公开(公告)号：US20120183009A1

公开(公告)日：2012-07-19

申请号：US13350087

申请日：2012-01-13

申请人： Koichiro ADACHI ,  Yasunobu MATSUOKA ,  Toshiki SUGAWARA ,  Kazunori SHINODA ,  Shinji TSUJI

发明人： Koichiro ADACHI ,  Yasunobu MATSUOKA ,  Toshiki SUGAWARA ,  Kazunori SHINODA ,  Shinji TSUJI

IPC分类号： H01S3/08 ,  H01L21/02 ,  G02B6/12

CPC分类号： H01S5/18 ,  G02B6/4214 ,  H01L2224/16225 ,  H01L2924/15311 ,  H01S5/0202 ,  H01S5/0207 ,  H01S5/0224 ,  H01S5/02284 ,  H01S5/0267 ,  H01S5/12 ,  H01S5/2224 ,  H01S5/2226 ,  H01S5/42

摘要： The horizontal cavity surface emitting laser includes a cavity structure portion including a stacked structure of a first conduction type clad layer, an active layer and a second conduction type clad layer stacked over a semiconductor substrate and causing light generated by the active layer to be reflected or resonated, an optical waveguide layer provided at part of the semiconductor substrate and guiding the light, a reflector provided in the optical waveguide layer, for reflecting the light and emitting the light from the back surface of the semiconductor substrate, and a condensing lens provided at the back surface thereof and focusing the reflected light. The back surface thereof has a groove provided with the condensing lens and a terrace-like portion disposed below the cavity structure portion and has a terrace shape with the cleavage direction along a longitudinal direction thereof provided along a cleavage direction of the semiconductor substrate.

摘要翻译： 水平腔表面发射激光器包括空腔结构部分，其包括层叠在半导体衬底上的第一导电型覆盖层，有源层和第二导电型覆盖层的叠层结构，并使由有源层产生的光反射或 谐振的光波导层，设置在半导体衬底的一部分并引导光的光波导层，设置在光波导层中的反射器，用于反射光并从半导体衬底的背面发射光;以及聚光透镜，其设置在 其背面并聚焦反射光。 其背面具有设置有聚光透镜的凹槽和设置在空腔结构部下方的具有沿着半导体基板的解理方向设置的沿其长度方向的切割方向的台阶状的台阶状。

公开(公告)号：US20120177227A1

公开(公告)日：2012-07-12

申请号：US13343206

申请日：2012-01-04

申请人： Koichiro ADACHI

发明人： Koichiro ADACHI

IPC分类号： H03G3/00

CPC分类号： H03G1/0088 ,  H03G3/001

摘要： A sound volume control circuit includes: a first operational amplifier; a variable resistor circuit connected between an output and an inverting input of the first operational amplifier and having a plurality of resistance values; an R-2R ladder circuit connected between a voltage source of an input voltage; and a control circuit controlling the variable resistor circuit and the R-2R ladder circuit; wherein when changing a resistance value of the variable resistor circuit from a first resistance value to a second resistance value, so as to change the output voltage in a step size where a difference between the output voltage corresponding to the first resistance value and the output voltage corresponding to the second resistance value is further segmented, the control circuit changes the magnitude of the electric current flowing to the variable resistor circuit by use of the R-2R ladder circuit.

摘要翻译： 音量控制电路包括：第一运算放大器; 连接在所述第一运算放大器的输出和反相输入端之间并具有多个电阻值的可变电阻电路; 连接在输入电压的电压源之间的R-2R梯形电路; 以及控制可变电阻电路和R-2R梯形电路的控制电路; 其中当将所述可变电阻器电路的电阻值从第一电阻值改变为第二电阻值时，以使所述输出电压以与所述第一电阻值相对应的输出电压与所述输出电压之间的差为单位的步长改变 对应于第二电阻值进一步分段，控制电路通过使用R-2R梯形电路改变流向可变电阻电路的电流的大小。

公开(公告)号：US20110063036A1

公开(公告)日：2011-03-17

申请号：US12872239

申请日：2010-08-31

申请人： Koichiro Adachi

发明人： Koichiro Adachi

IPC分类号： H03F3/04

CPC分类号： H03F3/3022 ,  H03F3/45094 ,  H03F2200/405 ,  H03F2200/516 ,  H03F2200/555

摘要： A multi-stage amplification type class-AB operational amplifier disclosed includes an amplification stage having plural amplification sections formed in multiple stages, and a class-AB output stage having a bias section and an output section, in which an input signal input to the amplification stage is sequentially amplified by the plural amplification sections, and further amplified by the bias section and the output section of the class-AB output stage. A positive supply voltage applied to the amplification stage is different from a positive supply voltage applied to the class-AB output stage, and a negative supply voltage applied to the amplification stage is different from a negative supply voltage applied to the class-AB output stage.

