公开(公告)号：US06530698B1

公开(公告)日：2003-03-11

申请号：US09612232

申请日：2000-07-07

申请人： Yoshiki Kuhara ,  Hiromi Nakanishi ,  Takeshi Okada

发明人： Yoshiki Kuhara ,  Hiromi Nakanishi ,  Takeshi Okada

IPC分类号： G02B600

CPC分类号： G02B6/4249 ,  G02B6/29361 ,  G02B6/42 ,  G02B6/4207 ,  G02B6/421 ,  G02B6/4212 ,  G02B6/4214 ,  G02B6/4215 ,  G02B6/4243 ,  G02B6/4253 ,  G02B6/4255 ,  G02B6/4265

摘要： A device including a fiber/waveguide and a optical device (PD, LD or so). The end of an optical fiber or a light waveguide is cut slantingly. A transparent resin of a refractive index akin to the fiber/waveguide encloses the fiber/waveguide, the optical device and a space between them. The slanting end cutting and the transparent resin cooperate with each other to annihilate the reflection, returning light perfectly without reducing the coupling coefficient.

摘要翻译： 包括光纤/波导和光学装置（PD，LD等）的装置。 光纤或光波导的端部倾斜地切割。 折射率类似于光纤/波导的透明树脂包围光纤/波导，光学器件和它们之间的空间。 倾斜端切割和透明树脂相互配合以消除反射，完美地返回光而不降低耦合系数。

公开(公告)号：US06513993B1

公开(公告)日：2003-02-04

申请号：US09856899

申请日：2001-05-29

申请人： Hiromi Nakanishi ,  Yoshiki Kuhara

发明人： Hiromi Nakanishi ,  Yoshiki Kuhara

IPC分类号： G02B636

CPC分类号： G02B6/4246 ,  G02B6/3652 ,  G02B6/3696 ,  G02B6/4201 ,  G02B6/423 ,  G02B6/4236 ,  G02B6/4239 ,  G02B6/4243 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2924/10253 ,  H01L2924/00014 ,  H01L2924/00

摘要： The invention reduces the costs of a surface mounting type receiver module, transmitter module, and transmitter and receiver module. In an optical communication device comprising an optical fiber, optical parts, and a substrate for optical coupling, the coupling portion between the end portion of the optical fiber and the optical parts is fixed by a semiconductor substrate having a V groove made by etching, and a portion of the optical fiber other than the end portion is fixed by a retaining substrate which is different from the semiconductor substrate.

摘要翻译： 本发明降低了表面安装型接收器模块，发射器模块和发射器和接收器模块的成本。在包括光纤，光学部件和用于光学耦合的基板的光学通信设备中，耦合部分 光纤和光学部件由具有通过蚀刻形成的V槽的半导体基板固定，并且除端部之外的光纤的一部分由与半导体基板不同的保持基板固定。

公开(公告)号：US06374021B1

公开(公告)日：2002-04-16

申请号：US09503449

申请日：2000-02-14

申请人： Hiromi Nakanishi ,  Yoshiki Kuhara

发明人： Hiromi Nakanishi ,  Yoshiki Kuhara

IPC分类号： G02B630

CPC分类号： G02B6/4246 ,  G02B6/29361

摘要： The PD/LD module of the present invention comprises a platform, a straight light guide (waveguide) formed on the platform for guiding transmitting light and receiving light, a light source (LD or LED) positioned at an end of the light guide for emitting transmitting light, a PD mounted just above the light guide for detecting receiving signals and a filter sloping upward on the way of the light guide for reflecting receiving light to the photodiode (PD) and passing transmitting light.

