专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US5260816A Optical amplifier with erbium-doped fiber 失效
标题翻译：具有掺铒光纤的光放大器
公开(公告)号：US5260816A
公开(公告)日：1993-11-09
申请号：US949788
申请日：1992-09-22
申请人： Noboru Edagawa , Yoshihiro Yoshida , Minoru Taya , Kazuo Koya
发明人： Noboru Edagawa , Yoshihiro Yoshida , Minoru Taya , Kazuo Koya
IPC分类号： C03B13/04 , C03C13/04 , G02B6/00 , G02B6/02 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/10 , H01S3/30
CPC分类号： H01S3/06708
摘要： The optical amplification gain of an optical amplifier consisting of an optical amplifier unit and a single-mode erbium-doped fiber can be optimized when the length of the fiber L in meters and the optical absorption in dB/meter of the fiber per unit length at a wavelength of 1.53 .mu.m satisfy the relationship that L.times.y is in the range from 70 to 170 dB by appropriately selecting the doping level of the glass with erbium and the length of the fiber.

12. 发明授权

US5404415A Optical fiber coupler and method for preparing same 失效
标题翻译：光纤耦合器及其制备方法
公开(公告)号：US5404415A
公开(公告)日：1995-04-04
申请号：US186296
申请日：1994-01-25
申请人： Tsuneo Mori , Kazuo Koya
发明人： Tsuneo Mori , Kazuo Koya
IPC分类号： G02B6/28 , G02B6/26
CPC分类号： G02B6/2835
摘要： In an optical fiber coupler comprising a plurality of optical fibers bundled together and a light-coupling portion which is formed by partially fusing and drawing these bundled fibers and which permits branching of light rays incident upon one of these fibers into the other fibers at a predetermined branching ratio, the optical fiber coupler has a difference between the branching ratio thereof determined immediately after the fusing and drawing operation and that determined after accommodating the coupler in a protective case and then adhering it to the case, equal to or less than 5%. Such an optical fiber coupler can be produced by bundling a plurality of optical fibers 1 and 2, fusing and drawing a part of the bundled optical fibers with heating, fixing the relative positions of these optical fibers 1 and 2 immediately after the fusing and drawing operation and then accommodating in and fixing to a protective case. If the foregoing difference in the branching ratio is not more than 5%, the difference between the branching ratios determined after the fusing and drawing operation and determined after the coupler is subjected to a thermal shock test is reduced to a level of not more than 2%. Therefore, the coupler does not suffer from any substantial change in properties even after the thermal shock test and thus can practically be used with high reliability.
摘要翻译：在包括多个捆扎在一起的光纤的光纤耦合器和通过部分地熔合和拉伸这些捆扎的光纤而形成的光耦合部分，并且允许以预定的方式将入射到这些光纤之一的光线分支到另一个光纤中光纤耦合器在定影和拉伸操作之后确定的分支比率之间的差异以及将耦合器容纳在保护壳体中之后确定的分支比率之间的差异，然后将其粘附到壳体上等于或小于5％。这样的光纤耦合器可以通过捆扎多根光纤1和2，通过加热对部分捆扎的光纤进行熔合和拉制来制造，在定影和拉伸操作之后立即固定这些光纤1和2的相对位置然后容纳并固定到保护壳。如果上述分支比的差异不大于5％，则在熔融和拉伸操作之后确定的并且在耦合器之后确定的分支比之间的差异比进行热冲击试验之后，降低至不超过2 ％。因此，即使在热冲击试验之后，耦合器也不会遭受特性的任何显着变化，因此实际上可以高度可靠地使用。

13. 发明授权

US4772644A Method for resin encapsulation of a semiconductor device and a resin composition therefor 失效
标题翻译：半导体装置的树脂封装方法及其树脂组合物
公开(公告)号：US4772644A
公开(公告)日：1988-09-20
申请号：US459220
申请日：1983-01-19
申请人： Kunio Itoh , Kiyoshi Yokokawa , Tetuo Yoshida , Kazuo Koya
发明人： Kunio Itoh , Kiyoshi Yokokawa , Tetuo Yoshida , Kazuo Koya
IPC分类号： H01L23/29 , C01B33/12 , C01B33/18 , C08K3/36 , H01L23/31
CPC分类号： C08K3/36 , C01B33/12 , C01B33/183 , C01P2004/61 , C01P2004/62
摘要： While high-performance semiconductor devices encapsulated with a resin composition are subject to the problem of wrong operation due to the alpha-particles emitted from the trace amounts of radioactive impurities, e.g. uranium and thorium, contained in the silica filler incorporated in the resin composition, a means for solving this problem is provided by use of a silicon dioxide powder obtained by the pyrolysis of a volatilizable silicon compound free from radioactive impurities in an oxidizing condition and having an average particle diameter in the range from 0.5 to 100 .mu.m in place of the conventional silica fillers.
摘要翻译：虽然用树脂组合物封装的高性能半导体器件由于从微量的放射性杂质发射的α粒子，例如，包含在树脂组合物中的二氧化硅填料中的铀和钍通过使用通过在氧化条件下热解不含放射性杂质的挥发性硅化合物而获得的二氧化硅粉末来提供解决该问题的方法，并且具有平均粒径在0.5至100μm的范围内，代替常规的二氧化硅填料。

