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31 条记录 (耗时 0.024 秒)

    High-frequency transmission line and an optical module incorporating the same line
    3.
    发明授权
    High-frequency transmission line and an optical module incorporating the same line 有权
    高频传输线和包含相同线路的光模块

    公开(公告)号：US07177549B2

    公开(公告)日：2007-02-13

    申请号：US10222480

    申请日：2002-08-16

    申请人： Naoki Matsushima ,  Kazumi Kawamoto ,  Hideyuki Kuwano ,  Yoshiaki Niwa ,  Tetsuya Kato

    发明人： Naoki Matsushima ,  Kazumi Kawamoto ,  Hideyuki Kuwano ,  Yoshiaki Niwa ,  Tetsuya Kato

    IPC分类号： H04B10/04 ,  H04B10/00 ,  G02F1/03

    CPC分类号： H01P1/02

    摘要： A transmission line with a bending portion is provided, which line comprises any one of a coplanar line, another coplanar waveguide line formed on the dielectric substrate under which a ground layer is provided and a coplanar strip line. A chamfered portion is provided on the outer angular portion of the bending portion of the signal wiring conductor and a triangular conductor is disposed to an inner angular portion thereof. Given that length of the chamfered portion is defined as a, and length of the wiring edge side of the triangular conductor is defined as b and width of the signal wiring conductor is defined as c, it is arranged such that a is greater than b+c×square root of 2. Thereby, a transmission line or an optical module of smaller reflection loss at the bending portion thereof and of improved high-frequency characteristics is provided.

    摘要翻译： 提供具有弯曲部分的传输线，该线包括形成在介质基底上的共面线，形成在其上的接地层和共面带状线之间的另一共面波导线中的任何一个。 在信号布线导体的弯曲部的外角部设置有倒角部，并且在其内角部设置三角形导体。 假设倒角部分的长度被定义为a，并且三角形导体的布线边缘侧的长度被定义为b，并且信号布线导体的宽度被定义为c，其布置成使得a大于b + 因此，提供了在其弯曲部分处具有较小反射损耗并且具有改善的高频特性的传输线或光模块。

    Optical information storing apparatus and method for production of optical deflector
    4.
    发明授权
    Optical information storing apparatus and method for production of optical deflector 失效
    光学信息存储装置及其制造方法

    公开(公告)号：US5191624A

    公开(公告)日：1993-03-02

    申请号：US762935

    申请日：1991-09-19

    申请人： Kenchi Ito ,  Kazumi Kawamoto ,  Naoya Kanda ,  Yasuo Hira ,  Hidemi Sato ,  Atsuko Fukushima ,  Masataka Shiba ,  Akira Inagaki ,  Minoru Yoshida

    发明人： Kenchi Ito ,  Kazumi Kawamoto ,  Naoya Kanda ,  Yasuo Hira ,  Hidemi Sato ,  Atsuko Fukushima ,  Masataka Shiba ,  Akira Inagaki ,  Minoru Yoshida

    IPC分类号： G02B6/12 ,  G02F1/335 ,  G11B7/12

    CPC分类号： G02B6/12004 ,  G02F1/335 ,  G11B7/1245

    摘要： An optical waveguide is comprised of an optical substrate and an optical thin-film optical waveguide layer and formed such that ##EQU1## where .theta. is an output angle, n.sub.o1 is an ordinary refractive index of the optical substrate for an ordinary beam, n.sub.e1 is an extraordinary refractive index of the optical substrate for an extraordinary beam, n.sub.o2 is an ordinary refractive index of the optical thin-film optical waveguide layer for the ordinary beam and n.sub.e2 is an extraordinary refractive index of the optical thin-film optical waveguide layer for the extraordinary beam, and an electrode for generating a surface acoustic wave for diffracting light is formed on the optical waveguide to construct a collinear optical deflector. A method for production of the optical thin-film optical waveguide layer is exemplified wherein a target made of tantalic lilthium niobate or tantalic lithium niobate magnesium and an optical substrate made of lithium tantalate are prepared and an optical thin-film optical waveguide layer having a composition of tantalic lithium niobate or tantalic lithium niobate magnesium is formed on the optical substrate through an ion beam sputtering process into which oxygen can be introduced. Proton substitutes for part of an element constituting the optical thin-film optical waveguide layer.

    摘要翻译： 光波导包括光学基板和光学薄膜光波导层，并且被形成为使得θ是输出角度的θIMA1是普通光束的光学基板的普通折射率，ne1是 用于非常光束的光学基板的非常折射率，no2是普通光束的光学薄膜光波导层的普通折射率，ne2是非常优异的光学薄膜光波导层的非常折射率 并且在光波导上形成用于产生用于衍射光的表面声波的电极，以构成共线的光学偏转器。 制备光学薄膜光波导层的方法被制备，其中制备由钽酸铌酸锂或钽酸铌镁制成的靶和由钽酸锂制成的光学衬底，并且制备具有组成的光学薄膜光波导层 通过可以引入氧气的离子束溅射工艺在光学基板上形成铌酸锂或钽酸铌酸镁。 质子代替构成光学薄膜光波导层的元件的一部分。

    Optical module which permits stable laser output
    6.
    发明授权
    Optical module which permits stable laser output 失效
    允许稳定的激光输出的光学模块

    公开(公告)号：US06912363B2

    公开(公告)日：2005-06-28

    申请号：US09919667

    申请日：2001-07-31

    申请人： Hiroaki Furuichi ,  Kazumi Kawamoto ,  Katsumi Kuroguchi ,  Atsuhiro Yamamoto ,  Keiichi Yamada ,  Tsutomu Okumura ,  Kazuo Takai ,  Shohei Hata

