公开(公告)号：US07787781B2

公开(公告)日：2010-08-31

申请号：US11593138

申请日：2006-11-06

Applicant: Tetsu Murayama

Inventor： Tetsu Murayama

IPC: H04B10/06 ,  H01S3/00

CPC classification number: H04B10/077 ,  H04B10/07955 ,  H04B10/66

Abstract: The present invention is to provide an optical receiver that prohibits the miss-detection of the recovery from the LOS (Loss-Of-Signal) state. The optical receiver includes an light-receiver device for converting an optical input signal to a photo-current, a pre-amplifier for converting this photo-current into a voltage signal, and a LOS detector to detect the LOS state based on the output from the pre-amplifier. The LOS detector includes a bottom hold that detects and keeps the bottom level of the output from the pre-amplifier and the comparator that sets the output thereof when the output from the bottom hold exceeds the threshold VTH(−).

Abstract translation: 本发明是提供一种禁止从LOS（信号丢失）状态恢复的错误检测的光接收机。 光接收器包括用于将光输入信号转换为光电流的光接收器件，用于将该光电流转换成电压信号的前置放大器，以及LOS检测器，用于根据来自 前置放大器。 LOS检测器包括底部保持，当底部保持的输出超过阈值VTH（ - ）时，检测并保持来自前置放大器的输出的底部电平和设置其输出的比较器。

公开(公告)号：US20070104494A1

公开(公告)日：2007-05-10

申请号：US11593138

申请日：2006-11-06

Applicant: Tetsu Murayama

Inventor： Tetsu Murayama

IPC: H04B10/06

CPC classification number: H04B10/077 ,  H04B10/07955 ,  H04B10/66

Abstract: The present invention is to provide an optical receiver that prohibits the miss-detection of the recovery from the LOS (Loss-Of-Signal) state. The optical receiver includes an light-receiver device for converting an optical input signal to a photo-current, a pre-amplifier for converting this photo-current into a voltage signal, and a LOS detector to detect the LOS state based on the output from the pre-amplifier. The LOS detector includes a bottom hold that detects and keeps the bottom level of the output from the pre-amplifier and the comparator that sets the output thereof when the output from the bottom hold exceeds the threshold VTH(−).

Abstract translation: 本发明是提供一种禁止从LOS（信号丢失）状态恢复的错误检测的光接收机。 光接收器包括用于将光输入信号转换为光电流的光接收器件，用于将该光电流转换成电压信号的前置放大器，以及LOS检测器，用于根据来自 前置放大器。 LOS检测器包括底部保持器，其检测并保持来自前置放大器和比较器的输出的底部电平，当来自底部保持器的输出超过阈值V TH（ - ）时，其设置其输出。 SUB>。

公开(公告)号：US08520199B2

公开(公告)日：2013-08-27

申请号：US13118896

申请日：2011-05-31

Applicant: Tetsu Murayama ,  Moriyasu Ichino

Inventor： Tetsu Murayama ,  Moriyasu Ichino

IPC: G01J1/42

CPC classification number: G01J1/44 ,  G01J2001/444

Abstract: A method to monitor an output of an APD is disclosed. The method includes steps of, (a) measuring dark currents of the APD at several temperatures in advance to a practical operation of the APD, (b) measuring an output current of the APD by illuminating the APD practically at a measured temperature, (c) estimating a dark current at the measured temperature from measured dark currents, and (d) subtracting the estimated dark current from the output current.

Abstract translation: 公开了一种监视APD输出的方法。 该方法包括以下步骤：（a）预先在几个温度下测量APD的暗电流到APD的实际操作;（b）通过在测量的温度下实际照射APD来测量APD的输出电流，（c ）从测量的暗电流估计在测量的温度下的暗电流，以及（d）从输出电流中减去估计的暗电流。

公开(公告)号：US20110292381A1

公开(公告)日：2011-12-01

申请号：US13118896

申请日：2011-05-31

Applicant: Tetsu MURAYAMA ,  Moriyasu Ichino

Inventor： Tetsu MURAYAMA ,  Moriyasu Ichino

IPC: G01J1/42

CPC classification number: G01J1/44 ,  G01J2001/444

Abstract: A method to monitor an output of an APD is disclosed. The method includes steps of, (a) measuring dark currents of the APD at several temperatures in advance to a practical operation of the APD, (b) measuring an output current of the APD by illuminating the APD practically at a measured temperature, (c) estimating a dark current at the measured temperature from measured dark currents, and (d) subtracting the estimated dark current from the output current.

Abstract translation: 公开了一种监视APD输出的方法。 该方法包括以下步骤：（a）预先在几个温度下测量APD的暗电流至APD的实际操作;（b）通过在测量的温度下实际照射APD来测量APD的输出电流，（c ）从测量的暗电流估计在测量的温度下的暗电流，以及（d）从输出电流中减去估计的暗电流。