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    Optical module, optical transmission apparatus, WDM optical transmission device, and method for stabilizing laser wavelength
    1.
    发明授权
    Optical module, optical transmission apparatus, WDM optical transmission device, and method for stabilizing laser wavelength 有权

    公开(公告)号：US07106978B2

    公开(公告)日：2006-09-12

    申请号：US10266784

    申请日：2002-10-09

    申请人： Hideyuki Nasu ,  Takehiko Nomura ,  Kumiko Imai

    发明人： Hideyuki Nasu ,  Takehiko Nomura ,  Kumiko Imai

    IPC分类号： H04B10/04

    CPC分类号： H04B10/506 ,  H01S5/02208 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/02438 ,  H01S5/0687 ,  H04B10/572

    摘要： An optical module according to the present invention includes: a light-emitting device that outputs laser light; a temperature adjustment unit that adjusts a wavelength of the laser light outputted from the light-emitting device so as to be locked at a predetermined wavelength; a wavelength monitor unit that receives laser light outputted from the light-emitting device by allowing the laser light to pass through an optical filter provided above the temperature adjustment unit and monitors the wavelength thereof; a package for sealing the light-emitting device, the temperature adjustment unit, and the wavelength monitor unit into the inside thereof; and a package temperature detection unit for detecting a temperature of the package, in which the temperature adjustment unit adjusts an oscillation wavelength of the laser light outputted from the light-emitting device to the predetermined lock wavelength based on a signal outputted from the wavelength monitor unit, and a signal from the package temperature detection unit is used to correct the lock wavelength shift caused by temperature characteristics of the optical filter by estimating the optical filter temperature based on the detected package temperature.

    Laser module
    2.
    发明授权
    Laser module 有权
    激光模块

    公开(公告)号：US06807208B2

    公开(公告)日：2004-10-19

    申请号：US10224496

    申请日：2002-08-21

    申请人： Hideyuki Nasu ,  Takehiko Nomura ,  Tatsuhiko Ueki ,  Mamoru Shimada ,  Yuji Hiratani

    发明人： Hideyuki Nasu ,  Takehiko Nomura ,  Tatsuhiko Ueki ,  Mamoru Shimada ,  Yuji Hiratani

    IPC分类号： H01S304

    CPC分类号： H01S5/02208 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/024 ,  H01S5/02446 ,  H01S5/06837 ,  H01S5/0687

    摘要： An optical filter is provided on a first thermo-module whose temperature is controlled to be constant, via a base. Accordingly, a wavelength discrimination characteristic of the optical filter and an optical isolator can be stabilized, thereby realizing more accurate wavelength locking. Further, a second thermo-module is provided on the first thermo-module whose temperature is controlled to be constant. Accordingly, the temperature control range of the second thermo-module can be expanded, and hence the wavelength variable range of a semiconductor laser device provided on the second thermo-module via a base and a submount can be expanded.

    摘要翻译： 光学滤波器设置在第一热模块上，其温度通过基极被控制为恒定。 因此，可以使光学滤波器和光隔离器的波长鉴别特性稳定，从而实现更精确的波长锁定。 此外，在温度被控制为恒定的第一热模块上设置第二热模块。 因此，可以扩大第二热电模块的温度控制范围，因此可以扩大通过基座和基座设置在第二热模块上的半导体激光器件的波长可变范围。

    System for controlling wavelength of laser beam
    3.
    发明授权
    System for controlling wavelength of laser beam 有权
    用于控制激光束波长的系统

    公开(公告)号：US06765938B2

    公开(公告)日：2004-07-20

    申请号：US10102908

    申请日：2002-03-22

    申请人： Hideyuki Nasu ,  Takehiko Nomura

    发明人： Hideyuki Nasu ,  Takehiko Nomura

    IPC分类号： H01S313

    CPC分类号： H01S5/0687

    摘要： The present invention provides a system for controlling a wavelength of laser light comprising: a light-emitting device for outputting laser light; means for regulating a temperature of said light-emitting device; a wavelength monitor for receiving the laser light transmitted from said light-emitting device through an optical filter, said optical filter having a periodic wavelength-transmissivity intensity curve; a controlling unit for providing a control signal to control an current supplied to said temperature regulating means responsive to a output signal from said wavelength monitor; said control signal having a polarity; and means for switching the polarity of said control signal.

