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    • 1. 发明申请
    • Electric Field Measuring Apparatus
    • 电场测量装置
    • US20130045008A1
    • 2013-02-21
    • US13580725
    • 2011-02-21
    • Norikazu MiyazakiTakeshi SakaiMasahito Mure
    • Norikazu MiyazakiTakeshi SakaiMasahito Mure
    • H04B10/08
    • G01R29/0871G01R29/0885
    • An electric field measuring apparatus measures electric field intensity of an electromagnetic wave generated from equipment under test installed in an area in which electromagnetic waves are detected. The apparatus includes an antenna, an RF amplifier amplifying an output signal of the antenna, a signal intensity detector detecting whether intensity of the output signal is higher than a predetermined level, a signal generator generating a detection result signal on the basis of a detection result of the signal intensity detector, a multiplexer multiplexing an output signal of the RF amplifier, the detection result signal, and a DC bias voltage, and an optical intensity modulator having a Mach-Zehnder type optical waveguide performing an optical modulation operation on the basis of an output signal of the multiplexer are arranged inside the area. Arranged outside the area are a light source unit, a receiver unit, a DC bias controller, and a display unit.
    • 电场测量装置测量安装在检测到电磁波的区域中的被测设备产生的电磁波的电场强度。 该装置包括天线,放大天线的输出信号的RF放大器,检测输出信号的强度是否高于预定电平的信号强度检测器,根据检测结果生成检测结果信号的信号发生器 信号强度检测器的多路复用器,多路复用RF放大器的输出信号,检测结果信号和DC偏置电压,以及光强度调制器,其具有基于以下方式执行光调制操作的马赫 - 曾德尔型光波导 多路复用器的输出信号被布置在该区域内。 在该区域外部布置有光源单元,接收器单元,DC偏置控制器和显示单元。
    • 3. 发明授权
    • Optical receiver
    • 光接收机
    • US08577225B2
    • 2013-11-05
    • US12935252
    • 2009-03-25
    • Masahito MureNorikazu MiyazakiToshio KataokaKaoru Higuma
    • Masahito MureNorikazu MiyazakiToshio KataokaKaoru Higuma
    • H04B10/06G01B9/02
    • H04B10/677
    • Provided is an optical receiver which accurately demodulates an optical signal obtained by the differential phase shift modulation method. The optical receiver includes: an interferometer which branches the inputted optical signal into two parts and gives a one-bit phase difference to the resultant two optical signals so that the two optical signals after addition of the phase difference are made to interfere each other to output two output lights; reflection means which reflects one of the output lights from the interferometer so as to return to the interferometer; detection means which detects the return light which has been reflected by the reflection means and propagates through the interferometer in the different direction from the inputted optical signal, for output; and phase difference control means which adjusts the phase difference given by the interferometer according to the intensity of the return light detected by the detection means.
    • 提供了一种能够对由差分相移调制方法获得的光信号进行精确解调的光接收机。 光接收机包括:干涉仪,其将输入的光信号分成两部分,并给出所得到的两个光信号的一位相位差,使得相加后的两个光信号相互干扰以输出 两路输出灯; 反射装置,其反射来自干涉仪的输出光之一以返回到干涉仪; 检测装置,其检测已经被反射装置反射的返回光,并且沿与所输入的光信号不同的方向通过干涉仪传播; 以及相位差控制装置,其根据由检测装置检测到的返回光的强度来调整由干涉仪给出的相位差。
    • 5. 发明申请
    • OPTICAL RECEIVER
    • 光接收机
    • US20110075149A1
    • 2011-03-31
    • US12935252
    • 2009-03-25
    • Masahito MureNorikazu MiyazakiToshio KataokaKaoru Higuma
    • Masahito MureNorikazu MiyazakiToshio KataokaKaoru Higuma
    • G01B9/02
    • H04B10/677
    • Provided is an optical receiver which accurately demodulates an optical signal obtained by the differential phase shift modulation method. The optical receiver includes: an interferometer which branches the inputted optical signal into two parts and gives a one-bit phase difference to the resultant two optical signals so that the two optical signals after addition of the phase difference are made to interfere each other to output two output lights; reflection means which reflects one of the output lights from the interferometer so as to return to the interferometer; detection means which detects the return light which has been reflected by the reflection means and propagates through the interferometer in the different direction from the inputted optical signal, for output; and phase difference control means which adjusts the phase difference given by the interferometer according to the intensity of the return light detected by the detection means.
