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    Optical device and optical transmitter
    3.
    发明授权
    Optical device and optical transmitter 有权
    光学设备和光发射机

    公开(公告)号：US08774583B2

    公开(公告)日：2014-07-08

    申请号：US12685374

    申请日：2010-01-11

    申请人： Takashi Shiraishi ,  Tetsu Hasegawa ,  Masaharu Doi

    发明人： Takashi Shiraishi ,  Tetsu Hasegawa ,  Masaharu Doi

    IPC分类号： G02B6/10

    CPC分类号： G02B6/125 ,  G02B2006/12097 ,  G02B2006/12119

    摘要： An optical device and an optical transmitter are provided. The optical device includes a substrate, a first optical waveguide that may be formed in the substrate and may have a bending portion, and a second optical waveguide that intersects with the bending portion of the first optical waveguide, wherein a groove may be formed outside the bending portion of the first optical waveguide in the substrate.

    摘要翻译： 提供光学装置和光发射机。 光学装置包括基板，可以形成在基板中并且可以具有弯曲部分的第一光波导和与第一光波导的弯曲部相交的第二光波导，其中，可以在 第一光波导的弯曲部分。

    Optical device
    4.
    发明授权
    Optical device 有权
    光学装置

    公开(公告)号：US07627200B2

    公开(公告)日：2009-12-01

    申请号：US11554924

    申请日：2006-10-31

    申请人： Takashi Shiraishi ,  Tetsu Hasegawa ,  Masaharu Doi ,  Kazuhiro Tanaka

    发明人： Takashi Shiraishi ,  Tetsu Hasegawa ,  Masaharu Doi ,  Kazuhiro Tanaka

    IPC分类号： G02F1/035

    CPC分类号： G02F1/0356

    摘要： Optical waveguides (A) and (B) of a Mach-Zehnder modulator is normally formed on a −Z plane as an electric polarization non-inversion area. However, when the signal electrode 11 and the ground electrode 10 are provided asymmetrically on two waveguides, chirp occurs in output light, which is undesired. Therefore, these electrodes are provided symmetrically about the two waveguides. To effectively perform optical modulation, a part of the substrate in which an optical waveguide exists is to be electric polarization-inverted. As a result of the electric polarization inversion the optical waveguide is on the +Z plane. However, electric charge is accumulated on the +Z plane from unstable spontaneous electric polarization of an electric polarization inversion area, and has undesired influence on the performance of the optical modulator. Therefore, a conductive amorphous layer is formed on the surface of the electric polarization inversion area.

    摘要翻译： 马赫 - 曾德调制器的光波导（A）和（B）通常在-Z平面上形成为电极化反转区域。 然而，当信号电极11和接地电极10不对称地设置在两个波导上时，在输出光中发生啁啾，这是不期望的。 因此，这些电极围绕两个波导对称设置。 为了有效地进行光调制，存在光波导的基板的一部分被电极化反转。 作为电极化反转的结果，光波导在+ Z平面上。 然而，电荷从电极化反转区域的不稳定的自发电极化在+ Z平面上积累，并且对光调制器的性能具有不期望的影响。 因此，在电极化反转区域的表面上形成导电非晶层。

