公开(公告)号：US07411992B2

公开(公告)日：2008-08-12

申请号：US11120950

申请日：2005-05-04

申请人： Yukio Furukawa ,  Hajime Sakata ,  Kazunari Fujii

发明人： Yukio Furukawa ,  Hajime Sakata ,  Kazunari Fujii

IPC分类号： H01S3/08

CPC分类号： H01S5/06256 ,  H01S5/005 ,  H01S5/0092 ,  H01S5/02248 ,  H01S5/0617 ,  H01S5/06804

摘要： A light wavelength converting apparatus includes a semiconductor laser having gain, phase, and DBR regions, a nonlinear optical device for receiving fundamental-wave light emitted from the semiconductor laser and outputting second harmonic wave light, a first optical detector for monitoring output of the fundamental-wave light, a second optical detector for monitoring the second harmonic wave light, and a control portion for controlling a drive current for driving the semiconductor laser. The control portion includes a control parameter determiner and wavelength controller. The control parameter determiner changes a DBR current supplied to the DBR region and a phase current supplied to the phase region to obtain a changing point, and determines a control parameter for controlling the DBR and phase currents such that the relationship therebetween is not located on the changing point. The wavelength controller controls the DBR and phase currents pursuant to the control parameter.

摘要翻译： 光波长转换装置包括具有增益，相位和DBR区域的半导体激光器，用于接收从半导体激光器发射的基波并输出二次谐波光的非线性光学装置，用于监视基波的输出的第一光学检测器 波光，用于监测二次谐波光的第二光检测器，以及用于控制用于驱动半导体激光器的驱动电流的控制部分。 控制部分包括控制参数确定器和波长控制器。 控制参数确定器改变提供给DBR区域的DBR电流和提供给相位区域的相电流以获得改变点，并且确定用于控制DBR和相电流的控制参数，使得它们之间的关系不位于 变化点 波长控制器根据控制参数控制DBR和相电流。

公开(公告)号：US20050265419A1

公开(公告)日：2005-12-01

申请号：US11120951

申请日：2005-05-04

申请人： Kazunari Fujii ,  Hajime Sakata ,  Yukio Furukawa

发明人： Kazunari Fujii ,  Hajime Sakata ,  Yukio Furukawa

IPC分类号： G03B21/00 ,  H01S3/10 ,  H01S5/00 ,  H01S5/06 ,  H01S5/0625 ,  H01S5/068 ,  H01S5/0683 ,  H01S5/125 ,  H04N9/31

CPC分类号： H04N9/3129 ,  H01S5/005 ,  H01S5/0092 ,  H01S5/06256 ,  H01S5/06804

摘要： A distributed Bragg reflection (DBR) semiconductor laser is controlled in an image projecting apparatus. The image projecting apparatus includes the DBR semiconductor laser which is provided with a phase region and a DBR region, a light wavelength converting device for converting fundamental-wave light emitted from the DBR semiconductor laser into second harmonic wave light, an optical deflector for scanning the second harmonic wave in a one-dimensional or two-dimensional manner, and a modulating portion for modulating the DBR semiconductor laser based on an image signal. In the control method, a coefficient calculating step and a wavelength adjusting step are performed within a non-drawing time during which a drawing signal, which corresponds to the image signal, is absent. In the coefficient calculating step, at least one coefficient in a relationship between a DBR current to be injected into the DBR region and a phase current to be injected into the phase region for continuously shifting the wavelength of the fundamental-wave light is calculated. In the wavelength adjusting step, the DBR current injected into the DBR region and the phase current injected into the phase region are changed based on the relationship such that the second harmonic wave light is adjusted.

摘要翻译： 在图像投影装置中控制分布式布拉格反射（DBR）半导体激光器。 图像投影装置包括具有相位区域和DBR区域的DBR半导体激光器，用于将从DBR半导体激光器发射的基波光转换为二次谐波光的光波长转换装置，用于扫描 一维或二维二次谐波，以及用于基于图像信号调制DBR半导体激光器的调制部分。 在控制方法中，系数计算步骤和波长调整步骤在不存在对应于图像信号的绘制信号的非绘制时间内执行。 在系数计算步骤中，计算要注入到DBR区域的DBR电流和要注入到用于连续移位基波的波长的相位区域的相电流之间的关系中的至少一个系数。 在波长调整步骤中，根据调整二次谐波光的关系，改变注入DBR区域的DBR电流和注入相位区域的相电流。

