公开(公告)号：US5274325A

公开(公告)日：1993-12-28

申请号：US852661

申请日：1992-03-17

申请人： Mitsuru Shinagawa ,  Tadao Nagatsuma

发明人： Mitsuru Shinagawa ,  Tadao Nagatsuma

IPC分类号： G01R31/311 ,  G01R29/12

CPC分类号： G01R31/311

摘要： A method for electro-optic sampling measurement of electrical signals in integrated circuits, capable of improving the reproducibility of the measurements and calibrating the voltage accurately. The changes of beam intensity of a laser beam reflected from an electro-optic probe is measured by using a low frequency signal of a known voltage level to determine a relationship between the changes of beam intensity and gaps between the electro-optic probe and the integrated circuit, then a proportionality of the change of beam intensity and an absolute voltage level for a desired gap is determined according to the determined relationship. Then, the change of beam of intensity at a desired measurement position with a desired gap is measured by using a high frequency signal and the absolute voltage level of the high frequency signal is determined according to the measured change of beam intensity and the determined proportionality. The electro-optic probe is positioned by first bringing the electro-optic probe into a contact with the integrated circuit to detect a contact position, and then moving the electro-optic probe away from the integrated circuit to provide a desired gap with respect to the detected contact position regarded as a reference point.

摘要翻译： 一种用于集成电路中电信号电光采样测量的方法，能够提高测量的再现性并准确地校准电压。 通过使用已知电压电平的低频信号来测量从电光探头反射的激光束的光束强度的变化，以确定光束强度的变化与电光探头与集成的电光探针之间的间隙之间的关系 然后根据确定的关系确定波束强度变化和所需间隙的绝对电压电平的比例。 然后，通过使用高频信号测量具有期望间隙的期望测量位置处的强度光束的变化，并且根据测量的光束强度的变化和所确定的比例来确定高频信号的绝对电压电平。 通过首先将电光探头与集成电路接触以检测接触位置，然后将电光探头移离集成电路，以提供相对于该电光探针的期望间隙，来定位电光探头 检测到的接触位置被认为是参考点。

公开(公告)号：US20180238949A1

公开(公告)日：2018-08-23

申请号：US15753585

申请日：2016-10-07

申请人： Mitsuru Shinagawa ,  JX Nippon Mining & Metals Corporation

发明人： Mitsuru Shinagawa ,  Toshiaki Asahi

IPC分类号： G01R29/08 ,  G01R1/07 ,  H01L31/0232 ,  G02B27/09 ,  H01S3/00

CPC分类号： G01R29/0885 ,  G01R1/071 ,  G01R15/242 ,  G02B27/0977 ,  H01L31/02327 ,  H01S3/0064

摘要： In an optical modulator capable of modulating incident laser beam L by a compound semiconductor single crystal having a property of generating an electro-optic effect, the attenuation of the signal strength in a low frequency band is prevented without lowering the carrier concentration of the compound semiconductor.The optical modulator 23 comprises: incidence limiting means 25 which is provided on or near an incidence plane 24a, on which the laser beam L can be incident, of the compound semiconductor single crystal 24 so as to limit incidence of light other than the laser beam L on the incidence plane 24a; and a shielding member 26 which is formed from a low-permittivity material having a light blocking effect, and covers a surface 24c of the compound semiconductor single crystal 24 extending along a traveling direction of the laser beam L that entered the compound semiconductor single crystal 24.

公开(公告)号：US08666312B2

公开(公告)日：2014-03-04

申请号：US12531927

申请日：2008-03-21

申请人： Ryusuke Kawano ,  Katsuyuki Ochiai ,  Mitsuru Shinagawa ,  Yuichi Kado ,  Takuji Harada ,  Hideyuki Okamoto ,  Ryoichi Matsumoto

发明人： Ryusuke Kawano ,  Katsuyuki Ochiai ,  Mitsuru Shinagawa ,  Yuichi Kado ,  Takuji Harada ,  Hideyuki Okamoto ,  Ryoichi Matsumoto

IPC分类号： H04B5/00

CPC分类号： H04B13/005

摘要： A signal electrode (11A) and a ground electrode (11B) are disposed respectively on surfaces of a case (10). In this way, the signal electrode (11A) and the ground electrode (11B) do not come into contact with any electric component, such as a transmission circuit (21), disposed inside the case (10), and thus a reduction in an electric field (Ec) induced in an electric-field transmission medium can be prevented. In addition, a certain distance between the signal electrode (11A) and the ground electrode (11B) is kept, and thus a reduction in the electric field (Ec) induced in the electric-field transmission medium can be prevented. Furthermore, the contactability between the signal electrode (11A) and the electric-field transmission medium is improved, and thus the electric field (Ec) induced in the electric-field transmission medium can be increased.

