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    Active diffraction grating
    2.
    发明申请
    Active diffraction grating 失效
    主动衍射光栅

    公开(公告)号：US20040213499A1

    公开(公告)日：2004-10-28

    申请号：US10826343

    申请日：2004-04-19

    Applicant: YOKOGAWA ELECTRIC CORPORATION

    Inventor： Shun-ichi Miyazaki ,  Akira Miura ,  Shinji Kobayashi ,  Morio Wada ,  Tsuyoshi Yakihara ,  Sadaharu Oka ,  Shinji Iio ,  Tadashige Fujita ,  Chie Sato

    IPC: G02F001/295

    CPC classification number: G02F1/313 ,  G02F1/292 ,  G02F2201/307

    Abstract: An active diffraction grating that has a high degree of freedom in control, small size and high reliability is realized. The active diffraction grating comprises an optical waveguide formed on a two-dimensional plane and electrodes formed on both sides of the optical waveguide, wherein one of the electrodes is formed as plural spot electrodes at a constant spacing in a matrix form on the two-dimensional plane, and with respect to the size of the spot electrodes and the distance between the spot electrodes, the spot electrodes are small and dense enough to function as a line when the spot electrodes are arrayed in a straight line within the diameter of light incident on the optical waveguide, and wherein plural spot electrodes of the spot electrodes arranged in the matrix form are selected and a voltage is applied thereto so as to form at least two parallel lines having a predetermined angle to the traveling direction of the light incident on the optical waveguide, and when the light incident on the two-dimensional plane waveguide is reflected by said at least two parallel lines, the refractive index of the optical waveguide is partly changed so that the wavelength of the light, the angle of the two lines to the incident light and the distance between the lines satisfy a Bragg reflection condition.

    Abstract translation: 实现了具有高自由度控制，小尺寸和高可靠性的主动衍射光栅。 主动衍射光栅包括形成在二维平面上的光波导和形成在光波导两侧的电极，其中一个电极以矩阵形式以恒定的间隔形成为二维的 平面，并且相对于点电极的尺寸和点电极之间的距离，点电极小而致密，足以在点电极以直线排列在入射到光的直径内的直线上发挥作用 光波导，并且其中以矩阵形式布置的点电极的多个点电极被选择并且向其施加电压，以便形成至少两条与入射在光学器件上的光的行进方向具有预定角度的平行线 并且当入射到二维平面波导上的光被所述至少两条平行线反射时，折射率为t 光波导部分地变化，使得光的波长，两条线对入射光的角度和线之间的距离满足布拉格反射条件。

    Optical path control device
    3.
    发明申请
    Optical path control device 审中-公开
    光路控制装置

    公开(公告)号：US20040208412A1

    公开(公告)日：2004-10-21

    申请号：US10813123

    申请日：2004-03-31

    Applicant: YOKOGAWA ELECTRIC CORPORATION

    Inventor： Shun-ichi Miyazaki ,  Akira Miura ,  Shinji Kobayashi ,  Morio Wada ,  Tsuyoshi Yakihara ,  Sadaharu Oka ,  Shinji Iio ,  Chie Sato

    IPC: G02F001/295 ,  G02B006/26

    CPC classification number: G02F1/31 ,  G02B6/3548 ,  G02F1/295 ,  G02F2001/311 ,  G02F2201/066 ,  G02F2202/101

    Abstract: According to this invention, electrodes are formed on both sides of a part of an optical waveguide formed on a substrate and a voltage is applied between the electrodes to change the refractive index at the part of the optical waveguide where the electrode is formed. Therefore, the traveling direction of light can be changed. Moreover, an optical waveguide formed on a substrate, plural electrodes formed on both sides of the optical waveguide, plural incidence units formed at one end of the substrate, and plural emission units formed at the other end are provided. A voltage applied to an arbitrary electrode of the plural electrodes is controlled to change the refractive index at the part of the optical waveguide where the voltage is applied. Light emitted from an arbitrary incidence unit and incident on a core of the substrate thus becomes incident on an arbitrary emission unit. As the position of incidence of incident light or the diameter of the incident light is controlled to emit light to an arbitrary emission unit, an optical switch is realized that has a high degree of freedom in control, is small-sized, has no moving part and has high reliability. Moreover, as a voltage application unit is provided with an algorithm-based optimization processing function in order to improve the responsiveness and the degree of freedom of the optical switch, a highly flexible optical switch that can cope with, for example, changes in communication quantity and communication failure, is realized.

    Abstract translation: 根据本发明，在形成在基板上的光波导的一部分的两侧形成电极，并且在电极之间施加电压以改变形成电极的光波导部分的折射率。 因此，可以改变光的行进方向。 此外，形成在基板上的光波导，形成在光波导的两侧的多个电极，形成在基板一端的多个入射单元和形成在另一端的多个发光单元。 控制施加到多个电极中的任意电极的电压，以改变在施加电压的光波导的部分处的折射率。 从任意入射单元发射的入射在基板的芯上的光就入射到任意的发射单元上。 当入射光的入射位置或入射光的直径被控制为发射光到任意的发射单元时，实现了具有高自由度控制的光学开关，小型化，没有移动部分 并具有很高的可靠性。 此外，为了提高光开关的响应性和自由度，为了提供基于算法的优化处理功能，电压施加单元具有高灵活性的光开关，能够应付例如通信量的变化 和通信故障，实现。

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