公开(公告)号：US06424418B1

公开(公告)日：2002-07-23

申请号：US09318761

申请日：1999-05-26

申请人： Yuji Kawabata ,  Tadashi Okamoto ,  Hajime Sakata ,  Masanori Sakuranaga ,  Tsuyoshi Nomoto

发明人： Yuji Kawabata ,  Tadashi Okamoto ,  Hajime Sakata ,  Masanori Sakuranaga ,  Tsuyoshi Nomoto

IPC分类号： G01N2155

摘要： A surface plasmon resonance sensor apparatus includes a common substrate, a surface emitting laser, such as a VCSEL, arranged on the common substrate, a sensor array, such as CCD array, arranged on the common substrate, a light-transmitting medium provided above the common substrate, and a metal thin film formed on the light-transmitting medium to cause surface plasmon resonance due to light which is emitted from the surface emitting laser, transmitted through the light-transmitting medium and impinging on the metal thin film. The surface emitting laser, metal thin film and sensor array are positioned such that a change in an intensity of light reflected by the metal thin film caused by the surface plasmon resonance can be measured by the sensor array.

公开(公告)号：US6154302A

公开(公告)日：2000-11-28

申请号：US191534

申请日：1998-11-13

申请人： Takayuki Yagi ,  Hajime Sakata ,  Etsuro Kishi

发明人： Takayuki Yagi ,  Hajime Sakata ,  Etsuro Kishi

IPC分类号： G02B26/08

CPC分类号： G02B26/0816

摘要： A light deflection device includes a deflection member having a sphere body enclosing a deflection face portion for deflecting a light beam, or a segmental sphere body having the deflection face portion and a segmental sphere face opposing to the deflection face portion. The device also includes a supporting member for supporting the deflection member in a turnable manner, and a driver for turning the deflection member. The driver is provided on the sphere face of the deflection member, and at a position opposing the sphere face or the segmental sphere face of the deflection member to apply a driving force to the sphere face or the segmental face. In one embodiment, a light deflection device array includes the arrangement of light deflection devices in a one-dimensional or two-dimensional array.

摘要翻译： 光偏转装置包括具有包围用于偏转光束的偏转面部分的球体的偏转构件或具有偏转面部分的节段球体和与偏转面部分相对的节段球面。 该装置还包括用于以可转动的方式支撑偏转构件的支撑构件和用于转动偏转构件的驱动器。 驱动器设置在偏转构件的球面上，并且在与偏转构件的球体面或节段球面相对的位置处，以向球面或节段面施加驱动力。 在一个实施例中，光偏转装置阵列包括一维或二维阵列中的光偏转装置的布置。

公开(公告)号：US5878066A

公开(公告)日：1999-03-02

申请号：US904448

申请日：1997-07-31

申请人： Natsuhiko Mizutani ,  Hajime Sakata ,  Yukio Furukawa

发明人： Natsuhiko Mizutani ,  Hajime Sakata ,  Yukio Furukawa

IPC分类号： H01S5/062 ,  H01S5/0625 ,  H01S5/10 ,  H01S5/12 ,  H01S5/20 ,  H01S5/227 ,  H01S5/32 ,  H01S5/34 ,  H01S5/343 ,  H01S5/50 ,  H01S3/10

CPC分类号： B82Y20/00 ,  H01S5/0625 ,  H01S5/12 ,  H01S2301/14 ,  H01S5/06203 ,  H01S5/06236 ,  H01S5/1057 ,  H01S5/106 ,  H01S5/1064 ,  H01S5/1215 ,  H01S5/1225 ,  H01S5/124 ,  H01S5/204 ,  H01S5/227 ,  H01S5/2275 ,  H01S5/3201 ,  H01S5/3404 ,  H01S5/3413 ,  H01S5/34306 ,  H01S5/3434 ,  H01S5/5009 ,  H01S5/5018

摘要： An optical semiconductor apparatus includes at least two semiconductor laser portions each having a light waveguide with an active layer and a distributed reflector, and a stimulating unit for independently stimulating the active layers of the light waveguides. The semiconductor laser portions are serially arranged in a light propagation direction. The light waveguides are constructed such that a difference between propagation constants for two different polarization modes in one of the waveguides is different from a difference between propagation constants for the two different polarization modes in the other of the waveguides. When one of injection of a modulation current signal into or application of a modulation voltage to the optical semiconductor apparatus, an oscillation state can be switched between a state in which Bragg wavelengths for one of the two different polarization modes coincide with each other between the light waveguides and a state in which Bragg wavelengths for the other of the two different polarization modes coincide with each other between the light waveguides.