摘要翻译： 所公开的多级放大型AB类运算放大器包括具有多级放大部分的多级放大级和具有偏置部分和输出部分的AB类输出级，其中输入到放大器的输入信号 通过多个放大部分顺序地放大级，并且由AB类输出级的偏置部分和输出部分进一步放大。 施加到放大级的正电源电压与施加到AB类输出级的正电源电压不同，施加到放大级的负电源电压与施加到AB类输出级的负电源电压不同 。

公开(公告)号：US20110026878A1

公开(公告)日：2011-02-03

申请号：US12844452

申请日：2010-07-27

申请人： Yasunobu MATSUOKA ,  Toshiki Sugawara ,  Koichiro Adachi ,  Naoki Matsushima ,  Saori Hamamura ,  Madoka Minagawa ,  Norio Chujo

发明人： Yasunobu MATSUOKA ,  Toshiki Sugawara ,  Koichiro Adachi ,  Naoki Matsushima ,  Saori Hamamura ,  Madoka Minagawa ,  Norio Chujo

IPC分类号： G02B6/12 ,  G02B6/30 ,  H01R43/00

CPC分类号： G02B6/43 ,  G02B6/4214 ,  G02B6/423 ,  H01S5/423 ,  Y10T29/49117

摘要： In fabricating an optical I/O array module, an optical waveguide provided with mirror parts, each having a tapered face, is formed on a substrate, a convex shaped member or a concave shaped member is placed at spots above the respective mirror parts of the optical waveguide, and laser diode arrays and photo diode arrays, provided with either a concave shape, or a convex shape, are mated with, or into the convex shaped member or the concave shaped member before being mounted. Further, there are formed multiple filmy layers, on which an LSI where a driver IC LSI of optical elements, and an amplifier LSI of the optical elements are integrated.

摘要翻译： 在制造光学I / O阵列模块时，在衬底上形成具有锥面的镜部分的光波导，凸形或凹形的部件位于 光波导，激光二极管阵列和具有凹形或凸形的光电二极管阵列在安装之前与凸形构件或凹形构件配合或配合。 此外，形成有多个膜层，其上集成有光学元件的驱动器IC LSI和光学元件的放大器LSI的LSI。

公开(公告)号：US20100278482A1

公开(公告)日：2010-11-04

申请号：US12810442

申请日：2008-12-15

申请人： Koichiro Adachi ,  Kazuhiko Hosomi ,  Toshiki Sugawara

发明人： Koichiro Adachi ,  Kazuhiko Hosomi ,  Toshiki Sugawara

IPC分类号： G02B6/32

CPC分类号： H04B10/40 ,  G02B6/29367 ,  G02B6/32 ,  G02B6/4204 ,  G02B6/4246 ,  H01L31/02325 ,  H01L31/153 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02288 ,  H01S5/02292 ,  H01S5/0267 ,  H01S5/0687

摘要： The optical module includes an optical device mounting substrate 1 and an optical multiplexer/demultiplexer 2. One laser diode and at least one photodetector, which are positioned in the same plane, are mounted on the optical device mounting substrate 1. The optical multiplexer/demultiplexer is prepared by mounting a wavelength-selective filter and a mirror on the front and back surfaces of a transparent substrate. The optical device mounting substrate and the optical multiplexer/demultiplexer are mounted in a package 3 in such a manner that the optical device mounting surface and the filter surface are not parallel to each other. The optical module also includes a first lens, which is positioned near the laser diode or monolithically integrated with the laser diode, and a second lens, which converges light coming out of the optical multiplexer/demultiplexer toward an optical fiber.