摘要翻译： 信号电极（11A）和接地电极（11B）分别设置在壳体（10）的表面上。 以这种方式，信号电极（11A）和接地电极（11B）不与布置在壳体（10）内部的诸如传输电路（21）的任何电气部件接触，因此， 可以防止在电场传输介质中感应的电场（Ec）。 此外，保持信号电极（11A）和接地电极（11B）之间的一定距离，从而可以防止在电场传输介质中感应的电场（Ec）的减小。 此外，信号电极（11A）和电场传输介质之间的接触性提高，因此可以增加在电场传输介质中感应的电场（Ec）。

公开(公告)号：US07493047B2

公开(公告)日：2009-02-17

申请号：US11756255

申请日：2007-05-31

申请人： Mitsuru Shinagawa ,  Haruka Kyuragi

发明人： Mitsuru Shinagawa ,  Haruka Kyuragi

IPC分类号： H04B10/00

CPC分类号： G01D21/00 ,  G06F1/163 ,  H04B13/005 ,  Y02D70/20

摘要： In a transceiver for inducing electric fields based on data to be transmitted in an electric field propagating medium and carrying out transmission and reception of data by using induced electric fields, having a transmission electrode and a transmission circuit, a transmission side switch is provided to disconnect the transmission circuit from the transmission electrode, when the transceiver is not in a transmission state in which the transmission circuit is supplying the transmission data to the transmission electrode.

摘要翻译： 在基于要在电场传播介质中传输的数据并通过使用感应电场进行数据发送和接收的诱发电场的收发器中，具有发送电极和发送电路，提供发送侧开关以断开 当收发器不处于发送电路向发送电极提供发送数据的发送状态时，来自发送电极的发送电路。

公开(公告)号：US06567760B1

公开(公告)日：2003-05-20

申请号：US09300288

申请日：1999-04-27

申请人： Jun Kikuchi ,  Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Jun Kikuchi ,  Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G06F1700

CPC分类号： G01R13/347

摘要： An electro-optic sampling oscilloscope (or EOS oscilloscope) uses an electro-optic probe containing an electro-optic crystal, which is placed under effect of an electric field caused by a measured signal. Laser pulses are supplied to the electro-optic crystal wherein they are subjected to polarization. Then, measurement data representative of a waveform of the measured signal are produced in response to polarization states of the laser pulses and are stored in a measurement data storage. A user can select specific measurement data by using a list of files of multiple measurement data which is displayed on a screen. Then, the EOS oscilloscope displays an outline waveform which is created based on a reduced number of sample points extracted from the selected measurement data. Comments and/or measurement conditions can be stored in the measurement data storage in relation to the measurement data, so that they are adequately displayed on the screen.

摘要翻译： 电光采样示波器（或EOS示波器）使用包含电光晶体的电光探头，电光晶体由测量信号引起的电场的影响。 将激光脉冲提供给电光晶体，其中它们经受极化。 然后，响应于激光脉冲的偏振状态产生表示测量信号的波形的测量数据，并存储在测量数据存储器中。 用户可以通过使用显示在屏幕上的多个测量数据的文件列表来选择特定的测量数据。 然后，EOS示波器显示基于从所选择的测量数据中提取的减少数量的采样点创建的轮廓波形。 注释和/或测量条件可以相对于测量数据存储在测量数据存储器中，使得它们被充分地显示在屏幕上。

公开(公告)号：US06429669B1

公开(公告)日：2002-08-06

申请号：US09620066

申请日：2000-07-20

申请人： Akishige Ito ,  Katsushi Ohta ,  Toshiyuki Yagi ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Hakaru Kyuragi

发明人： Akishige Ito ,  Katsushi Ohta ,  Toshiyuki Yagi ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Hakaru Kyuragi