14. 发明授权

US4690504A Quartz glass-made optical fibers and a method for the preparation thereof 失效
标题翻译：石英玻璃制造的光纤及其制备方法
公开(公告)号：US4690504A
公开(公告)日：1987-09-01
申请号：US739874
申请日：1985-05-31
申请人： Kiyoshi Yokokawa , Kazuo Koya
发明人： Kiyoshi Yokokawa , Kazuo Koya
IPC分类号： C03B37/014 , C03C13/04 , G02B6/00 , G02B6/02
CPC分类号： C03C13/045 , C03B37/014 , C03B37/01446 , G02B6/02 , C03B2201/12 , C03B2203/22
摘要： The quartz glass-made optical fiber of the invention is formed of the core portion and the cladding portion each doped with fluorine to decrease the refractive index, the concentration of fluorine being higher in the cladding than in the core, so that the core portion has a refractive index lower by 0.01 to 0.1% than that of an undoped fused quartz glass and the cladding portion has a refractive index lower by at least 0.2% than that of the core portion. By virtue of the fluorine doping throughout, the optical fiber is free from the drawbacks due to the oxygen deficiency in the fused quartz glass and the light transmission performance thereof is remarkably stable. A method for the preparation of the optical fiber is proposed including the steps of silica particle deposition by the flame hydrolysis of a silicon compound, doping with a fluorine compound and vitrification for each of the core and the cladding portions.
摘要翻译：本发明的石英玻璃制造的光纤由芯部和包层部分形成，每个芯部分和包层部分均掺杂有氟以降低折射率，在包层中氟的浓度高于芯中的浓度，使得芯部具有折射率比未掺杂的熔融石英玻璃的折射率低0.01〜0.1％，折射率比芯部的折射率低0.2％以上。由于整个氟掺杂，光纤没有由于熔融石英玻璃中的氧缺乏而导致的缺点，并且其光透射性能非常稳定。提出了一种制备光纤的方法，包括以下步骤：通过硅化合物的火焰水解沉积二氧化硅颗粒，掺杂氟化合物，并对每个芯和包层部分进行玻璃化。

15. 发明授权

US5420950A Wide wavelength range-optical fiber coupler and method for the preparation thereof 失效
标题翻译：宽波长范围光纤耦合器及其制备方法
公开(公告)号：US5420950A
公开(公告)日：1995-05-30
申请号：US200226
申请日：1994-02-23
申请人： Kazuo Koya , Tsuneo Mori
发明人： Kazuo Koya , Tsuneo Mori
IPC分类号： G02B6/28 , G02B6/26
CPC分类号： G02B6/2835
摘要： A wide wavelength range-coupler whose light-branching ratio shows low wavelength-dependency, which is provided with a well-shaped light-coupling portion and excellent optical properties and which can easily be connected to other optical fibers as well as a method for the production thereof are herein provided. The light-coupling portion 3 of the optical fiber coupler is formed by fusing and orientating a plurality of single mode optical fibers 1 and 2 partially arranged parallel to one another and these optical fibers 1 and 2 have cores 1a and 2a which are different from one another in diameter, but are substantially identical in the outer diameter of the clad and in the mode field diameter. Each single mode optical fiber as a material for the coupler has a core diameter and a mode field diameter which are correlated through a quadratic function and therefore, there can be selected two optical fibers 1 and 2 which are identical to one another in the mode field diameter, but differ in the core diameter.
摘要翻译：光分支比低波长依赖性的宽波长范围耦合器，其具有良好的光耦合部分和优异的光学性质，并且可以容易地连接到其他光纤，以及用于在此提供其生产。光纤耦合器的光耦合部分3通过将多个单模光纤1和2彼此并联布置而定向并形成，这些光纤1和2具有不同于一个的芯1a和2a 另一个直径，但是在包层的外径和模场直径上基本相同。作为耦合器的材料的每个单模光纤具有通过二次函数相关的芯直径和模场直径，因此可以选择在模场中彼此相同的两个光纤1和2 直径，但芯径不同。

