专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08781263B2 Optical modulator 有权
标题翻译：光调制器
公开(公告)号：US08781263B2
公开(公告)日：2014-07-15
申请号：US13307886
申请日：2011-11-30
申请人： Kazuhiro Yamaji , Katsumi Uesaka
发明人： Kazuhiro Yamaji , Katsumi Uesaka
IPC分类号： G02F1/01 , G02F1/035
CPC分类号： G02F1/0134 , G02F1/0121 , G02F1/0123 , G02F1/2255 , G02F1/2257 , H04B10/5057
摘要： A Mach-Zehnder optical modulator includes a join-and-branch portion, two light wave guides connected with the join-and-branch portion, two output light waveguides connected with the join-and-branch portion, arm electrodes respectively provided on the two light waveguides, light intensity detection electrodes respectively provided on the two output light waveguides, and a leakage suppression electrode provided between the arm electrodes and the light intensity detection electrodes.
摘要翻译：马赫曾德尔光调制器包括连接和分支部分，与接合分支部分连接的两个光波导，与连接和分支部分连接的两个输出光波导，分别设置在两个分支部分上的臂电极分别设置在两个输出光波导上的光波导，光强检测电极以及设置在臂电极和光强检测电极之间的泄漏抑制电极。

2. 发明授权

US08660388B2 Optical modulation apparatus, method for controlling optical modulator, and control device for optical modulator 有权
标题翻译：光调制装置，光调制器控制方法及光调制器控制装置
公开(公告)号：US08660388B2
公开(公告)日：2014-02-25
申请号：US13306329
申请日：2011-11-29
申请人： Morihiro Seki , Katsumi Uesaka
发明人： Morihiro Seki , Katsumi Uesaka
IPC分类号： G02F1/35
CPC分类号： H04B10/50575 , G02F1/0123 , G02F1/2255 , G02F1/2257 , H04B10/5057
摘要： An optical modulation apparatus including: a Mach-Zehnder optical modulator having two optical waveguides, two output optical waveguides and a join-and-branch portion; a phase adjustment circuit configured to output a phase control signal to phase adjustment electrodes provided respectively on the two optical waveguides; a drive circuit configured to output a modulation signal to modulation electrodes provided respectively on the two optical waveguides as a differential signal, the modulation signal modulating lights propagated in the two optical waveguides; and a signal polarity reversal circuit configured to reverse a polarity of the differential signal to be output from the drive circuit.
摘要翻译：一种光调制装置，包括：具有两个光波导的Mach-Zehnder光调制器，两个输出光波导和一个接合分支部分; 相位调整电路，被配置为将相位控制信号输出到分别设置在所述两个光波导上的相位调整电极; 驱动电路，被配置为将调制信号输出到分别设置在两个光波导上的调制电极作为差分信号，调制信号调制在两个光波导中传播的光; 以及信号极性反转电路，被配置为使从驱动电路输出的差分信号的极性反转。

3. 发明授权

US08121160B2 Driver circuit for semiconductor laser diode driven in differential mode 有权
标题翻译：用于差分模式驱动的半导体激光二极管的驱动电路
公开(公告)号：US08121160B2
公开(公告)日：2012-02-21
申请号：US12402671
申请日：2009-03-12
申请人： Akihiro Moto , Katsumi Uesaka
发明人： Akihiro Moto , Katsumi Uesaka
IPC分类号： H01S3/00
CPC分类号： H01S5/042 , H01S5/0427 , H01S5/0683
摘要： A driver circuit for a semiconductor laser diode (LD) is disclosed, in which the driver circuit drives the LD in the differential mode and lowers the power consumption thereof. The driver circuit includes a differential unit to provide the modulation current to the LD, a voltage converter to provide a positive power supply to the differential unit, a detector to detect the common mode voltage of the differential outputs of the unit, and a comparing unit to control the voltage converter dynamically such that the output common mode voltage is set in a preset reference level.
摘要翻译：公开了一种用于半导体激光二极管（LD）的驱动电路，其中驱动电路以差分模式驱动LD并降低其功耗。驱动器电路包括向LD提供调制电流的差分单元，向差分单元提供正电源的电压转换器，用于检测单元的差分输出的共模电压的检测器，以及比较单元以动态地控制电压转换器，使得输出共模电压被设置在预设的参考电平。

