公开(公告)号：US5570442A

公开(公告)日：1996-10-29

申请号：US154038

申请日：1993-11-18

申请人： Mitsuzo Arii ,  Kuniaki Jinnai ,  Hisashi Ohwada ,  Yasunari Kawabata

发明人： Mitsuzo Arii ,  Kuniaki Jinnai ,  Hisashi Ohwada ,  Yasunari Kawabata

IPC分类号： G02B6/122 ,  G02B6/125 ,  G02B6/28 ,  G02B6/26

CPC分类号： G02B6/1221 ,  G02B6/125 ,  G02B6/2808

摘要： The present invention is an optical device including an optical circuit in which a plurality of branched optical waveguides are connected to a light receiving side and a light ejecting side of a main optical waveguide which mixes the entering light. The branched optical waveguides include a beginning and a terminal end. The terminal end is connected to an optical fiber and the beginning end is connected to the main optical waveguide. At least one of the branched optical waveguides has a slope or taper construction which is wider at the terminal end than at the beginning end, in order to improve lost variance and to reduce loss of light signals. The present invention also provides a method for manufacturing the above-described optical device to be used in optical local networks and optical instrumentation control systems.

摘要翻译： 本发明是一种光学装置，其包括多个分支光波导连接到混合入射光的主光波导的光接收侧和光弹射侧的光电路。 分支光波导包括起始端和末端。 终端连接到光纤，起始端连接到主光波导。 分支光波导中的至少一个具有在终端比起始端更宽的斜率或锥形结构，以便改善丢失的方差并减少光信号的损失。 本发明还提供一种制造用于光学局部网络和光学仪器控制系统的上述光学装置的方法。

公开(公告)号：US5091986A

公开(公告)日：1992-02-25

申请号：US610680

申请日：1990-11-08

申请人： Mitsuzo Arii ,  Norio Takeda ,  Shigeo Kataoka ,  Osamu Kondoh ,  Kuniaki Jinnai ,  Hisashi Ohwada ,  Tomoko Kondoh

发明人： Mitsuzo Arii ,  Norio Takeda ,  Shigeo Kataoka ,  Osamu Kondoh ,  Kuniaki Jinnai ,  Hisashi Ohwada ,  Tomoko Kondoh

IPC分类号： G02B6/122 ,  G02B6/125 ,  G02B6/28 ,  G02B6/30

CPC分类号： G02B6/30 ,  G02B6/125 ,  G02B6/2808

摘要： An optical divider for multimode optical fibers of graded-index (GI) type composed of an optical input section for securing input optical fiber, a branching section including an optical waveguide having rectangular sectional shapes irrespective of a kind of material or a method of fabricating the same and consists of a main optical waveguide and branch waveguide, and an optical output section for securing an array of output optical fibers, wherein the main optical waveguide having a width D and a length M is divided contiguously into N branch optical waveguides, preferably three or more having uniform width W, the optical waveguide having substantially uniform core thickness T is specifically related with the core diameter K of the otpical fiber to fufull the following relational formulas:0.7.ltoreq.T/K.ltoreq.0.85 (1)0.35.ltoreq.W/K.ltoreq.0.80 (2)15.ltoreq.M/D.ltoreq.70 (3)D=N.times.W (4)for reducing a coupling loss between the optical fibers and the optical waveguide and improved a loss variance by selecting the value of M/D to the value within the range as specified above or more preferably within a range of 20.ltoreq.M/D.ltoreq.60.

公开(公告)号：US5970191A

公开(公告)日：1999-10-19

申请号：US827421

申请日：1997-03-27

申请人： Michio Oba ,  Yasunari Kawabata ,  Mitsuzo Arii ,  Kuniaki Jinnai ,  Nobuhiko Tsuji ,  Takeshi Kobayashi

发明人： Michio Oba ,  Yasunari Kawabata ,  Mitsuzo Arii ,  Kuniaki Jinnai ,  Nobuhiko Tsuji ,  Takeshi Kobayashi