摘要翻译： 光学模块包括光学装置安装基板1和光复用器/解复用器2.位于同一平面中的一个激光二极管和至少一个光电检测器安装在光学装置安装基板1上。光复用器/解复用器 通过在透明基板的前表面和后表面上安装波长选择性滤光器和反射镜来制备。 光学装置安装基板和光复用器/解复用器以光学装置安装表面和滤光器表面彼此不平行的方式安装在封装3中。 光学模块还包括位于激光二极管附近或与激光二极管单片集成的第一透镜，以及将从光复用器/解复用器出来的光会聚到光纤的第二透镜。

公开(公告)号：US20100265983A1

公开(公告)日：2010-10-21

申请号：US12759024

申请日：2010-04-13

申请人： Koichiro ADACHI ,  Yasunobu MATSUOKA ,  Toshiki SUGAWARA ,  Masahiro AOKI

发明人： Koichiro ADACHI ,  Yasunobu MATSUOKA ,  Toshiki SUGAWARA ,  Masahiro AOKI

IPC分类号： H01S5/026 ,  H01S5/20 ,  H01S5/18 ,  H01L31/0232

CPC分类号： H01S5/18 ,  G02B6/322 ,  G02B6/4214 ,  G02B6/423 ,  H01S5/0207 ,  H01S5/02212 ,  H01S5/02284 ,  H01S5/0267 ,  H01S5/12 ,  H01S5/18311

摘要： In order to provide a compact optical module permitting highly efficient optical coupling and having components thereof highly densely packaged, a light emitting diode that is included in the optical module and emits light in a vertical direction with respect to a principal surface of a semiconductor substrate is provided with a lens integrated into a light emitting region, and a retaining section integrated to surround the light emitting region. Accordingly, readiness in alignment of the light emitting diode and an optical fiber, which guides light emitted from the light emitting diode, with each other is upgraded. Eventually, the compact optical module permitting highly efficient optical coupling and having components thereof highly densely packaged can be provided.

摘要翻译： 为了提供一种紧凑的光学模块，其允许高效光耦合并且具有高密度封装的部件，包括在光学模块中并相对于半导体衬底的主表面沿垂直方向发光的发光二极管是 设置有集成到发光区域中的透镜，以及整合在围绕发光区域的保持部分。 因此，升级了将发光二极管发出的光引导的发光二极管与光纤对准的准备状态。 最终，可以提供允许高效光耦合并且具有高密度封装的部件的紧凑型光学模块。

公开(公告)号：US07705679B2

公开(公告)日：2010-04-27

申请号：US12251483

申请日：2008-10-15

申请人： Koichiro Adachi

发明人： Koichiro Adachi

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F1/523 ,  H03F3/3028 ,  H03F2200/513 ,  H03F2203/45396 ,  H03F2203/45616 ,  H03F2203/45726

摘要： An operational amplifier includes a first differential stage, a second differential stage, a second cascade amplifier stage, an output unit, a first switching control unit and a second switching control unit. When an external signal for stopping operation is input, the first switching control unit shuts off a connection between a non-inverting input terminal and a control electrode of one input transistor at each first and second differential stage, and shuts off a connection between an inverting input terminal and a control electrode of another input transistor at the first and second differential stages, and the second switching control unit connects the negative-side power supply voltage terminal to each control gate of the input transistors at the first and second differential stages and to the substrate gates of the input transistors at the first differential stage.

摘要翻译： 运算放大器包括第一差分级，第二差分级，第二级联放大级，输出单元，第一开关控制单元和第二开关控制单元。 当输入用于停止操作的外部信号时，第一开关控制单元在每个第一和第二差分级处切断一个输入晶体管的非反相输入端子和控制电极之间的连接，并且切断反相 输入端子和第一差分级和第二差分级的另一输入晶体管的控制电极，第二开关控制单元将负侧电源电压端子连接到第一和第二差分级的输入晶体管的每个控制栅极，并且 在第一差分级的输入晶体管的衬底栅极。

公开(公告)号：US20090129421A1

公开(公告)日：2009-05-21

申请号：US12028127

申请日：2008-02-08

申请人： Takeshi Kitatani ,  Kazunori Shinoda ,  Koichiro Adachi ,  Masahiro Aoki

发明人： Takeshi Kitatani ,  Kazunori Shinoda ,  Koichiro Adachi ,  Masahiro Aoki

IPC分类号： H01S5/323

CPC分类号： H01S5/125 ,  H01S5/0207 ,  H01S5/026 ,  H01S5/0267 ,  H01S5/1039 ,  H01S5/1085 ,  H01S5/12 ,  H01S5/168 ,  H01S5/18 ,  H01S5/22

摘要： In an edge emitting laser having a window region with a ridge-waveguide structure, particularly, in a short cavity type of a laser operated with a low current, there has been a problem of its operating current being increased due to current leakage of the window portion. To solve this problem, in the window region, between an n-type substrate and a p-type cladding layer, a semi-insulating semiconductor layer into which Ru is doped is inserted. Alternatively, a stacked structure of a Ru-doped layer and a Fe-doped layer is introduced.