摘要翻译： 光学半导体装置包括至少两个半导体激光器部分，每个半导体激光器部分具有有源层的光波导和分布反射器，以及用于独立地激发光波导的有源层的刺激单元。 半导体激光器部分沿光传播方向串联布置。 光波导被构造成使得波导中的一个中的两个不同偏振模式的传播常数之间的差异不同于另一个波导中两种不同偏振模式的传播常数之差。 当将调制电流信号注入或向光半导体装置施加调制电压中的一个时，可以在两个不同偏振模式中的一个的布拉格波长在光之间彼此重合的状态之间切换振荡状态 波导和两个不同偏振模式中的另一个的布拉格波长在光波导之间彼此重合的状态。

公开(公告)号：US5333216A

公开(公告)日：1994-07-26

申请号：US120234

申请日：1993-09-14

申请人： Hajime Sakata ,  Hitoshi Oda

发明人： Hajime Sakata ,  Hitoshi Oda

IPC分类号： G02B6/12 ,  G02B6/124 ,  H01S5/026 ,  H01S5/10 ,  H01S5/12 ,  H01S5/34 ,  H01S5/50 ,  G02B6/00 ,  G02B6/36

CPC分类号： H01S5/1032 ,  G02B6/12007 ,  G02B6/124 ,  H01S5/5045 ,  G02B2006/12107 ,  G02B2006/12109 ,  G02B2006/12147 ,  H01S5/0264 ,  H01S5/1035 ,  H01S5/1225 ,  H01S5/3428

摘要： An optical device comprises a substrate, a first guiding layer having a guided mode provided on the substrate, a second guiding layer laminated with the first guiding layer on the substrate, the second guiding layer having a guided mode different from that of the first guiding layer, and a diffraction grating provided on an area where the first and second guiding layers have their guided modes overlapping, the diffraction grating serving to couple the light on the specific range of wavelengths that propagate through the first guiding layer, with the second layer, wherein the diffraction grating comprises a high refractive index region and a low refractive index region disposed periodically in the propagation direction of light, the ratio of the high refractive index region to the low refractive index region occupied in one period changing gradually in the propagation direction of light.

摘要翻译： 光学装置包括基板，具有设置在基板上的引导模式的第一引导层，与基板上的第一引导层层压的第二引导层，第二引导层具有与第一引导层不同的引导模式 以及设置在第一和第二引导层具有其引导模式的区域上的衍射光栅，所述衍射光栅用于将通过第一引导层传播的特定波长范围的光耦合到第二层，其中 衍射光栅包括在光的传播方向周期性地设置的高折射率区域和低折射率区域，在一个周期中占据的高折射率区域与低折射率区域的比率在光的传播方向上逐渐变化 。

公开(公告)号：US5299037A

公开(公告)日：1994-03-29

申请号：US92569

申请日：1993-07-16

申请人： Hajime Sakata

发明人： Hajime Sakata

IPC分类号： G02F1/1335 ,  G02F1/1347 ,  G02F1/29 ,  G03B17/20 ,  G02F1/13 ,  G02B5/18

CPC分类号： G02F1/1347 ,  G02F1/1335 ,  G02F1/292 ,  G03B17/20 ,  G02F2201/305 ,  G02F2203/22

摘要： There is provided a display device in a viewfinder, including a diffraction grating whose shape is determined at an interface between first and second materials, at least one of the first and second materials being adapted to have a variable refractive index for light reflected by an object to be photographed, and control means for changing the refractive index of the first and/or second materials, wherein the control means causes the light from the object to substantially pass through the diffraction grating in a first state and causes the diffraction grating to partially diffract the light from the object to display a pattern in a second state.

摘要翻译： 提供了一种取景器中的显示装置，包括衍射光栅，其形状在第一和第二材料之间的界面处确定，第一和第二材料中的至少一个适于具有由物体反射的光的可变折射率 以及用于改变第一和/或第二材料的折射率的控制装置，其中控制装置使得来自物体的光在第一状态下基本上穿过衍射光栅，并使衍射光栅部分衍射 来自对象的光在第二状态下显示图案。