16. 发明授权

US5408309A Apparatus and method for inspecting elliplicity and eccentricity of optical fiber preforms 失效
标题翻译：用于检查光纤预制棒的椭圆度和偏心度的装置和方法
公开(公告)号：US5408309A
公开(公告)日：1995-04-18
申请号：US111664
申请日：1993-08-25
申请人： Tadakatsu Shimada , Kazuo Koya
发明人： Tadakatsu Shimada , Kazuo Koya
IPC分类号： G01B11/24 , G02B6/38 , G01N21/84
CPC分类号： G01B11/2433 , G02B6/3843
摘要： The inspection apparatus for determination of the degree of ellipticity of an optical fiber perform and the eccentricity of the core thereof comprises optical system 12 for projecting a light beam from light source 10 through optical fiber preform 1 to video camera 11; and signal processing circuit 17 for converting the image of the optical fiber preform 1 photographed by the video camera 11 into a numerical value and the apparatus is connected to driving device 14 for rotating the optical fiber preform 1 traversing the optical path of the optical system 12 around the central axis of the preform 1. The curve showing the external shape of the optical fiber preform 1 is represented by the formula: v=(a-b)Sin2.theta. and the line showing the external shape of the core represented by the formula: w=nU Sin.theta.+(n-1)(a-b)Sin(2.theta.+.alpha.). The eccentricity of the core can be calculated from these values.
摘要翻译：用于确定光纤的椭圆度的检查装置，其芯的偏心度包括用于将来自光源10的光束通过光纤预制棒1投影到摄像机11的光学系统12; 以及用于将由摄像机11拍摄的光纤预制棒1的图像转换为数值的信号处理电路17，并且该装置连接到驱动装置14，用于旋转穿过光学系统12的光路的光纤预制棒1 示出了光纤预制棒1的外形的曲线由下式表示：v =（ab）Sin2θ，表示由式W表示的芯的外形的线 = nUSinθ+（n-1）（ab）Sin（2θ+α）。核心的偏心度可以从这些值计算出来。

17. 发明授权

US5329602A Optical fiber coupler 失效
标题翻译：光纤耦合器
公开(公告)号：US5329602A
公开(公告)日：1994-07-12
申请号：US69698
申请日：1993-05-28
申请人： Tsuneo Mori , Kazuo Koya
发明人： Tsuneo Mori , Kazuo Koya
IPC分类号： G02B6/28 , G02B6/287 , G72B6/26
CPC分类号： G02B6/2835
摘要： An improvement is proposed for decreasing the variation in the coupling ratio of an optical fiber coupler after a heat shock test. In an optical fiber coupler which is an elongated intergral body formed by fusing a plural number of optical fibers side-by-side consisting of two straightly columnar parts and a biconical part therebetween formed by drawing and adhesively bonded to a reinforcing base with a coating layer of an adhesive therebetween, the improvement can be achieved by limiting the zone where the coating layer of an adhesive to the surface of each of the straightly columnar parts within a range from the boundary between the straightly columnar part and the biconical part to a point 8 mm apart from the boundary.
摘要翻译：提出了在热冲击试验后降低光纤耦合器的耦合比的变化的改进。在光纤耦合器中，该光纤耦合器是通过将由两个直柱部分并排的多个光纤并排而形成的细长整体形成的，并且通过拉伸粘合而形成的双锥形部分，之间的粘合剂，可以通过将粘合剂的涂层在直线柱部分和双锥形部分之间的边界的范围内限定到每个直柱部分的表面的区域到达点8来实现改进 mm以外的边界。

