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    Waveguide-type optical matrix switch
    3.
    发明授权
    Waveguide-type optical matrix switch 失效
    波导型光矩阵开关

    公开(公告)号：US5247594A

    公开(公告)日：1993-09-21

    申请号：US853989

    申请日：1992-03-20

    Applicant: Masayuki Okuno ,  Kuniharu Kato ,  Katsumi Katoh ,  Masao Kawachi

    Inventor： Masayuki Okuno ,  Kuniharu Kato ,  Katsumi Katoh ,  Masao Kawachi

    IPC: G02B6/12 ,  G02B6/125 ,  G02B6/28 ,  G02F1/01 ,  G02F1/313

    CPC classification number: G02F1/3136 ,  G02B6/125 ,  G02B6/2804 ,  G02B6/2821 ,  G02B2006/12145 ,  G02B2006/12159 ,  G02F1/0147 ,  G02F2001/0113

    Abstract: A waveguide-type optical matrix switch including as its switching element a Mach-Zehnder interferometer which includes two directional couplers and an optical phase shifter. The two directional couplers are arranged by placing two optical waveguides in close proximity at two positions on a substrate, and have an identical coupling ratio. The optical phase shifter is disposed over at least one of the two optical waveguides between the directional couplers. The two optical waveguides have an effective optical path length difference of half a wavelength of a light signal between the two directional couplers, and are intersected in the optical switch element. The waveguide-type optical matrix switch is little affected by fabrication errors in the coupling ratio of the directional couplers, and superior in the extinction ratio.

    Abstract translation: 一种波导型光矩阵开关，包括作为其开关元件的包括两个定向耦合器和光学移相器的马赫 - 曾德干涉仪。 两个定向耦合器通过将两个光波导放置在靠近基板上的两个位置并且具有相同的耦合比来布置。 光学移相器设置在定向耦合器之间的两个光波导中的至少一个上。 两个光波导具有在两个定向耦合器之间的光信号的一半波长的有效光程长度差，并且在光开关元件中相交。 波导型光矩阵开关几乎不受定向耦合器耦合比的制造误差的影响，消光比优越。

    Waveguide device and module
    4.
    发明授权
    Waveguide device and module 有权
    波导设备和模块

    公开(公告)号：US08625943B2

    公开(公告)日：2014-01-07

    申请号：US12994280

    申请日：2009-05-26

    Applicant: Shunichi Soma ,  Takashi Goh ,  Yasuaki Hashizume ,  Masahiro Yanagisawa ,  Takanori Ishikawa ,  Mitsuru Nagano ,  Atsushi Murasawa ,  Masayuki Okuno

    Inventor： Shunichi Soma ,  Takashi Goh ,  Yasuaki Hashizume ,  Masahiro Yanagisawa ,  Takanori Ishikawa ,  Mitsuru Nagano ,  Atsushi Murasawa ,  Masayuki Okuno

    IPC: G02B6/26

    CPC classification number: G02B6/12019 ,  G02B2006/12126 ,  G02B2006/12195

    Abstract: Excess optical power in a waveguide device is appropriately terminated. According to one embodiment of the present invention, the waveguide device comprises a termination structure filled with a light blocking material for terminating light from the end section of a waveguide. This termination structure can be formed by forming a groove on an optical waveguide by removing the clad and core, and filling the inside of that groove with a material attenuating the intensity of the light (light blocking material). In this manner, light that enters into the termination structure is attenuated by the light blocking material, and influence on other optical devices as a crosstalk component can be suppressed. With such termination structure, not only the influence on optical devices integrated on the same substrate, but also the influence on other optical devices directly connected to that substrate can be suppressed.

    Abstract translation: 适当地终止波导器件中的光功率过大。 根据本发明的一个实施例，波导器件包括填充有阻光材料的端接结构，用于终止来自波导端部的光。 该端接结构可以通过移除包层和芯在光波导上形成凹槽，并用衰减光强度（遮光材料）的材料填充该凹槽的内部来形成。 以这种方式，进入终端结构的光被遮光材料衰减，并且可以抑制对作为串扰分量的其它光学装置的影响。 通过这种端接结构，不仅可以抑制对同一基板上集成的光学器件的影响，还可以抑制对与该基板直接连接的其他光学器件的影响。

    WAVEGUIDE DEVICE AND MODULE
    5.
    发明申请
    WAVEGUIDE DEVICE AND MODULE 有权
    波导设备和模块

    公开(公告)号：US20110064355A1

    公开(公告)日：2011-03-17

    申请号：US12994280

    申请日：2009-05-26

    Applicant: Shunichi Soma ,  Takashi Goh ,  Yasuaki Hashizume ,  Masahiro Yanagisawa ,  Takanori Ishikawa ,  Mitsuru Nagano ,  Atsushi Murasawa ,  Masayuki Okuno

    Inventor： Shunichi Soma ,  Takashi Goh ,  Yasuaki Hashizume ,  Masahiro Yanagisawa ,  Takanori Ishikawa ,  Mitsuru Nagano ,  Atsushi Murasawa ,  Masayuki Okuno