公开(公告)号：US5287422A

公开(公告)日：1994-02-15

申请号：US35249

申请日：1993-03-22

申请人： Uuichi Handa ,  Hidetoshi Nojiri ,  Hajime Sakata

发明人： Uuichi Handa ,  Hidetoshi Nojiri ,  Hajime Sakata

IPC分类号： G02B6/12 ,  H01S5/026 ,  H01S5/10 ,  H01S5/50 ,  H04B10/213 ,  G02B6/10

CPC分类号： H01S5/50 ,  G02B6/12004 ,  H01S5/0264 ,  H01S5/10

摘要： This specification discloses an integrated type optical node comprising a substrate, a channel light waveguide formed on the substrate for connecting the transmission lines of an optical information system, an amplifying portion provided on the light waveguide for amplifying a light propagated through the waveguide, and a light branching-off portion provided on the light waveguide for coupling a light transmitter and/or a light receiver to the transmission lines. The specification also discloses an optical information system using such optical node.

摘要翻译： 本说明书公开了一种集成型光节点，包括基板，形成在基板上的用于连接光信息系统的传输线的通道光波导，设置在光波导上的用于放大通过波导传播的光的放大部分，以及 设置在光波导上用于将光发射器和/或光接收器耦合到传输线的光分支部分。 本说明书还公开了使用这种光节点的光信息系统。

公开(公告)号：US5222163A

公开(公告)日：1993-06-22

申请号：US814444

申请日：1991-12-30

申请人： Uuichi Handa ,  Hidetoshi Nojiri ,  Hajime Sakata

发明人： Uuichi Handa ,  Hidetoshi Nojiri ,  Hajime Sakata

IPC分类号： G02B6/12 ,  H01S5/026 ,  H01S5/10 ,  H01S5/50 ,  H04B10/213

CPC分类号： H01S5/50 ,  G02B6/12004 ,  H01S5/0264 ,  H01S5/10

摘要： This specification discloses an integrated type optical node comprising a substrate, a channel light waveguide formed on the substrate for connecting the transmission lines of an optical information system, an amplifying portion provided on the light waveguide for amplifying a light propagated through the waveguide, and a light branching-off portion provided on the light waveguide for coupling a light transmitter and/or a light receiver to the transmission lines. The specification also discloses an optical information system using such optical node.

摘要翻译： 本说明书公开了一种集成型光节点，包括基板，形成在基板上的用于连接光信息系统的传输线的通道光波导，设置在光波导上的用于放大通过波导传播的光的放大部分，以及 设置在光波导上用于将光发射器和/或光接收器耦合到传输线的光分支部分。 本说明书还公开了使用这种光节点的光信息系统。

公开(公告)号：US5220573A

公开(公告)日：1993-06-15

申请号：US795966

申请日：1991-11-21

申请人： Hajime Sakata ,  Hidetoshi Nojiri

发明人： Hajime Sakata ,  Hidetoshi Nojiri

IPC分类号： H01S5/00 ,  H01S5/026 ,  H01S5/125 ,  H01S5/16 ,  H01S5/22

CPC分类号： H01S5/026 ,  G02B6/124 ,  G02B6/125 ,  H01S5/0064 ,  H01S5/125 ,  H01S5/164 ,  H01S5/22

摘要： The present invention relates to optical apparatus such as a photosensor, a semiconductor laser, an optical amplifier in which a wavelength selective photocoupler is used so as to couple two waveguides through a diffraction grating. A photosensor which is one of the optical apparatus according to the present invention comprises a substrate, a first waveguide layer formed on the substrate, a second waveguide layer formed on the first waveguide layer to be stacked in a direction of thickness and which has a guided mode difference from that of the first waveguide layer, a diffraction grating formed on an overlapping region of the guided modes of the first and second waveguide layers and which couples light components of a specific wavelength range of light propagating through the first waveguide layer to the second waveguide layer, a light absorption layer for absorbing at least some light components of the light components coupled to the second waveguide layer, and an electrode for converting the light components absorbed by the light absorption layer into an electrical signal and outputting the electrical signal.

摘要翻译： 本发明涉及光传感器，半导体激光器，光放大器等光学装置，其中使用波长选择性光电耦合器，以便通过衍射光栅耦合两个波导。 作为本发明的光学装置之一的光电传感器包括基板，形成在基板上的第一波导层，形成在第一波导层上的第二波导层，以沿厚度方向堆叠并且具有引导 与第一波导层的模式差异，形成在第一和第二波导层的引导模式的重叠区域上并且将通过第一波导层传播的特定波长范围的光分量耦合到第二波导层的第二 波导层，用于吸收耦合到第二波导层的光分量的至少一些光分量的光吸收层，以及用于将由光吸收层吸收的光分量转换成电信号并输出​​电信号的电极。