IPC分类号： G01R31308

CPC分类号： G01R1/071

摘要： In order to maintain accuracy of measurement, a temperature-insensitive electro-optic probe has a laser diode provided to emit a laser beam based on a control signal of an oscilloscope body, a collimator lens provided to convert the laser beam into a parallel beam; an electro-optic element having on an end face thereof a reflective coating, with the optical characteristics which are changed by propagating an electrical field via a metal pin provided at the end face on the reflective coating side, an isolator provided between the collimator lens and the electro-optic element, and adapted to transmit the laser beam emitted from the laser diode, in order to separate a light reflected by the reflective coating from the laser beam, a photodiode provided to convert the reflected light separated by the isolator into an electrical signal, a temperature detection section arranged to be in contact with optical components consisting the isolator, and to detect the temperature of the optical components and output the result of the detection, a temperature adjustment section arranged to be in contact with the laser diode, and to adjust the temperature of the laser diode based on the result of the temperature detection, and a temperature control unit provided to control the temperature adjustment section based on the result of the temperature detection.

摘要翻译： 为了保持测量的准确性，温度不敏感的电光探头具有基于示波器主体的控制信号发射激光束的激光二极管，用于将激光束转换成平行光束的准直透镜; 电光元件在其端面上具有反射涂层，其光学特性通过经由设置在反射涂层侧的端面处的金属销传播电场而改变;隔离器，设置在准直透镜和 电光元件，并且适于透射从激光二极管发射的激光束，以便将由反射涂层反射的光与激光束分离;光电二极管，用于将由隔离器分离的反射光转换为电 信号，温度检测部分，布置成与由隔离器组成的光学部件接触，并且检测光学部件的温度并输出检测结果;布置成与激光二极管接触的温度调节部分，以及 基于温度检测的结果来调节激光二极管的温度，并提供温度控制单元 基于温度检测的结果控制温度调节部。

公开(公告)号：US06407561B1

公开(公告)日：2002-06-18

申请号：US09578963

申请日：2000-05-25

申请人： Akishige Ito ,  Katsushi Ohta ,  Toshiyuki Yagi ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Akishige Ito ,  Katsushi Ohta ,  Toshiyuki Yagi ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G01R31308

CPC分类号： G01R1/071

摘要： A probe for an electro-optic sampling oscilloscope is provided, capable of obtaining an improved accuracy in measurement of the test measuring signals by controlling a temperature of an electro-optic element so as to be maintained at a constant such that the refractive index of the electro-optic element does not change due to the temperature change. The probe for the electro-optic sampling oscilloscope comprises a reflecting film at one end and a metal pin provided on the surface of the reflecting film such that the optical property of the electro-optic film changes according to an electric field applied through the metal pin. The probe further comprises a temperature detecting portion, disposed so as to contact with the electro-optic element, for detecting and outputting the temperature of the electro-optic element, a temperature adjusting portion, disposed so as to contact with the electro-optic element facing the temperature detecting portion about the electro-optic element, and a temperature controlling portion for controlling the temperature adjusting portion based on the result of the temperature detection.

摘要翻译： 提供了一种用于电光采样示波器的探针，其能够通过控制电光元件的温度来获得测试测量信号的测量精度，从而保持恒定，使得 电光元件不会因温度变化而变化。 用于电光取样示波器的探针包括一端的反射膜和设置在反射膜的表面上的金属针，使得电光膜的光学特性根据通过金属引脚施加的电场而改变 。 探头还包括设置成与电光元件接触的温度检测部分，用于检测和输出电光元件的温度，温度调节部分，设置成与电光元件接触 面对围绕电光元件的温度检测部分，以及温度控制部分，用于基于温度检测的结果来控制温度调节部分。

公开(公告)号：US06403946B1

公开(公告)日：2002-06-11

申请号：US09513788

申请日：2000-02-25

申请人： Fumio Akikuni ,  Katsushi Ohta ,  Tadao Nagatsuma ,  Mitsuru Shinagawa ,  Junzo Yamada

发明人： Fumio Akikuni ,  Katsushi Ohta ,  Tadao Nagatsuma ,  Mitsuru Shinagawa ,  Junzo Yamada

IPC分类号： G01R31303

CPC分类号： G01R1/071

摘要： An electro-optic sampling probe for preventing noise from being transmitted to photodiodes and improving the measurement accuracy is disclosed. In the probe, the optical system module comprises wavelength plates and polarized beam splitters arranged along an optical path of the relevant laser beam, and photodiodes facing the polarized beam splitters, wherein each photodiode is fixed via an insulating material to the main frame of the optical system module.