    OPTICAL DEVICE
    5.
    发明申请
    OPTICAL DEVICE 有权
    光学装置

    公开(公告)号：US20070280580A1

    公开(公告)日：2007-12-06

    申请号：US11554924

    申请日：2006-10-31

    申请人： Takashi SHIRAISHI ,  Tetsu Hasegawa ,  Masaharu Doi ,  Kazuhiro Tanaka

    发明人： Takashi SHIRAISHI ,  Tetsu Hasegawa ,  Masaharu Doi ,  Kazuhiro Tanaka

    IPC分类号： G02F1/295

    CPC分类号： G02F1/0356

    摘要： Optical waveguides (A) and (B) of a Mach-Zehnder modulator is normally formed on a −Z plane as an electric polarization non-inversion area. However, when the signal electrode 11 and the ground electrode 10 are provided asymmetrically on two waveguides, chirp occurs in output light, which is undesired. Therefore, these electrodes are provided symmetrically about the two waveguides. To effectively perform optical modulation, a part of the substrate in which an optical waveguide exists is to be electric polarization-inverted. As a result of the electric polarization inversion the optical waveguide is on the +Z plane. However, electric charge is accumulated on the +Z plane from unstable spontaneous electric polarization of an electric polarization inversion area, and has undesired influence on the performance of the optical modulator. Therefore, a conductive amorphous layer is formed on the surface of the electric polarization inversion area.

    摘要翻译： 马赫曾德尔调制器的光波导（A）和（B）通常在-Z平面上形成为电极化反转区域。 然而，当信号电极11和接地电极10不对称地设置在两个波导上时，在输出光中发生啁啾，这是不期望的。 因此，这些电极围绕两个波导对称设置。 为了有效地进行光调制，存在光波导的基板的一部分被电极化反转。 作为电极化反转的结果，光波导在+ Z平面上。 然而，电荷从电极化反转区域的不稳定的自发电极化在+ Z平面上积累，并且对光调制器的性能具有不期望的影响。 因此，在电极化反转区域的表面上形成导电非晶层。

    OPTICAL WAVEGUIDE DEVICE AND OPTICAL APPARATUS USING OPTICAL WAVEGUIDE DEVICE
    6.
    发明申请
    OPTICAL WAVEGUIDE DEVICE AND OPTICAL APPARATUS USING OPTICAL WAVEGUIDE DEVICE 审中-公开
    光学波导装置和光学装置使用光波导装置

    公开(公告)号：US20090162014A1

    公开(公告)日：2009-06-25

    申请号：US12335788

    申请日：2008-12-16

    申请人： Takashi SHIRAISHI ,  Masaharu Doi

    发明人： Takashi SHIRAISHI ,  Masaharu Doi

    IPC分类号： G02B6/42

    CPC分类号： G02B6/29352 ,  G02F1/225 ,  G02F2001/217 ,  G02F2201/16 ,  G02F2201/58

    摘要： According to an aspect of an embodiment, an optical waveguide; and a branching section which branches a part of a light propagating through the optical waveguide, wherein the branching section has a first coupler which branches the light propagating through the optical waveguide according to a given unequal branching ratio so as to output first and second branched lights, and uses the first branched light as a first output light; and a second coupler which inputs the second branched light output from the first coupler and branches the second branched light into two lights according to a branching ratio which is substantially equal to the branching ratio in the first coupler so as to output third and fourth branched lights, and uses the fourth branched light as a second output light.

    摘要翻译： 根据实施例的一个方面，一种光波导; 以及分支部，其分支通过所述光波导传播的光的一部分，其中所述分支部具有第一耦合器，所述第一耦合器根据给定的不等分支比将通过所述光波导传播的光分支，以便输出第一和第二分支光 并且使用第一分支光作为第一输出光; 以及第二耦合器，其输入从所述第一耦合器输出的所述第二分支光并且将所述第二分支光分支为根据与所述第一耦合器中的分支比基本相等的分支比将其分成两个光，以输出第三和第四分支光 并且使用第四分支光作为第二输出光。

    OPTICAL DEVICE AND OPTICAL TRANSMITTER
    7.
    发明申请
    OPTICAL DEVICE AND OPTICAL TRANSMITTER 有权
    光学器件和光学发射器

    公开(公告)号：US20100178064A1

    公开(公告)日：2010-07-15

    申请号：US12685374

    申请日：2010-01-11

    申请人： Takashi SHIRAISHI ,  Tetsu Hasegawa ,  Masaharu Doi

    发明人： Takashi SHIRAISHI ,  Tetsu Hasegawa ,  Masaharu Doi

    IPC分类号： H04B10/04 ,  G02B6/10

    CPC分类号： G02B6/125 ,  G02B2006/12097 ,  G02B2006/12119

    摘要： An optical device and an optical transmitter are provided. The optical device includes a substrate, a first optical waveguide that may be formed in the substrate and may have a bending portion, and a second optical waveguide that intersects with the bending portion of the first optical waveguide, wherein a groove may be formed outside the bending portion of the first optical waveguide in the substrate.