4. 发明申请

US20050140454A1 Pre-amplifier for an optical communication 有权
标题翻译：用于光通信的前置放大器
公开(公告)号：US20050140454A1
公开(公告)日：2005-06-30
申请号：US10968353
申请日：2004-10-20
申请人： Katsumi Uesaka , Naoki Nishiyama
发明人： Katsumi Uesaka , Naoki Nishiyama
IPC分类号： H03F3/08 , H03G3/30
CPC分类号： H03G3/3084 , H03F3/08 , H03F3/087
摘要： The present invention provides an optical receiver operable for optical signals each having different transmission speed. The optical receiver includes a light-receiving device, a pre-amplifier, a main amplifier, and a control circuit. The pre-amplifier, may be a trans-impedance amplifier, includes a parallel connection of a switching device and a resistor in a trans-impedance or a load element. By switching ON/OFF the switching device, the gain and the bandwidth of the pre-amplifier may be changed. By providing a filter circuit, whose cut-off frequency may be switched, in the main amplifier, the bandwidth of the optical receiver may be varied.
摘要翻译：本发明提供一种光学接收器，可操作用于各自具有不同传输速度的光信号。光接收器包括光接收装置，前置放大器，主放大器和控制电路。前置放大器可以是跨阻放大器，包括开关器件和跨阻抗或负载元件中的电阻器的并联连接。通过切换开关装置的ON / OFF，可以改变前置放大器的增益和带宽。通过在主放大器中设置截止频率可以切换的滤波器电路，可以改变光接收器的带宽。

5. 发明授权

US08216866B2 Method to manufacture semiconductor device with optical grating 有权
标题翻译：用光栅制造半导体器件的方法
公开(公告)号：US08216866B2
公开(公告)日：2012-07-10
申请号：US12903547
申请日：2010-10-13
申请人： Katsumi Uesaka , Kuniaki Ishihara , Yutaka Oonishi
发明人： Katsumi Uesaka , Kuniaki Ishihara , Yutaka Oonishi
IPC分类号： H01L21/00 , G01R31/26
CPC分类号： H01S5/0042 , H01S5/024 , H01S5/12 , H01S5/1231 , H01S5/2275 , H01S5/4031 , H01S2304/04
摘要： A method to manufacture an optical device with enhanced high frequency performance is disclosed. The method includes steps of: (a) forming semiconductor layers on a semiconductor substrate, (b) etching the semiconductor layers by using a mask to form a plurality of diffraction gratings, where the mask provides a plurality of periodic patterns each corresponding to respective gratings and having a specific pitch different from others, (c) forming an active layer on the etched semiconductor layers, (d) measuring a maximum optical gain of the active layer, (e) selecting one of diffraction gratings based on the measured optical gain, and (f) forming a current confinement structure aligned with the selected diffraction grating.
摘要翻译：公开了制造具有增强的高频性能的光学器件的方法。该方法包括以下步骤：（a）在半导体衬底上形成半导体层，（b）通过使用掩模蚀刻半导体层以形成多个衍射光栅，其中掩模提供多个每个对应于各个光栅的周期性图案（c）在蚀刻的半导体层上形成有源层，（d）测量有源层的最大光学增益，（e）基于所测量的光学增益来选择一个衍射光栅，和（f）形成与所选衍射光栅对准的电流限制结构。

