利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

21 条记录 (耗时 0.016 秒)

    Semiconductor laser
    1.
    发明授权
    Semiconductor laser 失效
    半导体激光器

    公开(公告)号：US4726031A

    公开(公告)日：1988-02-16

    申请号：US784594

    申请日：1985-10-04

    申请人： Kiyohide Wakao ,  Haruhisa Soda

    发明人： Kiyohide Wakao ,  Haruhisa Soda

    IPC分类号： H01S5/00 ,  H01S5/042 ,  H01S5/06 ,  H01S5/10 ,  H01S5/12 ,  H01S3/19

    CPC分类号： H01S5/10 ,  H01S5/12 ,  H01S5/1057 ,  H01S5/106 ,  H01S5/1064 ,  H01S5/1243

    摘要： A semiconductor laser including a stripe-shaped active layer, a clad region, and a diffraction grating. The stripe-shaped active layer has a thickness in a first direction, has a first energy gap, and extends in a second direction orthogonal to the first direction. The clad region surrounds the stripe-shaped active layer, and has a second energy band gap greater than the first energy band gap. The diffraction grating is provided in parallel with and adjacent to, the stripe-shaped active layer. The stripe-shaped active layer has a first portion with a first light propagation constant and with a first dimension in a third direction orthogonal to the first and second directions, and has a second portion with a second light propagation constant and with a second dimension in the third direction. The first dimension and the second dimension are different from each other. The second portion has a length L in the second direction. The stripe-shaped active layer satisfies the condition that a product of .DELTA..beta. and L is an odd multiple of .pi./2, where .DELTA..beta. is a difference between the first and second light propagation constants.

    摘要翻译： 一种包括条形有源层，包层区和衍射光栅的半导体激光器。 条形有源层具有第一方向的厚度，具有第一能隙，并且沿与第一方向正交的第二方向延伸。 包层区域围绕条状有源层，并且具有大于第一能带隙的第二能带隙。 衍射光栅与条形有源层平行并相邻地设置。 条形有源层具有第一部分，具有第一光传播常数，第一尺寸在与第一和第二方向正交的第三方向上，并且具有第二部分，具有第二光传播常数，第二部分具有第二尺寸 第三个方向。 第一维度和第二维度彼此不同。 第二部分在第二方向上具有长度L. 条形有源层满足以下条件：DELTAβ和L的乘积是pi / 2的奇数倍，其中ΔTAβ是第一和第二光传播常数之间的差。

    Optical modulator and method of manufacturing the same
    3.
    发明授权
    Optical modulator and method of manufacturing the same 有权
    光调制器及其制造方法

    公开(公告)号：US06924918B2

    公开(公告)日：2005-08-02

    申请号：US10660746

    申请日：2003-09-12

    申请人： Fumio Otake ,  Haruhisa Soda

    发明人： Fumio Otake ,  Haruhisa Soda

    IPC分类号： G02F1/025 ,  G02B6/12 ,  G02F1/015 ,  G02F1/225 ,  G02F1/03

    CPC分类号： G02F1/2257 ,  G02B2006/12142

    摘要： An optical modulator includes a p- or n-type semiconductor layer that is provided at an upper part of an optical waveguide path, and modulating electrodes that are provided at intervals on the semiconductor layer in an extension area of the optical waveguide path. The semiconductor layer has first regions located immediately under the modulating electrodes, and second regions located between the first regions. The second regions have separators that electrically separate the first regions from one another.

    摘要翻译： 光调制器包括设置在光波导路径的上部的p型或n型半导体层，以及在光波导路径的扩展区域中在半导体层上间隔设置的调制电极。 半导体层具有位于调制电极正下方的第一区域和位于第一区域之间的第二区域。 第二区域具有将第一区域彼此电分离的隔板。

    Directional coupler type optical modulator with traveling-wave electrode
    4.
    发明授权
    Directional coupler type optical modulator with traveling-wave electrode 失效

    公开(公告)号：US06836573B2

    公开(公告)日：2004-12-28

    申请号：US10236341

    申请日：2002-09-05

    申请人： Haruhisa Soda

    发明人： Haruhisa Soda

    IPC分类号： G02F1035

    CPC分类号： G02F1/3133 ,  G02F2201/127

    摘要： A directional coupler type optical modulator with traveling-wave electrodes includes a first directional coupler region, a waveguide wave coupling region, a second directional coupler region, and a set of noncrossing traveling-wave electrodes disposed along the outside of the waveguides. The electrodes of each directional coupler are connected to the traveling-wave electrodes via air-bridges. The waveguide structures are of the P-I-N type having a common N-type conducting layer which provides delta-beta operation of the directional coupler, and both cross and bar states are controlled by a single input signal.