IPC分类号： G02B6/38 ,  G02B6/122 ,  G02B6/125 ,  G02B6/13 ,  G02B6/28 ,  H04B10/2507 ,  H04B10/27 ,  H04B10/272 ,  G02B6/26

CPC分类号： G02B6/13 ,  G02B6/125 ,  G02B6/2808

摘要： A reflective type optical signal distributor comprising, in a housing (2), a plurality of optical input/output units (3) functioning as input and output terminals for an optical signal, an optical circuit assembly (6) for reflecting and separating the optical signal, and a plurality of guide optical fibers (8) for connecting the plurality of optical signals entering any one of the plurality of optical input/output units (3) and the optical circuit assembly (6), whereby an optical input/output units (3) is substantially equally distributed to all other ones of the plurality of optical input and output units (3), the optical circuit assembly (6) comprising an optical circuit in which a plurality of independent branched optical waveguides (22) merge into a single main optical waveguide (21), a reflective surface (4) formed at an end of the main waveguide (21), and the plurality of guide optical fibers (8) being connected to the corresponding plurality of independent branched optical waveguides (22).

摘要翻译： 一种反射型光信号分配器，在壳体（2）中包括用作光信号的输入和输出端的多个光输入/输出单元（3），用于反射和分离光学信号的光电路组件 信号，以及用于连接进入多个光输入/输出单元（3）和光电路组件（6）中的任一个的多个光信号的多个引导光纤（8），由此光输入/输出单元 （3）基本上均等地分配给多个光输入和输出单元（3）中的所有其它光输入和输出单元（3），光电路组件（6）包括光电路，其中多个独立的分支光波导（22）合并成 单主光波导（21），形成在主波导（21）的端部的反射表面（4），并且多个引导光纤（8）连接到相应的多个独立的分支光波 uides（22）。

公开(公告)号：US5343545A

公开(公告)日：1994-08-30

申请号：US90955

申请日：1993-07-13

申请人： Takeshi Ota ,  Mitsuzo Arii ,  Masukazu Hirata ,  Yasunari Kawabata

发明人： Takeshi Ota ,  Mitsuzo Arii ,  Masukazu Hirata ,  Yasunari Kawabata

IPC分类号： G02B6/125 ,  G02B6/28 ,  H04B10/272 ,  G02B6/26

CPC分类号： G02B6/2804 ,  G02B6/125

摘要： A multi-terminal star coupler having a circuit constituted by optical waveguides integrated on a substrate. For example, in a four-terminal star coupler, four uniformly three-dividing optical couplers are provided for branching from any one terminal to the other three terminals, and an optical waveguide from any one terminal to another terminal not adjacent to the one terminal includes an intersection portion where the optical waveguide intersects another optical waveguide lead from another terminal adjacent to the one terminal.

摘要翻译： 一种具有由集成在基板上的光波导构成的电路的多端子星形耦合器。 例如，在四端子星形耦合器中，提供了四个均匀的三分频光耦合器，用于从任一个端子到另外三个端子分支，并且从任何一个端子到另一个不与一个端子相邻的端子的光波导包括 光波导与另一个与该一个端子相邻的端子与另一个光波导引线相交的交叉部分。

公开(公告)号：US5058978A

公开(公告)日：1991-10-22

申请号：US600939

申请日：1990-10-22

申请人： Osamu Kondoh ,  Mitsuzo Arii ,  Tohru Nakajima ,  Yasunari Kawabata

发明人： Osamu Kondoh ,  Mitsuzo Arii ,  Tohru Nakajima ,  Yasunari Kawabata

IPC分类号： G02B6/122 ,  G02B6/125 ,  G02B6/26 ,  G02B6/28 ,  G02B6/30

CPC分类号： G02B6/2804 ,  G02B6/125 ,  G02B6/262 ,  G02B6/2808 ,  G02B6/30

摘要： A main optical waveguide portion and/or branching optical waveguide portions of the optical waveguide is tapered in such a way so as to expand towards the output side for reducing a coupling loss due to mismatching of numerical apertures N.A. between optical fibers and the optical waveguide, wherein the light entering the optical waveguide at an angle determined by the numerical aperture N.A. of the optical fiber gradually reduces its angle of incidence to an interface of the core and cladding as it passes by a portion where the taper is provided and when the light reaches the output side of the optical fiber, the numerical aperture N.A. thereof is effectively reduced to a value which is lower than the numerical aperture N.A. determined by a difference of refractive-indices in the optical waveguide. By making the numerical aperture N.A. of the optical waveguide a little greater than that of the optical fiber, it is possible to reduce the loss at the input side as well as the loss at the output side simultaneously, and further, the taper need not necessarily be a straight taper but a curved taper also can be used.