    摘要翻译： 本发明提供一种控制激光波长的系统，包括：用于输出激光的发光装置; 用于调节所述发光装置的温度的装置; 波长监视器，用于接收从所述发光装置通过滤光器透射的激光，所述滤光器具有周期性的波长透射率强度曲线; 控制单元，用于响应于来自所述波长监视器的输出信号，提供控制信号以控制提供给所述温度调节装置的电流; 所述控制信号具有极性; 以及用于切换所述控制信号的极性的装置。

    Method of controlling a wavelength of a semiconductor laser, optical module, optical transmitter, WDM optical transmission apparatus, and method of controlling a wavelength of an optical module
    5.
    发明授权
    Method of controlling a wavelength of a semiconductor laser, optical module, optical transmitter, WDM optical transmission apparatus, and method of controlling a wavelength of an optical module 有权
    控制半导体激光器的波长的方法，光模块，光发射机，WDM光传输装置以及控制光模块的波长的方法

    公开(公告)号：US06822986B2

    公开(公告)日：2004-11-23

    申请号：US10159120

    申请日：2002-06-03

    申请人： Hideyuki Nasu ,  Takehiko Nomura ,  Mizuki Oike

    发明人： Hideyuki Nasu ,  Takehiko Nomura ,  Mizuki Oike

    IPC分类号： H01S313

    CPC分类号： H01S5/0687 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02438 ,  H01S5/042 ,  H01S5/0612 ,  H01S5/0683

    摘要： An optical module includes a light-emitting device that outputs laser light, a temperature detection unit that is arranged in proximity to the light-emitting device and detects the temperature of the light-emitting device, a wavelength monitor unit that receives laser light outputted from the light-emitting device and having passed through an optical filter and monitors the wavelength of the laser light, and a temperature adjustment unit that adjusts the wavelength of laser light outputted from the light-emitting device based on a signal outputted from the wavelength monitor unit. The temperature adjustment unit adjusts the wavelength of the laser light so as to fall within a wavelength range, in which the wavelength is adjustable by the wavelength monitor unit, based on a signal from the temperature detection unit, and then adjusts the wavelength of the laser light so as to be locked at a predetermined wavelength based on the signal from the wavelength monitor unit. The signal from the temperature detection unit is used to correct lock wavelength shift caused by the temperature characteristic of the optical filter by estimating the temperature of the optical filter based on the temperature of the light-emitting device.

    摘要翻译： 光学模块包括输出激光的发光装置，布置在发光装置附近并检测发光装置的温度的温度检测单元，接收从该发光装置输出的激光的波长监视单元 所述发光装置通过滤光器并监视激光的波长;以及温度调节单元，其基于从所述波长监视器单元输出的信号来调整从所述发光装置输出的激光的波长 。 温度调节单元基于来自温度检测单元的信号来调节激光的波长，使其落入波长可通过波长监视单元调节的波长范围内，然后调整激光的波长 基于来自波长监视器单元的信号将光锁定在预定波长上。 来自温度检测单元的信号用于通过基于发光装置的温度估计滤光器的温度来校正由滤光器的温度特性引起的锁定波长偏移。

    Optical module, transmitter and WDM transmitting device
    6.
    发明授权
    Optical module, transmitter and WDM transmitting device 有权
    光模块，发射机和WDM传输设备

    公开(公告)号：US06856633B2

    公开(公告)日：2005-02-15

    申请号：US10032450

    申请日：2002-01-02

    申请人： Hideyuki Nasu ,  Takehiko Nomura

    发明人： Hideyuki Nasu ,  Takehiko Nomura

    IPC分类号： H01S5/0687 ,  H01S5/024 ,  H01S3/04

    CPC分类号： H04B10/572 ,  H04B10/506

    摘要： A transmitting device includes a light-emitting device for outputting a laser beam, a temperature regulator for regulating the temperature in the light-emitting device, a wavelength monitor device for receiving the laser beam from the light-emitting device after it has passed through a optical filter thermally coupled with the light-emitting device, a control unit for controlling the temperature in the temperature regulator based on the signal outputted from the wavelength monitor device such that the lasing wavelength in the laser beam outputted from the light-emitting device will be locked at a predetermined locked wavelength, a temperature-sensing unit for sensing the temperature in the optical filter, and a correcting unit for outputting a correction signal toward the control unit based on the temperature sensed by the temperature-sensing unit, the correction signal being operative to command the correction of any deviation in the locked wavelength associated with the temperature characteristic in the optical filter. The light-emitting device, wavelength monitor device, temperature regulator and optical fiber together define an optical module.