    Optical switch and optical communication system
    6.
    发明授权
    Optical switch and optical communication system 失效
    光开关和光通讯系统

    公开(公告)号：US06973238B2

    公开(公告)日：2005-12-06

    申请号：US10655769

    申请日：2003-09-05

    申请人： Haruhisa Soda ,  Shigeru Nakagawa

    发明人： Haruhisa Soda ,  Shigeru Nakagawa

    IPC分类号： G02F1/313 ,  G02B6/42 ,  G02B6/26

    CPC分类号： G02F1/3133 ,  G02F2201/127

    摘要： A directional coupler type optical modulator with traveling-wave electrodes includes a first directional coupler region, a waveguide wave coupling region, a second directional coupler region, and a set of noncrossing traveling-wave electrodes disposed along the outside of the waveguides. The electrodes of each directional coupler are connected to the traveling-wave electrodes via air-bridges. The waveguide structures are of the P-I-N type having a common N-type conducting layer which provides delta-beta operation of the directional coupler, and both cross and bar states are controlled by a single input signal.

    摘要翻译： 具有行波电极的定向耦合器型光调制器包括第一定向耦合器区域，波导管耦合区域，第二定向耦合器区域和沿着波导的外侧布置的一组非交叉行波电极。 每个定向耦合器的电极通过气桥连接到行波电极。 波导结构是具有公共N型导电层的P-I-N型，其提供定向耦合器的delta-β操作，并且交叉和条状态都由单个输入信号控制。

    Variable wavelength light source
    9.
    发明授权
    Variable wavelength light source 失效
    可变波长光源

    公开(公告)号：US07711019B2

    公开(公告)日：2010-05-04

    申请号：US12028311

    申请日：2008-02-08

    申请人： Haruhisa Soda

    发明人： Haruhisa Soda

    IPC分类号： H01S3/13

    CPC分类号： H01S5/141 ,  H01S3/105 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/0617 ,  H01S5/0687 ,  H01S5/142

    摘要： A gain element and a variable wavelength reflector form a resonator. A wavelength selective element selects a resonance wavelength in the resonator. A beam splitter is provided for monitoring an incident light from the gain element and a reflected light from the variable wavelength reflector. A phase adjustment element is arranged in the resonator. A wavelength-lock control unit locks the resonance wavelength to a desired resonance wavelength by adjusting the phase of the resonance wavelength based on the monitored incident light and by adjusting the variable wavelength reflector based on a ratio between the incident light and the reflected light.

    摘要翻译： 增益元件和可变波长反射器形成谐振器。 波长选择元件选择谐振器中的谐振波长。 提供一种分束器，用于监测来自增益元件的入射光和来自可变波长反射器的反射光。 谐振器中布置有相位调整元件。 波长锁定控制单元通过基于所监视的入射光调节谐振波长的相位并且基于入射光和反射光之间的比率来调节可变波长反射器，将谐振波长锁定到期望的谐振波长。

    VARIABLE WAVELENGTH LIGHT SOURCE
    10.
    发明申请
    VARIABLE WAVELENGTH LIGHT SOURCE 失效
    可变波长光源

    公开(公告)号：US20080212622A1

    公开(公告)日：2008-09-04

    申请号：US12028311

    申请日：2008-02-08

    申请人： Haruhisa Soda

    发明人： Haruhisa Soda

    IPC分类号： H01S3/098

    CPC分类号： H01S5/141 ,  H01S3/105 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/0617 ,  H01S5/0687 ,  H01S5/142

    摘要： A gain element and a variable wavelength reflector form a resonator. A wavelength selective element selects a resonance wavelength in the resonator. A beam splitter is provided for monitoring an incident light from the gain element and a reflected light from the variable wavelength reflector. A phase adjustment element is arranged in the resonator. A wavelength-lock control unit locks the resonance wavelength to a desired resonance wavelength by adjusting the phase of the resonance wavelength based on the monitored incident light and by adjusting the variable wavelength reflector based on a ratio between the incident light and the reflected light.

    摘要翻译： 增益元件和可变波长反射器形成谐振器。 波长选择元件选择谐振器中的谐振波长。 提供一种分束器，用于监测来自增益元件的入射光和来自可变波长反射器的反射光。 谐振器中布置有相位调整元件。 波长锁定控制单元通过基于所监视的入射光调节谐振波长的相位并且基于入射光和反射光之间的比率来调节可变波长反射器，将谐振波长锁定到期望的谐振波长。