公开(公告)号：US5448667A

公开(公告)日：1995-09-05

申请号：US112794

申请日：1993-08-27

申请人： Mitsuzo Arii ,  Masukazu Hirata ,  Hidenori Kanjo

发明人： Mitsuzo Arii ,  Masukazu Hirata ,  Hidenori Kanjo

IPC分类号： G02B6/122 ,  G02B6/125 ,  G02B6/138 ,  G02B6/30 ,  G02B6/36 ,  G02B6/38

CPC分类号： G02B6/3873 ,  G02B6/125 ,  G02B6/138 ,  G02B6/30 ,  G02B6/3846

摘要： Optical device to optically connect an outside optical fiber with an optical waveguide through the connecting medium of an optical fiber with ferrule located within the hole of the optical receptacle that is fixed at the optical waveguide. The optical waveguide and the outside optical connectors are optically connected with high accuracy and small optical loss. Because no damage is caused to the optical waveguide by attachment or removal of the optical connectors, the optical performance of the optical device is not reduced.

摘要翻译： 光学装置，通过光纤的连接介质将外部光纤与光波导光学连接，该光纤具有位于固定在光波导处的光学插座的孔内的套圈。 光波导和外部光连接器以高精度和小的光损耗光学连接。 由于通过附接或移除光连接器不会对光波导造成损害，所以光器件的光学性能不会降低。

公开(公告)号：US5160358A

公开(公告)日：1992-11-03

申请号：US692457

申请日：1991-04-17

申请人： Osamu Kondo ,  Masukazu Hirata ,  Mitsuzo Arii

发明人： Osamu Kondo ,  Masukazu Hirata ,  Mitsuzo Arii

IPC分类号： C03B19/12 ,  C03B37/016 ,  C03C23/00

CPC分类号： C03B37/016 ,  C03B19/12 ,  C03C23/0095 ,  C03B2201/10 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/40 ,  C03B2201/42 ,  C03B2201/54 ,  C03B2203/22 ,  Y02P40/57 ,  Y10S65/901

摘要： A process for easily producing a silica glass plate having an internal refractive index distribution suitable for a planar optical waveguide involves carrying out the following steps.(a) A porous silica gel plate produced by a sol-gel method is kept in a reactor, the pressure of which is reduced to a substantially vacuum state.(b) Germanium tetrachloride gas is introduced into the reactor at a partial pressure appropriate to establish an absorption equilibrium between a desired concentration of germanium tetrachloride in said porous silica gel plate and a partial pressure of germanium tetrachloride introduced.(c) The partial pressure of germanium tetrachloride in step (b) is reduced so as to desorb germanium tetrachloride from the surface of the porous silica gel plate.(d) The porous silica gel plate having a described concentration distribution is brought into contact with water within or outside the reactor so as to fix the distribution.(e) The porous silica gel plate is calcined at a temperature of not less than 900.degree. C. to render it nonporous.

摘要翻译： 用于容易地生产具有适合于平面光波导的内部折射率分布的石英玻璃板的方法包括进行以下步骤。 （a）将通过溶胶 - 凝胶法制备的多孔硅胶板保持在反应器中，其压力降低至基本上真空状态。 （b）将四氯化锗气体以适于建立所述多孔硅胶板中所需浓度的四氯化锗与引入的四氯化锗的分压之间的吸收平衡的分压引入反应器。 （c）步骤（b）中的四氯化锗的分压降低，从而从多孔硅胶板的表面解吸四氯化锗。 （d）具有所述浓度分布的多孔硅胶板与反应器内部或外部的水接触以固定分布。 （e）多孔硅胶板在不低于900℃的温度下煅烧，使其无孔。