摘要翻译： 公开了一种用于防止噪声传输到光电二极管并提高测量精度的电光采样探头。 在探针中，光学系统模块包括沿着相关激光束的光路布置的波长板和偏振分束器，以及面向偏振分束器的光电二极管，其中每个光电二极管经由绝缘材料固定到光学主体 系统模块

公开(公告)号：US06384590B1

公开(公告)日：2002-05-07

申请号：US09437155

申请日：1999-11-10

申请人： Jun Kikuchi ,  Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

发明人： Jun Kikuchi ,  Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Nobukazu Banjo ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Junzo Yamada

IPC分类号： G06G719

CPC分类号： G01R13/347

摘要： In a light receiving circuit for use in electro-optic sampling oscilloscope which receives first and second optical, photodiodes 51 and 52 are connected in series between a positive bias power supply 50P and a negative bias power supply 50N. The photodiodes 51 and 52 receive optical signals whose polarization state correspond to the voltage of a signal to be measured and convert the thus-received optical signals into electric signals. An amplifier 53 amplifies an electric current appearing in a point of connection P between the photodiodes 51 and 52. A current monitor 54 detects the electric signal converted by the photodiode 51, and a current monitor 57 detects the electric signal converted by the photodiode 52. The electric signal detected by the current monitor 54 is subjected to analog-to-digital conversion by an analog-to-digital converter 55, and the electric signal detected by the current monitor 57 is subjected to analog-to-digital conversion by an analog-to-digital converter 58. A control section formed from a subtraction circuit 60 controls a ratio of polarization between the optical signals such that the difference between the value of the current detected by the current monitor 54 and the value of the current detected by the current monitor 57 becomes smaller.

摘要翻译： 在接收第一和第二光学电光采样示波器的光接收电路中，光电二极管51和52串联连接在正偏压电源50P和负偏压电源50N之间。 光电二极管51和52接收光信号，其偏振状态对应于待测信号的电压，并将所接收的光信号转换为电信号。 放大器53放大出现在光电二极管51和52之间的连接点P处的电流。电流监视器54检测由光电二极管51转换的电信号，电流监视器57检测由光电二极管52转换的电信号。 由电流监视器54检测的电信号由模数转换器55进行模数转换，由电流监视器57检测的电信号经模拟数字转换 数字转换器58.由减法电路60形成的控制部分控制光信号之间的偏振比，使得由电流监视器54检测的电流值与由电流检测器检测到的电流值之差 电流监视器57变小。

公开(公告)号：US06310507B1

公开(公告)日：2001-10-30

申请号：US09167303

申请日：1998-10-06

申请人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Kazuyoshi Matsuhiro

发明人： Nobuaki Takeuchi ,  Yoshiki Yanagisawa ,  Jun Kikuchi ,  Yoshio Endou ,  Mitsuru Shinagawa ,  Tadao Nagatsuma ,  Kazuyoshi Matsuhiro

IPC分类号： G06F104

CPC分类号： G01R13/347

摘要： The present invention relates to an electro-optic sampling oscilloscope which carries out measurement of a measured signal using an optical pulse generated based on a timing signal from a timing generation circuit. The timing generation circuit includes a frequency measurement circuit which generates a gate signal for a gate interval which is a specified multiple N of the cycle of the desired sampling rate, and counts the input trigger signals during the gate interval of the gate signal; a division circuit which divides the count value of said frequency measurement circuit by the specified multiple N, and determines a divider ratio; and a frequency divider which divides the trigger signals by the divider ratio determined by the division circuit, and outputs the result as the timing signal.

摘要翻译： 本发明涉及一种电光采样示波器，其使用基于来自定时发生电路的定时信号产生的光脉冲来执行测量信号的测量。 定时产生电路包括频率测量电路，其生成门间隔的门信号，该门间隔是期望采样率的周期的指定倍数N，并且在门信号的门间隔期间对输入触发信号进行计数; 分频电路，将所述频率测量电路的计数值除以指定的倍数N，并确定分频比; 以及分频器，其将触发信号除以由除法电路确定的分频比，并将该结果作为定时信号输出。