摘要翻译： 在具有脊 - 波导结构的窗口区域的边缘发射激光器中，特别地，在具有低电流操作的短腔型激光器中，存在由于窗口的电流泄漏而使其工作电流增加的问题 一部分。 为了解决这个问题，在窗口区域中，插入n型衬底和p型覆层之间，掺杂Ru的半绝缘半导体层。 或者，引入Ru掺杂层和Fe掺杂层的堆叠结构。

公开(公告)号：US20090102558A1

公开(公告)日：2009-04-23

申请号：US12251483

申请日：2008-10-15

申请人： KOICHIRO ADACHI

发明人： KOICHIRO ADACHI

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F1/523 ,  H03F3/3028 ,  H03F2200/513 ,  H03F2203/45396 ,  H03F2203/45616 ,  H03F2203/45726

摘要： An operational amplifier includes a first differential stage, a second differential stage, a second cascade amplifier stage, an output unit, a first switching control unit and a second switching control unit. When an external signal for stopping operation is input, the first switching control unit shuts off a connection between a non-inverting input terminal and a control electrode of one input transistor at each first and second differential stage, and shuts off a connection between an inverting input terminal and a control electrode of another input transistor at the first and second differential stages, and the second switching control unit connects the negative-side power supply voltage terminal to each control gate of the input transistors at the first and second differential stages and to the substrate gates of the input transistors at the first differential stage.

摘要翻译： 运算放大器包括第一差分级，第二差分级，第二级联放大级，输出单元，第一开关控制单元和第二开关控制单元。 当输入用于停止操作的外部信号时，第一开关控制单元在每个第一和第二差分级处切断一个输入晶体管的非反相输入端子和控制电极之间的连接，并且切断反相 输入端子和第一差分级和第二差分级的另一输入晶体管的控制电极，第二开关控制单元将负侧电源电压端子连接到第一和第二差分级的输入晶体管的每个控制栅极，并且 在第一差分级的输入晶体管的衬底栅极。

公开(公告)号：US07502403B2

公开(公告)日：2009-03-10

申请号：US11831986

申请日：2007-08-01

申请人： Kazunori Shinoda ,  Koichiro Adachi ,  Hideo Arimoto

发明人： Kazunori Shinoda ,  Koichiro Adachi ,  Hideo Arimoto

IPC分类号： H01S3/08 ,  H01S5/00

CPC分类号： G02B6/4246 ,  B82Y20/00 ,  G02B6/4214 ,  H01S5/005 ,  H01S5/02212 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/026 ,  H01S5/0267 ,  H01S5/028 ,  H01S5/1085 ,  H01S5/12 ,  H01S5/18 ,  H01S5/2224 ,  H01S5/2275 ,  H01S5/34306

摘要： In a horizontal cavity surface emitted laser, there is provided a device structure that is capable of obtaining a circular narrow-divergence emitted beam that is high in the optical coupling efficiency with a fiber. As a first means, there is provided a horizontal cavity surface emitting laser having a structure in which the plane mirror that is inclined by 45° and the bottom lens of the oval configuration are integrally structured. As a second means, there is provided a horizontal cavity surface emitting laser in which the mirror having the columnar front surface configuration inclined by 45° and the bottom lens of the columnar front surface configuration are integrally structured. Since the horizontal component and the vertical component of the laser beam can be shaped, independently, through the above means. As a result, it is possible to obtain the circular narrow-divergence emitted beam.

摘要翻译： 在水平腔表面发射激光器中，提供了一种能够获得与光纤的光耦合效率高的圆形窄发散射束的器件结构。 作为第一手段，提供了一种水平腔表面发射激光器，其具有倾斜45°的平面镜和椭圆形的底部透镜一体构造的结构。 作为第二装置，提供了一种水平腔表面发射激光器，其中具有倾斜45°的柱状前表面结构的反射镜和柱状前表面构造的底部透镜是一体构造的。 由于可以通过上述方式独立地对激光束的水平分量和垂直分量进行成形。 结果，可以获得圆形窄发散光束。