6. 发明申请

US20120134619A1 OPTICAL MODULATION APPARATUS, METHOD FOR CONTROLLING OPTICAL MODULATOR, AND CONTROL DEVICE FOR OPTICAL MODULATOR 有权
标题翻译：光学调制装置，控制光学调制器的方法和用于光学调制器的控制装置
公开(公告)号：US20120134619A1
公开(公告)日：2012-05-31
申请号：US13306329
申请日：2011-11-29
申请人： Morihiro Seki , Katsumi Uesaka
发明人： Morihiro Seki , Katsumi Uesaka
IPC分类号： G02F1/035
CPC分类号： H04B10/50575 , G02F1/0123 , G02F1/2255 , G02F1/2257 , H04B10/5057
摘要： An optical modulation apparatus including: a Mach-Zehnder optical modulator having two optical waveguides, two output optical waveguides and a join-and-branch portion; a phase adjustment circuit configured to output a phase control signal to phase adjustment electrodes provided respectively on the two optical waveguides; a drive circuit configured to output a modulation signal to modulation electrodes provided respectively on the two optical waveguides as a differential signal, the modulation signal modulating lights propagated in the two optical waveguides; and a signal polarity reversal circuit configured to reverse a polarity of the differential signal to be output from the drive circuit.
摘要翻译：一种光调制装置，包括：具有两个光波导的Mach-Zehnder光调制器，两个输出光波导和一个接合分支部分; 相位调整电路，被配置为将相位控制信号输出到分别设置在所述两个光波导上的相位调整电极; 驱动电路，被配置为将调制信号输出到分别设置在两个光波导上的调制电极作为差分信号，调制信号调制在两个光波导中传播的光; 以及信号极性反转电路，被配置为使从驱动电路输出的差分信号的极性反转。

7. 发明授权

US07978741B2 Optical transmitter with a shunt driving configuration and a load transistor operated in common gate mode 有权
标题翻译：具有并联驱动配置的光发射机和在共门模式下工作的负载晶体管
公开(公告)号：US07978741B2
公开(公告)日：2011-07-12
申请号：US11808559
申请日：2007-06-11
申请人： Katsumi Uesaka
发明人： Katsumi Uesaka
IPC分类号： H01S3/00
CPC分类号： H01S5/0683 , H01S5/06825
摘要： The invention provides an optical transmitter that prevents the high frequency components in the driving signal from leaking to the external power supply in a wider frequency range. The transmitter provides a shun driving configuration with a switching transistor connected in parallel to the laser diode and a load transistor connected in serial to the parallel circuit of the switching transistor and the laser diode. The load transistor operates in the common base configuration, or the common gate configuration, by which the input impedance viewed from the laser diode becomes large, while, the output impedance viewed from the external power source becomes small. Thus, the high frequency components in the driving signal applied to the switching transistor can be suppresses to appear in the external power source.
摘要翻译：本发明提供了一种防止驱动信号中的高频分量在较宽频率范围内泄漏到外部电源的光发射机。发射器提供顺时针驱动配置，其中开关晶体管与激光二极管并联连接，负载晶体管串联连接到开关晶体管和激光二极管的并联电路。负载晶体管工作在从激光二极管观察的输入阻抗变大的公共基极配置或公共栅极配置中，而从外部电源观察的输出阻抗变小。因此，可以抑制施加到开关晶体管的驱动信号中的高频分量出现在外部电源中。

