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    Optical modulator
    1.
    发明公开
    Optical modulator 有权
    Optischer调制器

    公开(公告)号：EP2345922A2

    公开(公告)日：2011-07-20

    申请号：EP11154951

    申请日：2006-10-31

    申请人： SUMITOMO OSAKA CEMENT CO LTD

    发明人： SHIMIZU RYO ,  FUJITA TAKAHISA ,  SUGAMATA TORU

    IPC分类号： G02F1/01 ,  G02F1/03 ,  G02F1/035

    CPC分类号： G02F1/0123 ,  G02F1/0305 ,  G02F1/0356

    摘要： An optical modulator according to the invention comprises an optical modulation element (1) including a substrate having electro-optic effect, an optical waveguide formed on the substrate, and a modulation electrode for modulating light passing through the optical waveguide; and a terminal substrate (30) disposed outside the substrate to supply a modulation signal for driving the optical modulation element (1) from the optical modulation element (1) to a terminator (9), wherein the terminal substrate (30) is provided with the terminator (9), and a modulation signal monitoring output line (35) for monitoring the voltage amplitude of the modulation signal inputted to the terminator (9).

    摘要翻译： 根据本发明的光调制器包括：光调制元件（1），包括具有电光效应的基板，形成在基板上的光波导和用于调制通过光波导的光的调制电极; 以及端子基板（30），其设置在所述基板的外侧，以将用于将所述光调制元件（1）驱动的调制信号从所述光调制元件（1）提供给终端器（9），其中，所述端子基板（30） 终端器（9）和用于监视输入到终端器（9）的调制信号的电压振幅的调制信号监视输出线（35）。

    METHOD AND DEVICE FOR MEASURING HALF-WAVE VOLTAGE OF MACH-ZEHNDER TYPE OPTICAL MODULATOR
    2.
    发明公开
    METHOD AND DEVICE FOR MEASURING HALF-WAVE VOLTAGE OF MACH-ZEHNDER TYPE OPTICAL MODULATOR 有权
    方法和装置的光学调制器MACH ZEHNDER-TPYS的测量半波电源

    公开(公告)号：EP1437586A4

    公开(公告)日：2006-05-10

    申请号：EP02755710

    申请日：2002-07-31

    申请人： SUMITOMO OSAKA CEMENT CO LTD

    发明人： MIYAZAKI NORIKAZU ,  SHIMIZU RYO

    IPC分类号： G02F1/035 ,  G02F1/01 ,  G02F1/225 ,  G01M11/00

    CPC分类号： G02F1/0123 ,  G02F1/0121 ,  G02F1/225

    摘要： A method and a device for measuring the half−wave voltage of a Mach−Zehnder type optical modulator accurately and without depending on the bias variation of an optical modulator. The method of measuring the half−wave voltage of the Mach−Zehnder type optical modulator comprising the steps of applying a high−frequency AC signal (34) and a monitoring low−frequency AC signal (35) in a superimposed manner to a Mach−Zehnder type optical modulator (1), or applying the both respectively to separately constituted electrodes, and observing the low−speed response of an output light from the optical modulator (1), wherein the half−wave voltage at a frequency to be measured of the Mach−Zehnder type optical modulator (1) is measured by using the voltage amplitude of the high−frequency AC signal (34) when the intensity change of an output light by the monitoring low−frequency AC signal (35) is almost zero with the voltage amplitude of the high−frequency AC signal (34) kept variable.

    摘要翻译： 高频AC信号（34）被施加到光调制器（1）和低频AC信号（35）以叠加的方式被应用。 半波电压通过高频信号，当由所述低频信号的所述输出光的强度变化几乎是零与所述高频信号的电压振幅保持可变的电压振幅进行测定。 一个独立的claimsoft被包括为半波电压测量装置。

    OPTICAL WAVEGUIDE ELEMENT MODULE
    3.
    发明公开
    OPTICAL WAVEGUIDE ELEMENT MODULE 审中-公开
    光学纤维元件模块

    公开(公告)号：EP2482120A4

    公开(公告)日：2014-09-17

    申请号：EP10818843

    申请日：2010-09-24

    申请人： SUMITOMO OSAKA CEMENT CO LTD

    发明人： SHIMIZU RYO

    IPC分类号： G02F1/01 ,  G02F1/03 ,  G02F1/225

    CPC分类号： G02F1/0121 ,  G02F1/0327 ,  G02F1/2255

    摘要： Provided is an optical waveguide element module wherein the optical response frequency characteristics can be flattened over a wide band exceeding tens of GHz, even when the impedance of a modulation electrode of an optical waveguide element and the impedance of a transmission line for inputting a modulation signal from outside the optical waveguide element are different from each other, and even when a filter circuit including a capacitor is arranged on a line for inputting the modulation signal into the modulation electrode of the optical waveguide element. The optical waveguide element module is equipped with an optical waveguide element having an optical waveguide (2) formed on a substrate (1), a modulation electrode (3) which modulates light waves propagating in the optical waveguide, a connector (8) connecting an external signal line which inputs the modulation signal to the modulation electrode, and a relay line formed on a relay substrate (7) and which connects the connector and the modulation electrode. The optical waveguide element module is characterised by the relay line being a coplanar line that sandwiches the signal terminal with the earth terminal, by being composed so as to suppress the reflection of the modulation signal in the optical waveguide element module by the continuous or stepwise change in the impedance of the relay line, as well as by the placement of the filter circuit including a capacitor in the middle of the relay line.