    IPC: G02B6/26 ,  G02B6/35 ,  G02B6/34 ,  G02B6/28

    CPC classification number: G02B6/12019 ,  G02B2006/12126 ,  G02B2006/12195

    Abstract: Excess optical power in a waveguide device is appropriately terminated. According to one embodiment of the present invention, the waveguide device comprises a termination structure filled with a light blocking material for terminating light from the end section of a waveguide. This termination structure can be formed by forming a groove on an optical waveguide by removing the clad and core, and filling the inside of that groove with a material attenuating the intensity of the light (light blocking material). In this manner, light that enters into the termination structure is attenuated by the light blocking material, and influence on other optical devices as a crosstalk component can be suppressed. With such termination structure, not only the influence on optical devices integrated on the same substrate, but also the influence on other optical devices directly connected to that substrate can be suppressed.

    Abstract translation: 适当地终止波导器件中的光功率过大。 根据本发明的一个实施例，波导器件包括填充有阻光材料的端接结构，用于终止来自波导端部的光。 该端接结构可以通过移除包层和芯在光波导上形成凹槽，并用衰减光强度（遮光材料）的材料填充该凹槽的内部来形成。 以这种方式，进入终端结构的光被遮光材料衰减，并且可以抑制对作为串扰分量的其它光学装置的影响。 通过这种端接结构，不仅可以抑制对同一基板上集成的光学器件的影响，还可以抑制对与该基板直接连接的其他光学器件的影响。

    Interferometer and its fabrication method
    7.
    发明授权
    Interferometer and its fabrication method 有权
    干涉仪及其制作方法

    公开(公告)号：US06823094B2

    公开(公告)日：2004-11-23

    申请号：US10054618

    申请日：2002-01-22

    Applicant: Takashi Goh ,  Makoto Abe ,  Yasuyuki Inoue ,  Masayuki Okuno ,  Takashi Saida

    Inventor： Takashi Goh ,  Makoto Abe ,  Yasuyuki Inoue ,  Masayuki Okuno ,  Takashi Saida

    IPC: G02B612

    CPC classification number: G02F1/2255 ,  G02B6/12007 ,  G02B2006/12166

    Abstract: An interferometer includes a waveguide core, and thin film heaters with widths W1 and W2. The thin film heaters are mounted directly above the waveguide core, and operate as two types of different annealing regions. The annealing, which is carried out by supplying current to the thin film heaters, can alter the quality of the cladding, and change the stress applied on the waveguide core, thereby making it possible to control the polarization dependency. Thus changing the width of the thin film heaters and/or the amount of the supply current thereto enables the permanent control of the effective refractive index (birefringence index) independently in the transverse electric polarization mode and the transverse magnetic polarization mode. This enables the transverse electric polarization mode to be adjusted to a phase difference of &lgr;/2, and the transverse magnetic polarization mode to a phase difference of zero.

    Abstract translation: 干涉仪包括波导芯和具有宽度W1和W2的薄膜加热器。 薄膜加热器直接安装在波导芯上方，并作为两种不同的退火区域运行。 通过向薄膜加热器供给电流进行的退火可以改变包层的质量，并且改变施加在波导芯上的应力，从而可以控制偏振依赖性。 因此，通过改变薄膜加热器的宽度和/或其电流量，能够在横向电极化模式和横向磁极化模式中独立地有效地控制有效折射率（双折射率）。 这使得能够将横向电极化模式调整为λ/ 2的相位差，将横向磁极化模式调整为零相位差。

    Planar optical waveguide
    8.
    发明授权
    Planar optical waveguide 有权
    平面光波导

    公开(公告)号：US08615146B2

    公开(公告)日：2013-12-24

    申请号：US13002860

    申请日：2009-07-29

    Applicant: Mitsuru Nagano ,  Akira Himeno ,  Masayuki Okuno ,  Masahiko Naito ,  Akihito Doi ,  Daisuke Ogawa ,  Akira Nagai

    Inventor： Mitsuru Nagano ,  Akira Himeno ,  Masayuki Okuno ,  Masahiko Naito ,  Akihito Doi ,  Daisuke Ogawa ,  Akira Nagai

    IPC: G02B6/12

    CPC classification number: G02B6/12007 ,  G02B2006/12104

    Abstract: A planar optical waveguide including a clad layer, an optical waveguide having a core embedded in the clad layer; and a groove formed in the clad layer and having a reflection interface for totally reflecting a leaked light leaked from the optical waveguide to the clad layer. Since the reflection interface for totally reflecting the leaked light is formed in the clad layer, the leaked light is prevented from entering into the tap coupler, and the variation of the branching ratio can be reduced.

    Abstract translation: 一种平面光波导，包括包覆层，具有嵌入包层的芯的光波导; 以及形成在包覆层中并具有用于将从光波导泄漏的泄漏光全反射到包覆层的反射界面的凹槽。 由于在包覆层中形成用于全反射泄漏光的反射界面，所以防止了泄漏的光进入分接耦合器，并且可以降低分支比的变化。

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