    摘要翻译： 发送装置包括用于输出激光束的发光装置，用于调节发光装置中的温度的温度调节器，用于在发光装置通过了发光装置之后接收来自发光装置的激光束的波长监视装置 与发光装置热耦合的光学滤波器，控制单元，用于基于从波长监视装置输出的信号来控制温度调节器的温度，使得从发光装置输出的激光束的激光波长为 锁定在预定的锁定波长上，用于检测滤光器中的温度的温度检测单元，以及校正单元，用于基于由温度感测单元感测的温度向控制单元输出校正信号，校正信号为 用于命令校正与温度c相关联的锁定波长中的任何偏差 在滤光器中具有特性。 发光装置，波长监视装置，温度调节器和光纤一起定义光模块。

    Wavelength monitor and laser module
    8.
    发明授权
    Wavelength monitor and laser module 有权
    波长监视器和激光模块

    公开(公告)号：US06724800B2

    公开(公告)日：2004-04-20

    申请号：US10224607

    申请日：2002-08-21

    申请人： Hideyuki Nasu ,  Takehiko Nomura ,  Tomohiro Takagi ,  Mizuki Oike

    发明人： Hideyuki Nasu ,  Takehiko Nomura ,  Tomohiro Takagi ,  Mizuki Oike

    IPC分类号： H01S308

    CPC分类号： H01S5/0687 ,  H01S5/005 ,  H01S5/02252 ,  H01S5/02284

    摘要： A wavelength monitor capable of obtaining an optical detection signal of high quality is proposed. In the wavelength monitor, a light incident surface of an optical filter is disposed with an inclination relative to the light incident direction. With this arrangement, it is possible to make the route of a reflection light that has been reflected from the light incident surface of the optical filter deviate large from the route of an incident light that has been incident to the optical filter. Consequently, the reflected light is prevented from being incident to a semiconductor laser device or optical detectors.

    摘要翻译： 提出了能够获得高质量的光检测信号的波长监视器。 在波长监视器中，滤光器的光入射面相对于光入射方向倾斜地设置。 通过这种布置，可以使从光滤波器的光入射面反射的反射光的路径偏离入射到滤光器的入射光的路径。 因此，防止了反射光入射到半导体激光器件或光学检测器。

    Optical module and method of making the same
    9.
    发明授权
    Optical module and method of making the same 有权

    公开(公告)号：US06667997B2

    公开(公告)日：2003-12-23

    申请号：US10032612

    申请日：2002-01-02

    申请人： Hideyuki Nasu ,  Takehiko Nomura

    发明人： Hideyuki Nasu ,  Takehiko Nomura

    IPC分类号： H01S50687

    CPC分类号： H01S5/02284 ,  G02B6/29361 ,  G02B6/29373 ,  G02B6/29385 ,  G02B6/4206 ,  G02B6/4246 ,  H01S5/02248 ,  H01S5/02415 ,  H01S5/02446 ,  H01S5/0687

    摘要： An optical module has a hermetically sealed package, a semiconductor laser element located within the package for outputting a laser beam, an optical fiber for receiving and externally delivering the laser beam outputted from the front end face of the semiconductor laser element, a prism for receiving a monitoring laser beam outputted from the back end face of the semiconductor laser element and for dividing the received laser beam into two laser beam components which are inclined relative to the optical axis with predetermined angles less than 90 degrees, a first photodiode for receiving one of the laser beam components divided by the prism, a second photodiode for receiving the other laser beam component from the prism, an optical filter disposed between the first photodiode and the prism and adapted to permit only a laser beam having a predetermined wavelength range to pass therethrough, and a PD carrier in which the first and second photodiodes are mounted on the same mount surface.

    III-NITRIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR
    10.
    发明申请
    III-NITRIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR 审中-公开
    III-NITRIDE半导体场效应晶体管

    公开(公告)号：US20100219455A1

    公开(公告)日：2010-09-02

    申请号：US12699957

    申请日：2010-02-04

    申请人： Yuki Niiyama ,  Seikoh Yoshida ,  Takehiko Nomura ,  Hiroshi Kambayashi

    发明人： Yuki Niiyama ,  Seikoh Yoshida ,  Takehiko Nomura ,  Hiroshi Kambayashi

    IPC分类号： H01L29/20 ,  H01L29/78

    CPC分类号： H01L29/0847 ,  H01L29/2003 ,  H01L29/66659 ,  H01L29/7835

    摘要： An active layer of a first conductive-type includes a channel area. A first contact area and a second contact area of a second conductive-type are formed at positions across the channel area. A source electrode is formed on the first contact area. A drain electrode is formed on the second contact area. A gate electrode is formed above the channel area via a gate insulating layer. A reduced surface field zone of the second conductive-type is formed in the channel area at a position close to the second contact area. Thickness of the reduced surface field zone is 30 nanometers to 100 nanometers.

    摘要翻译： 第一导电类型的有源层包括沟道区域。 第二导电类型的第一接触区域和第二接触区域形成在穿过沟道区域的位置处。 源电极形成在第一接触区域上。 漏电极形成在第二接触区域上。 栅极通过栅极绝缘层形成在沟道区的上方。 第二导电类型的减小的表面场区形成在靠近第二接触区域的位置处的通道区域中。 还原表面场区的厚度为30纳米至100纳米。