18. 发明授权

US4874416A Base material of optical fibers and a method for the preparation thereof 失效
标题翻译：光纤基材及其制备方法
公开(公告)号：US4874416A
公开(公告)日：1989-10-17
申请号：US188118
申请日：1988-04-25
申请人： Kiyoshi Yokokawa , Kazuo Koya
发明人： Kiyoshi Yokokawa , Kazuo Koya
IPC分类号： G02B6/00 , C03B8/04 , C03B19/14 , C03B20/00 , C03B37/012 , C03B37/014 , C03B37/018 , G02B6/036
CPC分类号： C03B37/01493 , C03B37/014
摘要： In place of the conventional rod-in-tube method, a novel method is proposed for the preparation of a high-quality base material of quartz glass for optical fibers according to which a glassy rod composed of the core portion of a larger refractive index and the first cladding layer of a smaller refractive index is first prepared by silica soot deposition by the flame hydrolysis of a gaseous silicon compound followed by dehydration and vitrification, and then the glassy rod is covered with a layer of further silica soot deposition which is subsequently converted to the second cladding layer by vitrification. The inventive base material for optical fibers is excellent in the geometry relative to the diameter of the core portion and thickness of the cladding layer as well as concentricity of the core and the cladding.
摘要翻译：代替传统的棒管式方法，提出了一种制备光纤石英玻璃的高质量基材的新方法，根据该方法，由折射率较大的芯部分组成的玻璃棒和首先通过二氧化硅烟灰沉积通过气态硅化合物的火焰水解然后进行脱水和玻璃化来制备较小折射率的第一包层，然后玻璃棒被另外的二氧化硅烟灰沉积层覆盖，随后将其转化通过玻璃化到第二包层。本发明的光纤基材相对于芯部的直径和包层的厚度以及芯和包层的同心度的几何形状优异。

19. 发明授权

US5246475A Method for preparing a fused silica glass body co-doped with a rare earth element and aluminum 失效
标题翻译：制备与稀土元素和铝共掺的熔融石英玻璃体的方法
公开(公告)号：US5246475A
公开(公告)日：1993-09-21
申请号：US858045
申请日：1992-03-26
申请人： Noboru Edagawa , Yoshihiro Yoshida , Minoru Taya , Tadakatsi Shimada , Kazuo Koya
发明人： Noboru Edagawa , Yoshihiro Yoshida , Minoru Taya , Tadakatsi Shimada , Kazuo Koya
IPC分类号： C03B20/00 , C03B8/04 , C03B37/014 , C03C3/06 , G02B6/00 , G02F1/35
CPC分类号： C03C23/0095 , C03B37/01413 , C03B37/01433 , C03C3/06 , C03B2201/36 , C03B2207/90 , C03C2201/31 , C03C2201/3423 , C03C2201/3435 , C03C2201/3447 , C03C2201/3476 , C03C2201/36 , C03C2203/40 , C03C2203/44 , Y10S65/901
摘要： A novel method is proposed for the preparation of a transparent fused silica glass body co-doped with a rare earth element and aluminum each in a high uniformity of the dopant distribution. The method comprises the steps of: (a) flame-hydrolyzing a silicon compound and an aluminum compound in an oxyhydrogen flame to form a porous silicon oxide body containing aluminum; (b) soaking the porous body having a specified bulk density with a solution of a rare earth compound; (c) drying the solution-soaked porous body; and (d) sintering and vitrifying the dried porous body into a transparent glass body.
摘要翻译：提出了一种制备掺杂有稀土元素和铝的透明熔融石英玻璃体的新颖方法，每个都具有高均匀度的掺杂剂分布。该方法包括以下步骤：（a）在氢氧焰中使硅化合物和铝化合物火焰水解，形成含有铝的多孔氧化硅体; （b）用稀土化合物溶液浸泡具有特定体积密度的多孔体; （c）干燥溶液浸泡的多孔体; 和（d）将干燥的多孔体烧结并玻璃化成透明玻璃体。

20. 发明授权

US5078488A Method and apparatus for determining refractive index distribution 失效
$Method and apparatus for determining refractive index distribution$
标题翻译：用于确定折射率分布的方法和装置
公开(公告)号：US5078488A
公开(公告)日：1992-01-07
申请号：US509909
申请日：1990-04-16
申请人： Ichirou Yamaguchi , Tadakatsu Shimada , Kazuo Koya , Toshiyuki Suzuki
发明人： Ichirou Yamaguchi , Tadakatsu Shimada , Kazuo Koya , Toshiyuki Suzuki
IPC分类号： G01N21/41
CPC分类号： G01N21/412
摘要： Determination of refractive index distribution is utilized, including data of all the positions of diffraction images on a plane, from the incident ray dispersed by the cylindrical glass rod when the ray passes therethrough. A linear approximation thereof is performed; and the angle of the outgoing ray is calculated using the intersection of the approximate lineation and a plane through which the incident ray passes. Much data can be employed to calculated the angle of the outgoing ray. This substantially improves the accuracy of measurement of the angle of the outgoing ray and further this makes it possible to determine the angle even if no image of the outgoing ray is present on the plane throgh which the incident ray passes.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式