摘要翻译： 本发明的PD / LD模块包括平台，形成在平台上的用于引导传输光和接收光的平直光导（波导），位于光导的端部处的发光（LD或LED），用于发射 传输光，刚刚在光导上方安装的用于检测接收信号的PD，以及在光导路径上向上倾斜的滤光器，用于将接收光反射到光电二极管（PD）并通过透射光。

公开(公告)号：US5963694A

公开(公告)日：1999-10-05

申请号：US18013

申请日：1998-02-03

申请人： Yasushi Fujimura ,  Yoshiki Kuhara

发明人： Yasushi Fujimura ,  Yoshiki Kuhara

IPC分类号： G02B6/42 ,  G02B6/32

CPC分类号： G02B6/4206 ,  G02B6/4207

摘要： This invention provides an analog PD module useful for a large number of channels and a digital PD module useful for a large power signal input because of its reduced distortion. The PD chip is fixed at a spot deviating by L tan .alpha. from the lens center in the direction of a projection of a vector TS from the highest edge (T) to the lowest edge (S), where L is the distance between the lens center and the PD. The fiber should deviate in the contrary direction. The orientation enables a beam emanating from the fiber end to pass the center of the lens and reach the PD by spreading on a direct line.

摘要翻译： 本发明提供了一种可用于大量信道的模拟PD模块和用于大功率信号输入的数字PD模块，因为其减小的失真。 PD芯片固定在从最高边缘（T）到最下边缘（S）的向量TS的投影方向上从透镜中心偏离Ltanα的点，其中L是透镜之间的距离 中心和PD。 纤维应该偏离相反的方向。 该方向使得从光纤端发出的光束通过透镜的中心并通过在直线上扩展而到达PD。

公开(公告)号：US5412229A

公开(公告)日：1995-05-02

申请号：US159577

申请日：1993-12-01

申请人： Yoshiki Kuhara ,  Hideaki Koseki ,  Hisato Michikoshi ,  Ichiro Tonai

发明人： Yoshiki Kuhara ,  Hideaki Koseki ,  Hisato Michikoshi ,  Ichiro Tonai

IPC分类号： G02B6/42 ,  H01L31/0216 ,  H01L31/0352 ,  H01L31/105 ,  H01L27/14 ,  H01L33/00

CPC分类号： G02B6/4202 ,  G02B6/4207 ,  H01L31/02164 ,  H01L31/03529 ,  H01L31/105 ,  Y02E10/50

摘要： A semiconductor light detecting device in which a housing with an optical fiber is inserted in is secured to a header with a photodiode chip mounted on integral therewith, and a light detecting surface of the photodiode chip is opposed to a light emitting surface of the optical fiber, the photodiode chip having a pn junction, the first region is surrounded by a second region of the second conductivity type formed at a portion of the semiconductor layer. The second region has the same or larger depth as or than that of the first region. Thus, even if a light is directed to the outside of the photo-sensing region, extra charges into the photo-sensing region is prevented. As a result, no optical lens system is necessary, and if an optical lens system is used, an inexpensive optical system may be used. Further, the device itself can be fabricated at low costs and easily.

摘要翻译： 将其中插入有光纤的外壳的半导体光检测装置固定到具有与其一体安装的光电二极管芯片的集管上，并且光电二极管芯片的光检测表面与光纤的发光表面相对 ，所述光电二极管芯片具有pn结，所述第一区域被形成在所述半导体层的一部分处的所述第二导电类型的第二区域包围。 第二区域具有与第一区域相同或更大的深度。 因此，即使光被引导到感光区域的外部，也防止了光敏区域中的额外电荷。 结果，不需要光学透镜系统，如果使用光学透镜系统，则可以使用廉价的光学系统。 此外，装置本身可以以低成本和容易地制造。

