi Yamasaki
IPC分类号： C03B37/012 , G02B6/10 , G02B6/255 , G02B6/28 , G02B6/34 , H01S3/067
CPC分类号： G02B6/024 , C03B37/01217 , C03B37/01222 , G02B6/02042 , G02B6/2843 , H01S3/06708 , C03B2201/31 , C03B2201/36 , C03B2203/02 , C03B2203/12 , C03B2203/22 , C03B2203/30 , C03B2203/31 , C03B2203/34 , G02B6/2551 , G02B6/2552
摘要： The polarization-maintaining optical fiber 10 of the present invention is designed so that a plurality of core portions 12a,12b which have a high refractive index is provided in parallel along a single diameter direction in the cross section of the optical fiber, these core portions 12a,12b cooperating to propagate a single fundamental mode. In the production method for the polarization-maintaining optical fiber of the present invention, a plurality of holes 22 are formed longitudinally in parallel along a single diameter direction of a glass rod 21 having a low refractive index which forms the cladding, glass rods 23 for core use having a high refractive index which form the core portions are inserted into these holes 22, heating to form a unitary body is carried out, creating a preform which is then drawn. Further, the rare-earth-doped polarization-maintaining optical fiber of the present invention uses a rare earth element to dope the optical waveguide portion of the polarization-maintaining optical fiber, and can be employed in a light amplifier or laser oscillator. Moreover, the polarization-maintaining optical fiber coupler of the present invention is formed by bringing two or more polarization maintaining optical fibers into contact, heating, fusing and elongating them, and heating the vicinity of the connection point before and after connection.
摘要翻译： PCT No.PCT / JP94 / 00300 Sec。 371日期：1994年10月25日 102（e）日期1994年10月25日PCT 1994年2月24日PCT PCT。第WO94 / 17714号公报日期1994年9月1日本发明的偏振波保持光纤10被设计成使得在光学部件的横截面中沿着单一直径方向平行设置多个具有高折射率的芯部12a，12b 光纤，这些芯部分12a，12b协作传播单个基本模式。在本发明的偏振波保持光纤的制造方法中，多个孔22沿着形成包层的折射率低的玻璃棒21的单一直径方向纵向平行地形成，玻璃棒23用于形成芯部的具有高折射率的芯用途被插入到这些孔22中，进行加热以形成整体，形成预先形成的预成型体。此外，本发明的稀土掺杂偏振保持光纤使用稀土元素来掺杂保偏光纤的光波导部分，并且可以用在光放大器或激光振荡器中。此外，本发明的偏振保持光纤耦合器是通过使两个或更多个保偏光纤接触，加热，熔化和拉伸，以及在连接之前和之后加热连接点附近而形成的。

6. 发明授权

US5024501A Manufacturing method for polarization maintaining optical fiber couplers 失效
标题翻译：用于偏振维持光纤耦合器的制造方法
公开(公告)号：US5024501A
公开(公告)日：1991-06-18
申请号：US506402
申请日：1990-04-09
申请人： Hiroyuki Taya , Mikio Yoshinuma , Takeshi Yamada , Kenji Nishide , Fumio Suzuki , Hirohisa Fujimoto , Ryozo Yamauchi
发明人： Hiroyuki Taya , Mikio Yoshinuma , Takeshi Yamada , Kenji Nishide , Fumio Suzuki , Hirohisa Fujimoto , Ryozo Yamauchi
IPC分类号： G02B6/28
CPC分类号： G02B6/2843
摘要： The present invention discloses a manufacturing method for polarization maintaining optical fiber couplers which are used for joining light signals and at optical fiber branch points. The disclosed manufacturing method employs polarization maintaining optical fibers, and describes a method for mutually aligning the stress applying parts of such optical fibers so that polarized optical signals are maintained in the polarized state when transiting such couplers.

7. 发明授权

US5526459A Erbium-doped silica optical fiber preform 失效
标题翻译：掺铒二氧化硅光纤预制棒
公开(公告)号：US5526459A
公开(公告)日：1996-06-11
申请号：US402592
申请日：1995-03-13
申请人： Daiichirou Tanaka , Akira Wada , Tetsuya Sakai , Tetsuo Nozawa , Ryozo Yamauchi
发明人： Daiichirou Tanaka , Akira Wada , Tetsuya Sakai , Tetsuo Nozawa , Ryozo Yamauchi
IPC分类号： C03B8/04 , C03B20/00 , C03B37/014 , C03C13/04 , G02B6/00
CPC分类号： C03B37/01433 , C03C13/045 , C03B2201/36
摘要： A manufacturing method for erbium doped silica, having a soot formation process, in which a silica glass soot is deposited on a seed rod for forming a soot preform in a porous state on the seed rod, a dopant impregnation process, wherein the soot preform is impregnated with at least an erbium compound, and a preform formation process, wherein this soot preform impregnated with a dopant is heated and rendered transparent. The dopant impregnation process is provided with an operation in which the soot preform obtained in the soot formation process is dipped in a solution containing an erbium compound, an aluminum compound, and a phosphorus compound; this is then desiccated, and soot preform which is impregnated with the erbium compound, the aluminum compound, and the phosphorus compound is obtained.
摘要翻译：一种铒掺杂二氧化硅的制造方法，其具有烟炱形成方法，其中将硅石烟炱沉积在用于在种棒上形成多孔状态的烟炱预型体的种棒上，掺杂剂浸渍方法，其中所述烟炱预型体为用至少铒化合物浸渍，以及预成型物形成工艺，其中浸渍有掺杂剂的该烟炱预制件被加热并变得透明。掺杂剂浸渍方法具有将烟灰形成工艺中获得的烟灰预制件浸入含有铒化合物，铝化合物和磷化合物的溶液中的操作; 然后将其干燥，得到浸渍有铒化合物，铝化合物和磷化合物的烟炱预制品。

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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