公开(公告)号：US5493222A

公开(公告)日：1996-02-20

申请号：US56881

申请日：1993-05-05

申请人： Kazushi Shirai ,  Toshihiro Shinbo ,  Norio Takeda ,  Mitsuzo Arii

发明人： Kazushi Shirai ,  Toshihiro Shinbo ,  Norio Takeda ,  Mitsuzo Arii

IPC分类号： G01P3/36 ,  G01P3/486 ,  G01R33/032

CPC分类号： G01R33/0322 ,  G01P3/36 ,  G01P3/486

摘要： A reflection type magnetooptic sensor head. The respective structural elements are aligned in the order of a light source, light inputting/outputting path, polarizer, Faraday rotator, and reflecting film. The Faraday rotator is made of a (111) bismuth-substituted iron garnet single crystal film. The Faraday rotator is positioned such that the optical axis of the light incident upon the surface of the Faraday rotator makes an angle of 10 to 70 degrees with an axis normal to the surface of the Faraday rotator. The sensor head may further include two identical rectangular prisms positioned such that the Faraday rotator is sandwiched between the slanting surfaces of the prisms.

摘要翻译： 反射型磁光传感头。 各个结构元件按光源，光输入/输出路径，偏振器，法拉第旋转器和反射膜的顺序排列。 法拉第旋转器由（111）铋取代的铁石榴石单晶膜制成。 法拉第旋转器的定位使得入射到法拉第旋转器表面的光的光轴与法拉第转子表面垂直的轴形成10度至70度的角度。 传感器头还可以包括两个相同的矩形棱镜，这些棱镜定位成使得法拉第旋转器夹在棱镜的倾斜表面之间。

公开(公告)号：US5463316A

公开(公告)日：1995-10-31

申请号：US70684

申请日：1993-06-02

申请人： Kazushi Shirai ,  Toshihiro Shinbo ,  Norio Takeda ,  Mitsuzo Arii

发明人： Kazushi Shirai ,  Toshihiro Shinbo ,  Norio Takeda ,  Mitsuzo Arii

IPC分类号： G01R33/032 ,  G01R33/02

CPC分类号： G01R33/0322

摘要： A reflection type magnetooptic sensor head is disclosed. The respective structural elements are aligned following a light source in the order of a light inputting/outputting path, polarizer, Faraday rotator, and reflecting mirror. The Faraday rotator is made of a (111) bismuth-substituted iron garnet single crystal film having [111] axis at an angle of 5-60 degrees with an axis normal to the film surface. The reflecting mirror is positioned such that a light incident upon the reflecting mirror is substantially normal to the surface of the reflecting mirror.

摘要翻译： 公开了一种反射型磁光传感器头。 各个结构元件按照光输入/输出路径，偏振器，法拉第旋转器和反射镜的顺序在光源之后对准。 法拉第旋转器由（111）铋取代的铁石榴石单晶膜制成，其具有垂直于膜表面的轴线，角度为5-60度的[111]轴。 反射镜被定位成使得入射在反射镜上的光基本上垂直于反射镜的表面。

公开(公告)号：US4932760A

公开(公告)日：1990-06-12

申请号：US314927

申请日：1989-02-24

申请人： Mitsuzo Arii ,  Norio Takeda ,  Yasunori Tagami ,  Kazushi Shirai

发明人： Mitsuzo Arii ,  Norio Takeda ,  Yasunori Tagami ,  Kazushi Shirai

IPC分类号： G02F1/09 ,  C30B29/28 ,  H01F10/24

CPC分类号： H01F10/245 ,  Y10T428/12465 ,  Y10T428/12861 ,  Y10T428/12951

摘要： This invention provides a magneto-optic garnet grown by liquid phase epitaxy on a nonmagnetic garnet substrate and having a composition of the following formula (1)Ho.sub.x Tb.sub.y Bi.sub.3-x-y Fe.sub.5 O.sub.12 (1)wherein 0.3.ltoreq.y/x.ltoreq.1.0 and x+y

摘要翻译： 本发明提供了一种在非磁性石榴石衬底上通过液相外延生长并具有下式（1）HoxTbB3-x-yFe5O12（1）的组成的磁光石榴石，其中0.3≤y/x≤1.0和 x + y <3.0。 根据本发明，提供了一种用作光隔离器，光循环器等的法拉第旋转器的磁光石榴石，利用法拉第效应，其具有非常大的法拉第旋转系数，晶格常数与 非磁性石榴石基材，呈现镜面而不引起膜缺陷（或所谓的凹坑），并且具有较小的温度依赖性。