8. 发明申请

US20100172657A1 OPTICAL RECEIVER WITH TRANS-IMPEDANCE RESPONDING IN BIT-BY-BIT TO INPUT SIGNAL 有权
标题翻译：光纤接收器在逐位转移到输入信号的情况下具有跨阻抗
公开(公告)号：US20100172657A1
公开(公告)日：2010-07-08
申请号：US12651632
申请日：2010-01-04
申请人： Katsumi UESAKA
发明人： Katsumi UESAKA
IPC分类号： H04B10/06
CPC分类号： H04B10/693 , H03F1/083 , H03F3/08
摘要： An optical receiver implemented with a pre-amplifier with an additional trans-impedance able to respond to the input signal in bit-by-bit is disclosed. The optical receiver provides a photodiode to convert an optical signal into a photocurrent, a trans-impedance amplifier to convert the photocurrent to a voltage signal, and an additional trans-impedance circuit able to respond instantaneously to the voltage signal. The additional trans-impedance includes a FET whose gate is fully fixedly biased and the source thereof receives the voltage signal. The FET may bypass the current flowing in the intrinsic trans-impedance instantaneously.
摘要翻译：公开了一种使用具有能够逐比特地响应输入信号的额外的跨阻器的前置放大器实现的光学接收器。光接收器提供光电二极管以将光信号转换成光电流，将反射阻抗放大器转换成电压信号的电阻，以及能够瞬时响应于电压信号的额外的跨阻抗电路。额外的跨阻抗包括一个FET，其门完全固定偏置，其源极接收电压信号。 FET可以瞬时旁路在本征反阻抗中流动的电流。

9. 发明申请

US20090238226A1 DRIVER CIRCUIT FOR SEMICONDUCTOR LASER DIODE DRIVEN IN DIFFERENTIAL MODE 有权
标题翻译：以不同模式驱动的半导体激光二极管的驱动电路
公开(公告)号：US20090238226A1
公开(公告)日：2009-09-24
申请号：US12402671
申请日：2009-03-12
申请人： Akihiro MOTO , Katsumi UESAKA
发明人： Akihiro MOTO , Katsumi UESAKA
IPC分类号： H01S3/00
CPC分类号： H01S5/042 , H01S5/0427 , H01S5/0683
摘要： A driver circuit for a semiconductor laser diode (LD) is disclosed, in which the driver circuit drives the LD in the differential mode and lowers the power consumption thereof. The driver circuit includes a differential unit to provide the modulation current to the LD, a voltage converter to provide a positive power supply to the differential unit, a detector to detect the common mode voltage of the differential outputs of the unit, and a comparing unit to control the voltage converter dynamically such that the output common mode voltage is set in a preset reference level.
摘要翻译：公开了一种用于半导体激光二极管（LD）的驱动电路，其中驱动电路以差分模式驱动LD并降低其功耗。驱动器电路包括向LD提供调制电流的差分单元，向差分单元提供正电源的电压转换器，用于检测单元的差分输出的共模电压的检测器，以及比较单元以动态地控制电压转换器，使得输出共模电压被设置在预设的参考电平。

10. 发明授权

US07483459B2 Laser driver with selectable output impedance 有权
标题翻译：具有可选输出阻抗的激光驱动器
公开(公告)号：US07483459B2
公开(公告)日：2009-01-27
申请号：US11583039
申请日：2006-10-19
申请人： Katsumi Uesaka , Keiji Tanaka
发明人： Katsumi Uesaka , Keiji Tanaka
IPC分类号： H01S3/00 , H01S3/04
CPC分类号： H01S5/042
摘要： The present invention is to provide a laser driver able to select configurations for the high speed application and for the lower speed and the lower power dissipation. The laser driver of the present invention provides a pair of transistors with the differential configuration whose outputs are complementary to each other, and a pair of load circuits connected between respective outputs of the paired transistor and the power supply line. Two outputs of the paired transistor are also connected to the anode and cathode of the laser diode and two load circuits each includes a switch to isolate the output of the transistor from the power supply line to vary the output impedance of the laser driver.
摘要翻译：本发明提供一种激光驱动器，其能够选择用于高速应用和低速度以及较低功耗的配置。本发明的激光驱动器提供一对具有彼此互补的差分配置的晶体管，以及连接在成对晶体管和电源线的各个输出端之间的一对负载电路。成对晶体管的两个输出也连接到激光二极管的阳极和阴极，并且两个负载电路各自包括用于将晶体管的输出与电源线隔离的开关，以改变激光驱动器的输出阻抗。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式