公开(公告)号：US07196310B2

公开(公告)日：2007-03-27

申请号：US10994461

申请日：2004-11-23

Applicant: Ken-ichi Nakamoto ,  Satoshi Ide ,  Kazuyuki Mori ,  Hiromasa Tanaka

Inventor： Ken-ichi Nakamoto ,  Satoshi Ide ,  Kazuyuki Mori ,  Hiromasa Tanaka

IPC: H03F3/08

CPC classification number: H03K5/1565 ,  H03F3/087 ,  H03F2200/321 ,  H03F2200/462 ,  H03F2200/465 ,  H04B10/66

Abstract: A light receiving device is disclosed by which a reception characteristic of a light receiving system can be improved. The light receiving device includes a photoelectric conversion element for receiving a light signal and performing photoelectric conversion of the light signal, and a data detection section for using an decision level for the light signal received by the photoelectric conversion element to detect modulation data included in the light signal. The light received device further includes an decision level control section for feedforward controlling the decision level to be used by the data detection section based on a level of the received light signal.

Abstract translation: 公开了一种可以改善光接收系统的接收特性的光接收装置。 光接收装置包括用于接收光信号并执行光信号的光电转换的光电转换元件，以及数据检测部分，用于使用由光电转换元件接收的光信号的判定电平来检测包含在光信号中的调制数据 光信号。 光接收装置还包括判定电平控制部分，用于基于所接收的光信号的电平，前馈控制由数据检测部分使用的判定电平。

公开(公告)号：US20050191057A1

公开(公告)日：2005-09-01

申请号：US10871038

申请日：2004-06-21

Applicant: Ken-ichi Nakamoto ,  Tamotsu Akashi ,  Kazuyuki Mori ,  Shin-ichi Sakuramoto

Inventor： Ken-ichi Nakamoto ,  Tamotsu Akashi ,  Kazuyuki Mori ,  Shin-ichi Sakuramoto

IPC: G02B6/42 ,  H01L23/04 ,  H01L27/14 ,  H01L27/15 ,  H01L31/02 ,  H01L31/0232 ,  H01R4/02 ,  H01S5/022 ,  H01S5/026 ,  H04B10/00

CPC classification number: G02B6/4201 ,  G02B6/4246 ,  G02B6/4277 ,  H01L2924/19107 ,  H01R4/021 ,  H01R13/6461

Abstract: An optical transceiver module is constituted so as to have an optical transmission module, an optical receiving module, a drive circuit board for driving the optical transmission module and the optical receiving module, and short-circuit means which induces an electrical short circuit between housings of the respective modules or induces an electrical short circuit between ground (GND) terminals of the respective modules on the module sides with respect to the drive circuit board. As a result, in the optical transceiver module, stray capacitance and stray inductance in lead pins, housings, and internal components of optical devices, such as an LD and a PD, are removed, thereby suppressing fluctuations in the potential (GND) of an LD housing which arise during high-frequency driving operation, as well as considerably suppressing electrical crosstalk between the transmission and receiving modules.

Abstract translation: 光收发器模块被构造成具有光传输模块，光接收模块，用于驱动光传输模块和光接收模块的驱动电路板，以及在壳体之间引起电短路的短路装置 相应的模块或在模块侧的相应模块的接地（GND）端子之间相对于驱动电路板引起电短路。 结果，在光收发器模块中，消除了诸如LD和PD之类的光学器件的引脚，外壳和内部元件中的杂散电容和杂散电感，从而抑制了电位（GND）的波动 LD壳体在高频驱动操作期间出现，并且显着地抑制了发送和接收模块之间的电串扰。

公开(公告)号：US20080031638A1

公开(公告)日：2008-02-07

申请号：US11607846

申请日：2006-12-04

Applicant: Ken-ichi Nakamoto ,  Satoshi Ide

Inventor： Ken-ichi Nakamoto ,  Satoshi Ide

IPC: H04B10/06

CPC classification number: H04B10/697 ,  H04B10/693

Abstract: An optical reception circuit and an identification level controlling method for an optical reception circuit are disclosed wherein reception sensitivity degradation arising from transmission waveform degradation by chromatic dispersion can be suppressed. The optical reception circuit includes a photoelectric converter for converting reception light into an electric signal, a pre-amplifying unit for amplifying the electric signal, a main amplifier for amplifying an output of the pre-amplifying unit, a monitor for monitoring the output of the pre-amplifying unit, and a controller for controlling an identification level in the main amplifier based on an output of the monitor. The monitor includes a limiter amplifier for amplifying the output of the pre-amplifying unit, and an average value detector for detecting a time average value of an output amplitude of the limiter amplifier.