    摘要翻译： 提供光学装置和光发射机。 光学装置包括基板，可以形成在基板中并且可以具有弯曲部分的第一光波导和与第一光波导的弯曲部相交的第二光波导，其中，可以在 第一光波导的弯曲部分。

    Polarization conversion device and polarization multiplexing modulator
    8.
    发明授权
    Polarization conversion device and polarization multiplexing modulator 有权
    极化转换器件和偏振复用调制器

    公开(公告)号：US08280200B2

    公开(公告)日：2012-10-02

    申请号：US12585958

    申请日：2009-09-29

    申请人： Masaharu Doi ,  Kazuhiro Tanaka

    发明人： Masaharu Doi ,  Kazuhiro Tanaka

    IPC分类号： G02F1/035 ,  G02B6/00

    CPC分类号： G02B6/2726 ,  G02B6/2773 ,  G02F1/0353 ,  G02F2001/0139

    摘要： A polarization conversion device converts a polarization state of a light which is input to a first waveguide, that is, TE/TM mode of the light, to output it from the first waveguide. The polarization conversion device includes: a mode converter that performs the inter-conversion of TE/TM modes of the light which is input to the first waveguide; and a polarization separator that receives the light passed through the mode converter and separates the received light into a first light, TE/TM of which mode has been converted by the mode converter and a second light, TE/TM of which mode has not been converted, to output the first light to the first waveguide.

    摘要翻译： 偏振转换装置将输入到第一波导的光的偏振状态（即，光的TE / TM模式）转换为从第一波导输出。 偏振转换装置包括：模式转换器，其执行输入到第一波导的光的TE / TM模式的互相转换; 以及偏振分离器，其接收通过模式转换器的光并将接收的光分离成第一光，其中模式已经由模式转换器转换的TE / TM和未模式的第二光TE / TM 转换，以将第一光输出到第一波导。

    Optical waveguide device
    9.
    发明授权
    Optical waveguide device 有权
    光波导器件

    公开(公告)号：US07787717B2

    公开(公告)日：2010-08-31

    申请号：US12149748

    申请日：2008-05-07

    申请人： Yasuhiro Ohmori ,  Shinji Maruyama ,  Tetsuo Ishizaka ,  Masaharu Doi

    发明人： Yasuhiro Ohmori ,  Shinji Maruyama ,  Tetsuo Ishizaka ,  Masaharu Doi

    IPC分类号： G02B6/12

    CPC分类号： G02B6/125 ,  G02B6/42 ,  G02B6/4214 ,  G02B2006/12104 ,  G02B2006/12154 ,  G02B2006/12159 ,  G02F1/0123 ,  G02F1/035 ,  G02F1/225 ,  G02F2201/34

    摘要： The present invention has an object to provide an optical device capable of leading out a light propagated through an optical waveguide to a desired substrate side face while maintaining the sufficient power of the light, within a range of limited substrate size. To this end, according to the optical device of the present invention, a groove is formed in the vicinity of an end portion on the optical output side of the optical waveguide, on the substrate on which the optical waveguide is formed, a side wall of the groove is used as a reflecting plane, the light output from the optical waveguide is reflected by the reflecting plane, and the reflected light is emitted from the desired substrate side face.

    摘要翻译： 本发明的目的是提供一种光学装置，其能够在有限的基板尺寸的范围内将保持足够的光功率的光通过光波导传播到期望的基板侧面。 为此，根据本发明的光学装置，在形成有光波导的基板上的光波导的光输出侧的端部附近形成有槽， 使用凹槽作为反射面，从光波导输出的光被反射面反射，反射光从期望的基板侧面发射。