    发明人： Hiroaki Furuichi ,  Kazumi Kawamoto ,  Katsumi Kuroguchi ,  Atsuhiro Yamamoto ,  Keiichi Yamada ,  Tsutomu Okumura ,  Kazuo Takai ,  Shohei Hata

    IPC分类号： H01S5/00 ,  H01S5/022 ,  H01S5/0687 ,  H04B10/04

    CPC分类号： H01S5/0687 ,  H01S5/005 ,  H01S5/02252 ,  H01S5/02284

    摘要： An optical module for use in detecting a plurality of different wavelengths by making use of the multiple wavelength selectivity of an etalon. The optical module includes a semiconductor laser, a lens for converting a beam emitted from the semiconductor laser into a substantially parallel beam, a beam splitter for splitting the converted beam into a reflected beam and a transmitted beam, and a light-receiving element disposed such that one of the split beams is incident thereupon through an etalon, wherein a center of the reflected beam from the etalon occurring as the beam is incident upon the etalon is arranged to return to a region other than a beam-emitting portion of the semiconductor laser.

    摘要翻译： 一种用于通过利用标准具的多重波长选择性来检测多个不同波长的光学模块。 光学模块包括半导体激光器，用于将从半导体激光器发射的光束转换成基本上平行的光束的透镜，用于将转换后的光束分解为反射光束和透射光束的分束器，以及设置在其上的光接收元件 所述分束中的一个通过标准具入射到其中，其中，当所述光束入射在所述标准具上时出现的来自所述标准具的所述反射光束的中心被布置成返回到所述半导体激光器的光束发射部分以外的区域 。

    Optical wave-guide, light-beam spot converter and optical transmission module
    8.
    发明授权
    Optical wave-guide, light-beam spot converter and optical transmission module 有权
    光波导，光束点转换器和光传输模块

    公开(公告)号：US06501891B2

    公开(公告)日：2002-12-31

    申请号：US09911574

    申请日：2001-07-25

    申请人： Kazumi Kawamoto ,  Hiroaki Furuichi

    发明人： Kazumi Kawamoto ,  Hiroaki Furuichi

    IPC分类号： G02B602

    CPC分类号： G02B6/4206 ,  G02B6/122 ,  G02B6/132 ,  G02B2006/12097

    摘要： An optical transmission module includes at least one of a light emitting element and a light receiving element, an optical fiber and an optical wave-guide provided between the light emitting element or the light receiving element and the optical fiber. The optical wave-guide has a z-axis in a direction of light propagation, an x-axis in a vertical direction on a cross-sectional plane perpendicular to the z-axis, and a y-axis in horizontal direction thereon. The optical wave-guide includes a core portion formed so that light is transmitted in the direction of the z axis, around at a center of an origin of the x axis and y axis, and a crud layer which surrounds the core portion and is lower in refractive index than a refractive index of the core portion. The core portion includes a plural number of segments, and at least one of the segments has a recess portion.

    摘要翻译： 光传输模块包括发光元件和光接收元件中的至少一种，设置在发光元件或光接收元件与光纤之间的光纤和光波导。 光波导在光传播方向上具有z轴，在垂直于z轴的横截面上的垂直方向上的x轴和在水平方向上的y轴。 光波导包括芯部，其形成为使得光在z轴的方向上绕x轴和y轴的原点的中心传播，并且包围芯部并且较低的crud层 折射率高于芯部的折射率。 芯部包括多个段，并且至少一个段具有凹部。

    Second harmonic generator and method of fabrication thereof
    9.
    发明授权
    Second harmonic generator and method of fabrication thereof 失效
    二次谐波发生器及其制造方法

    公开(公告)号：US5274727A

    公开(公告)日：1993-12-28

    申请号：US879361

    申请日：1992-05-07

    申请人： Kenchi Ito ,  Kazumi Kawamoto ,  Hiroshi Momiji ,  Yasuo Hira ,  Hidemi Sato ,  Atsuko Fukushima

    发明人： Kenchi Ito ,  Kazumi Kawamoto ,  Hiroshi Momiji ,  Yasuo Hira ,  Hidemi Sato ,  Atsuko Fukushima

    IPC分类号： G02F1/377 ,  G02F1/37

    CPC分类号： G02F1/3775

    摘要： A second harmonic generator having a wide acceptance of bandwidth of temperature and/or a high conversion efficiency and a method of fabrication thereof are disclosed. An equidistant arrangement of pole-inverted grating having a rectangular sectional profile and the direction of spontaneous polarization opposite to that of a substrate within an optical waveguide has been known to produce a high conversion efficiency of the second harmonic generator A second harmonic generator having such a structure, which has so far been impossible to fabricate, is formed utilizing the liquid-phase epitaxial method and the ion-implanting method. Further, the substrate and the optical waveguide are formed of the same type of material. The temperature coefficient of the refractive index in the direction perpendicular to the substrate surface is rendered substantially equal to that of the optical waveguide, thereby improving the acceptance of bandwidth of temperature and making possible practical applications of the second harmonic generator.

    摘要翻译： 公开了具有对温度带宽的广泛接受和/或高转换效率的二次谐波发生器及其制造方法。 已知具有矩形截面轮廓和与光波导内的衬底相反的自发极化方向的等反转光栅的等距布置产生二次谐波发生器A的高转换效率二次谐波发生器具有这样的 使用液相外延法和离子注入法形成迄今为止不可能制造的结构。 此外，基板和光波导由相同类型的材料形成。 使与基板表面垂直的方向的折射率的温度系数基本上等于光波导的温度系数，从而提高了温度带宽的接受性，并且可以实现二次谐波发生器的实际应用。