    • 提供了一种能够对由差分相移调制方法获得的光信号进行精确解调的光接收机。 光接收机包括:干涉仪,其将输入的光信号分成两部分,并给出所得到的两个光信号的一位相位差,使得相加后的两个光信号相互干扰以输出 两路输出灯; 反射装置,其反射来自干涉仪的输出光之一以返回到干涉仪; 检测装置,其检测已经被反射装置反射的返回光,并且沿与所输入的光信号不同的方向通过干涉仪传播; 以及相位差控制装置,其根据由检测装置检测到的返回光的强度来调整由干涉仪给出的相位差。
    • 7. 发明申请
    • Electric field measuring device
    • 电场测量装置
    • US20110227559A1
    • 2011-09-22
    • US12998762
    • 2009-11-27
    • Norikazu MiyazakiTakeshi Sakai
    • Norikazu MiyazakiTakeshi Sakai
    • G01R31/00
    • G01R29/0885G01R29/0871G01R33/032
    • The electric field measuring device measures an electric field intensity of an electromagnetic wave generated from equipment under test 8 in an area for detecting an electromagnetic wave. An antenna 1 and an optical intensity modulator having a Mach-Zehnder type optical waveguide are inside the area and an output signal of the antenna is supplied to a modulation electrode of the optical intensity modulator. A light source unit, a light receiving unit, and a DC bias control unit controlling a DC bias voltage supplied to the optical intensity modulator are outside the area. An optical wave is guided to the optical intensity modulator from the light source unit, and is guided to the light receiving unit from the optical intensity modulator via an optical fiber 4. The DC bias voltage is supplied to the optical intensity modulator from the DC bias control unit via a power supply line 4.
    • 电场测量装置测量用于检测电磁波的区域中由被测设备8产生的电磁波的电场强度。 天线1和具有马赫 - 曾德尔型光波导的光强度调制器在该区域内,天线的输出信号被提供给光强度调制器的调制电极。 控制提供给光强度调制器的DC偏置电压的光源单元,光接收单元和DC偏置控制单元在该区域之外。 光波从光源单元被引导到光强度调制器,并通过光纤4从光强度调制器被引导到光接收单元.DC偏压由DC偏压提供给光强度调制器 控制单元经由电源线4。
    • 8. 发明申请
    • Optical modulation element module
    • 光调制元件模块
    • US20060115226A1
    • 2006-06-01
    • US11233573
    • 2005-09-23
    • Norikazu MiyazakiMasataka Yokozawa
    • Norikazu MiyazakiMasataka Yokozawa
    • G02B6/10
    • G02F1/2255G02F2001/212G02F2201/126G02F2202/20
    • The present invention provides an optical modulation element module which is capable of the optical modulation for analog transmission with a low driving voltage and low chirp. An optical modulation element module, in which Mach-Zehnder type optical modulation element 50 having a Mach-Zehnder type waveguide unit having two branched waveguides on a substrate which has electro-optical effect and two modulation electrodes which apply a modulation signal to each branched waveguide, optical input and output units for inputting and outputting a light wave to and from the optical modulation element, and a modulation signal input unit 56 for inputting the modulation signal into the modulation electrodes are placed in a case 51, includes a transformer branching unit 57 in which the modulation signal input unit which corresponds to the two modulation electrodes is formed as one terminal and which divides the modulation signal from the modulation signal input unit into two signals, and applies the divided modulation signals to each modulation electrode.
    • 本发明提供一种能够以低驱动电压和低啁啾进行模拟传输的光调制的光调制元件模块。 一种光调制元件模块,其中具有Mach-Zehnder型光调制元件50的Mach-Zehnder型光波导单元在具有电光效应的基板上具有两个分支波导,以及两个调制电极,其对每个分支波导施加调制信号 ,用于向光调制元件输入光和输出光波的光输入和输出单元,以及用于将调制信号输入调制电极的调制信号输入单元56放置在壳体51中,包括变压器分支单元57 其中对应于两个调制电极的调制信号输入单元形成为一个端子,并将调制信号从调制信号输入单元分成两个信号,并将分频的调制信号施加到每个调制电极。
    • 10. 发明授权
    • Optical modulation element module
    • 光调制元件模块
    • US07570843B2
    • 2009-08-04
    • US11233573
    • 2005-09-23
    • Norikazu MiyazakiMasataka Yokozawa
    • Norikazu MiyazakiMasataka Yokozawa
    • G02F1/035
    • G02F1/2255G02F2001/212G02F2201/126G02F2202/20
    • The present invention provides an optical modulation element module which is capable of the optical modulation for analog transmission with a low driving voltage and low chirp.An optical modulation element module, in which Mach-Zehnder type optical modulation element 50 having a Mach-Zehnder type waveguide unit having two branched waveguides on a substrate which has electro-optical effect and two modulation electrodes which apply a modulation signal to each branched waveguide, optical input and output units for inputting and outputting a light wave to and from the optical modulation element, and a modulation signal input unit 56 for inputting the modulation signal into the modulation electrodes are placed in a case 51, includes a transformer branching unit 57 in which the modulation signal input unit which corresponds to the two modulation electrodes is formed as one terminal and which divides the modulation signal from the modulation signal input unit into two signals, and applies the divided modulation signals to each modulation electrode.
    • 本发明提供一种能够以低驱动电压和低啁啾进行模拟传输的光调制的光调制元件模块。 一种光调制元件模块,其中具有Mach-Zehnder型光调制元件50的Mach-Zehnder型光波导单元在具有电光效应的基板上具有两个分支波导,以及两个调制电极,其对每个分支波导施加调制信号 ,用于向光调制元件输入光和输出光波的光输入和输出单元,以及用于将调制信号输入调制电极的调制信号输入单元56放置在壳体51中,包括变压器分支单元57 其中对应于两个调制电极的调制信号输入单元形成为一个端子,并将调制信号从调制信号输入单元分成两个信号,并将分频的调制信号施加到每个调制电极。