公开(公告)号：US4608535A

公开(公告)日：1986-08-26

申请号：US446395

申请日：1982-12-02

申请人： Kohji Tada ,  Yoshiki Kuhara ,  Masami Tatsumi ,  Tsutomu Mitsui

发明人： Kohji Tada ,  Yoshiki Kuhara ,  Masami Tatsumi ,  Tsutomu Mitsui

IPC分类号： G01R15/24 ,  G01R33/032 ,  G01R33/035 ,  G02F1/09 ,  G01R33/02 ,  G01R31/00 ,  G02B5/30

CPC分类号： G01R33/035 ,  G01R15/246 ,  G01R33/0322

摘要： A magnetic field and electric current measuring device which uses bismuth silicon oxide (Bi.sub.12 SiO.sub.20) or bismuth germanium oxide (Bi.sub.12 GeO.sub.20) as a Faraday cell, and which is so adapted that polarized light which enters the cell is passed back and forth through the cell along the optic axis thereof to cancel any change in optical rotatory power ascribable to a variation in temperature. A magnetic field applied in the direction of the optic axis of the Faraday cell is measured based on the angle of rotation of the polarization plane of the polarized light. The surface of the Faraday cell may be coated with a transparent and electrically conductive thin film to eliminate the effects of external electric fields.

摘要翻译： 使用铋氧化硅（Bi12SiO20）或氧化铋锗（Bi12GeO20）作为法拉第电池的磁场和电流测量装置，其适于使进入电池的偏振光沿着电池来回穿过电池 以防止归因于温度变化的光旋转功率的任何变化。 基于偏振光的偏振面的旋转角度来测量沿法拉第单元的光轴方向施加的磁场。 法拉第电池的表面可以涂覆有透明和导电的薄膜，以消除外部电场的影响。

公开(公告)号：US4563093A

公开(公告)日：1986-01-07

申请号：US452326

申请日：1982-12-22

申请人： Kohji Tada ,  Yoshiki Kuhara ,  Masami Tatsumi ,  Akihiko Kawakami

发明人： Kohji Tada ,  Yoshiki Kuhara ,  Masami Tatsumi ,  Akihiko Kawakami

IPC分类号： G01R15/24 ,  G01R29/08 ,  G01R29/12 ,  G01J4/00

CPC分类号： G01R29/0885 ,  G01R15/242 ,  G01R29/12

摘要： A voltage and electric field measuring device is disclosed. The device uses light, including a polarizer, an electro-optic crystal consisting of a material having an optical rotatory power, and an analyzer arranged in the stated order in the direction of advancement of applied light, with a quarter-wave plate being disposed between the polarizer and crystal or between the crystal and analyzer. The angle of orientation .psi. of the analyzer, relative to the optical axis of the crystal, is set to the product of .theta. and l, where .theta. represents the optical rotatory power, with respect to the applied light, of the crystal near a point at the center of a range of varying temperatures at the installation environment, and l represents the thickness of the crystal measured in the direction of advancement of light. The specified relation between .psi. and .theta..multidot.l maximizes the temperature stability of the device.

摘要翻译： 公开了电压和电场测量装置。 该装置使用包括偏振器的光，由具有旋光力的材料组成的电光晶体，以及按照所述顺序在施加光的推进方向上布置的分光器，四分之一波片位于 偏振器和晶体或晶体与分析仪之间。 分析仪相对于晶体的光轴的取向角的角度被设置为θ和l的乘积，其中θ表示相对于所施加的光的旋光度 在安装环境下的变化温度范围的中心，l表示在光的前进方向上测量的晶体的厚度。 psi和θxl之间的指定关系最大化了设备的温度稳定性。

公开(公告)号：US4465969A

公开(公告)日：1984-08-14

申请号：US197432

申请日：1980-10-16

申请人： Koji Tada ,  Hirokuni Nanba ,  Yoshiki Kuhara ,  Masayoshi Tatsumi

发明人： Koji Tada ,  Hirokuni Nanba ,  Yoshiki Kuhara ,  Masayoshi Tatsumi

IPC分类号： G01R15/24 ,  G01R29/12 ,  G02F1/03 ,  G01R19/00 ,  G01R5/28 ,  G02F1/26

CPC分类号： G01R29/12 ,  G01R15/242 ,  G02F1/03

摘要： A voltage and electric field measuring device using light as an operating parameter. An electro-optic crystal, a quarter-wave plate, and a polarization analyzer are arranged in that order in the direction of advancement of applied light. A voltage may be applied to the electro-optic crystal through electrodes arranged thereon. The electro-optic crystal belongs to a cubic system, such as bismuth silicon oxide or bismuth germanium oxide.