Abstract translation: 公开了一种用于光接收电路的光接收电路和识别电平控制方法，其中可以抑制由色散的传输波形恶化引起的接收灵敏度劣化。 光接收电路包括用于将接收光转换为电信号的光电转换器，用于放大电信号的预放大单元，用于放大预放大单元的输出的主放大器，用于监视预放大单元的输出的监视器 预放大单元和用于基于监视器的输出来控制主放大器中的识别电平的控制器。 监视器包括用于放大预放大单元的输出的限幅放大器和用于检测限幅放大器的输出幅度的时间平均值的平均值检测器。

公开(公告)号：US07720394B2

公开(公告)日：2010-05-18

申请号：US11607846

申请日：2006-12-04

Applicant: Ken-ichi Nakamoto ,  Satoshi Ide

Inventor： Ken-ichi Nakamoto ,  Satoshi Ide

IPC: H04B10/06

CPC classification number: H04B10/697 ,  H04B10/693

Abstract: An optical reception circuit and an identification level controlling method for an optical reception circuit are disclosed wherein reception sensitivity degradation arising from transmission waveform degradation by chromatic dispersion can be suppressed. The optical reception circuit includes a photoelectric converter for converting reception light into an electric signal, a pre-amplifying unit for amplifying the electric signal, a main amplifier for amplifying an output of the pre-amplifying unit, a monitor for monitoring the output of the pre-amplifying unit, and a controller for controlling an identification level in the main amplifier based on an output of the monitor. The monitor includes a limiter amplifier for amplifying the output of the pre-amplifying unit, and an average value detector for detecting a time average value of an output amplitude of the limiter amplifier.

Abstract translation: 公开了一种用于光接收电路的光接收电路和识别电平控制方法，其中可以抑制由色散的传输波形恶化引起的接收灵敏度劣化。 光接收电路包括用于将接收光转换为电信号的光电转换器，用于放大电信号的预放大单元，用于放大预放大单元的输出的主放大器，用于监视预放大单元的输出的监视器 预放大单元和用于基于监视器的输出来控制主放大器中的识别电平的控制器。 监视器包括用于放大预放大单元的输出的限幅放大器和用于检测限幅放大器的输出幅度的时间平均值的平均值检测器。

公开(公告)号：US20060043266A1

公开(公告)日：2006-03-02

申请号：US10994461

申请日：2004-11-23

Applicant: Ken-ichi Nakamoto ,  Satoshi Ide ,  Kazuyuki Mori ,  Hiromasa Tanaka

Inventor： Ken-ichi Nakamoto ,  Satoshi Ide ,  Kazuyuki Mori ,  Hiromasa Tanaka

IPC: H01J40/14

CPC classification number: H03K5/1565 ,  H03F3/087 ,  H03F2200/321 ,  H03F2200/462 ,  H03F2200/465 ,  H04B10/66

Abstract: A light receiving device is disclosed by which a reception characteristic of a light receiving system can be improved. The light receiving device includes a photoelectric conversion element for receiving a light signal and performing photoelectric conversion of the light signal, and a data detection section for using an decision level for the light signal received by the photoelectric conversion element to detect modulation data included in the light signal. The light received device further includes an decision level control section for feedforward controlling the decision level to be used by the data detection section based on a level of the received light signal.

Abstract translation: 公开了一种可以改善光接收系统的接收特性的光接收装置。 光接收装置包括用于接收光信号并执行光信号的光电转换的光电转换元件，以及数据检测部分，用于使用由光电转换元件接收的光信号的判定电平来检测包含在光信号中的调制数据 光信号。 光接收装置还包括判定电平控制部分，用于基于所接收的光信号的电平，前馈控制由数据检测部分使用的判定电平。