摘要翻译： 一种使用光作为操作参数的电压和电场测量装置。 电光晶体，四分之一波片和偏振分析器按照施加光的前进方向依次排列。 可以通过布置在其上的电极将电压施加到电光晶体。 电光晶体属于立方体系，例如氧化硅铋或氧化铋锗。

公开(公告)号：US07366428B2

公开(公告)日：2008-04-29

申请号：US10940529

申请日：2004-09-14

申请人： Yoshiki Kuhara ,  Mitsuaki Nishie ,  Shigeo Hayashi

发明人： Yoshiki Kuhara ,  Mitsuaki Nishie ,  Shigeo Hayashi

IPC分类号： H04B10/06

CPC分类号： H04B10/691

摘要： An optical receiver includes a light-receiving part and a control part. The light-receiving part includes an APD, a PIN-PD, and a branching optical device. First signal light is incident on the light-receiving part and is divided into second signal light and third signal light which are incident on the APD and the PIN-PD, respectively, by the branching optical device. Due to this structure, the third signal light is incident on the PIN-PD without the quantity thereof being varied depending on the polarization state of the first signal light. The control part generates a supply voltage at which a desired avalanche multiplication factor is obtained in the APD on the basis of the output current from the PIN-PD. According to the above-described structure, the avalanche multiplication factor of the APD is accurately controlled on the basis of the output current of the PIN-PD.

摘要翻译： 光接收器包括光接收部分和控制部分。 光接收部分包括APD，PIN-PD和分支光学装置。 第一信号光入射在光接收部分上，分别由分支光学装置分别入射到APD和PIN-PD上的第二信号光和第三信号光。 由于这种结构，第三信号光入射在PIN-PD上，其数量根据第一信号光的偏振状态而变化。 控制部分基于来自PIN-PD的输出电流产生在APD中获得期望的雪崩倍增因子的电源电压。 根据上述结构，基于PIN-PD的输出电流来精确地控制APD的雪崩倍增系数。

公开(公告)号：US07355259B2

公开(公告)日：2008-04-08

申请号：US11207449

申请日：2005-08-18

申请人： Akira Yamaguchi ,  Yoshiki Kuhara

发明人： Akira Yamaguchi ,  Yoshiki Kuhara

IPC分类号： H01L31/06

CPC分类号： H01L31/105 ,  H01L27/1446 ,  H01L31/12

摘要： Disclosed is a photodiode array which includes a plurality of p-i-n photodiodes arrayed on a semi-insulative semiconductor substrate, each photodiode including an n-type semiconductor layer grown on the substrate, an i-type semiconductor layer grown on the n-type semiconductor layer, a p-type semiconductor layer grown on the i-type semiconductor layer, an n-type electrode provided on the n-type semiconductor layer in a region exposed by partially removing the p-type semiconductor layer and the i-type semiconductor layer, and a p-type electrode provided on the p-type semiconductor layer. A trench is provided between the two adjacent photodiodes by partially removing the p-type semiconductor layer, the i-type semiconductor layer, and the n-type semiconductor layer. Consequently, the size and pitch of the photodiodes can be decreased and crosstalk between the photodiodes can be reduced. Also disclosed is an optical receiver device including the photodiode array.

摘要翻译： 公开了一种光电二极管阵列，其包括排列在半绝缘半导体衬底上的多个引脚光电二极管，每个光电二极管包括在衬底上生长的n型半导体层，在n型半导体层上生长的i型半导体层， 在i型半导体层上生长的p型半导体层，在通过部分去除p型半导体层和i型半导体层而露出的区域中的n型半导体层上设置的n型电极，以及 设置在p型半导体层上的p型电极。 通过部分去除p型半导体层，i型半导体层和n型半导体层，在两个相邻的光电二极管之间设置沟槽。 因此，可以减小光电二极管的尺寸和间距，并且可以减小光电二极管之间的串扰。 还公开了包括光电二极管阵列的光接收器件。