Element having light waveguides and method of making same
    5.
    发明授权
    Element having light waveguides and method of making same 失效
    具有光波导的元件及其制造方法

    公开(公告)号:US4793675A

    公开(公告)日:1988-12-27

    申请号:US170622

    申请日:1988-03-18

    申请人: Yuichi Handa

    发明人: Yuichi Handa

    CPC分类号: G02B6/1342 G02F1/335

    摘要: A method of making and an element having a light waveguide in which the input-output area through which light is input or output is made into a light waveguide of a high threshold value of optical damage formed by outside diffusion of lithium oxide or by ion exchange and the optically functional portion in which the waveguide light is modulated or deflected by extraneous action is made into a light waveguide formed by diffusion of a metal of high light modulation or light deflection efficiency.

    摘要翻译: 一种制造方法和具有光波导的元件,其中输入或输出光的输入 - 输出区域被制成由氧化锂的外部扩散或通过离子交换形成的光学损伤的高阈值的光波导 并且通过外部作用将波导光调制或偏转的光学功能部分制成通过高光调制或光偏转效率的金属的扩散而形成的光波导。

    Polarization-mode selective semiconductor laser with a bending channel
stripe, apparatus including the same and optical communication system
using the same
    7.
    发明授权
    Polarization-mode selective semiconductor laser with a bending channel stripe, apparatus including the same and optical communication system using the same 失效
    具有弯曲通道条纹的极化模式选择性半导体激光器,包括其的装置和使用该半导体激光器的光通信系统

    公开(公告)号:US6008675A

    公开(公告)日:1999-12-28

    申请号:US901288

    申请日:1997-07-29

    申请人: Yuichi Handa

    发明人: Yuichi Handa

    摘要: A polarization-mode selective semiconductor laser includes a semiconductor laser structure including an active layer for generating gain spectra for the first and second different polarization modes and a diffraction grating formed with a uniform pitch over the laser structure. The laser structure includes a first DFB reflector portion with a first channel stripe and a second DFB reflector portion with a second channel stripe connected to the first stripe channel. The first DFB reflector portion and the second DFB reflector portion is serially arranged in a cavity direction of the laser. The first and second stripe channels are bent relative to each other such that a Bragg wavelength for the first polarization mode is coincident with a gain peak wavelength for the first polarization mode in the first DFB reflector portion, to make the first polarization mode dominant in the first DFB reflector portion, and that a Bragg wavelength for the second polarization mode is coincident with a gain peak wavelength for the second polarization mode in the second DFB reflector portion, to make the second polarization mode dominant in the second DFB reflector portion.

    摘要翻译: 偏振模选择半导体激光器包括半导体激光器结构,其包括用于产生用于第一和第二不同偏振模的增益谱的有源层和在激光器结构上以均匀间距形成的衍射光栅。 激光器结构包括具有第一通道条纹的第一DFB反射器部分和具有连接到第一条带通道的第二通道条带的第二DFB反射器部分。 第一DFB反射器部分和第二DFB反射器部分沿激光器的空腔方向串联布置。 第一和第二条纹信道相对于彼此弯曲,使得第一偏振模式的布拉格波长与第一DFB反射器部分中的第一偏振模式的增益峰值波长一致,以使第一偏振模式在 第一DFB反射器部分,并且第二偏振模式的布拉格波长与第二DFB反射器部分中的第二偏振模式的增益峰值波长一致,以使第二偏振模式在第二DFB反射器部分中占主导地位。

    Demultiplexing apparatus and optical communication system using the
demultiplexing apparatus
    9.
    发明授权
    Demultiplexing apparatus and optical communication system using the demultiplexing apparatus 失效
    使用解复用装置的解复用装置和光通信系统

    公开(公告)号:US5379142A

    公开(公告)日:1995-01-03

    申请号:US170905

    申请日:1993-12-21

    申请人: Yuichi Handa

    发明人: Yuichi Handa

    CPC分类号: G02B6/126 G02B6/29397

    摘要: A polarization-independent wavelength demultiplexing apparatus for demultiplexing a light beam of at least one predetermined wavelength, includes a first demultiplexer for demultiplexing the light beam at a predetermined wavelength to obtain a component of the light beam in a first polarization state and second demultiplexer for demultiplexing the light beam at the predetermined wavelength to obtain a component of the light beam in a second polarization state, different from the first polarization state. The first demultiplexer and the second demultiplexer are arranged in a serial manner or in a parallel manner with respect to light transmitted through the demultiplexing structure.

    摘要翻译: 一种用于对至少一个预定波长的光束进行解复用的偏振无关波长解复用装置,包括用于以预定波长解复用光束以获得第一偏振状态的光束的分量的第一解复用器和用于解复用的第二解复用器 以预定波长的光束获得与第一偏振状态不同的第二偏振状态的光束的分量。 第一解复用器和第二解复用器相对于通过解复用结构传输的光以串行方式或并行布置。

    Optical device with an optical coupler for effecting light branching
and/or combining and an optical amplifier
    10.
    发明授权
    Optical device with an optical coupler for effecting light branching and/or combining and an optical amplifier 失效
    具有用于实现光分支和/或组合的光耦合器的光学装置和光放大器

    公开(公告)号:US5369719A

    公开(公告)日:1994-11-29

    申请号:US899472

    申请日:1992-06-16

    摘要: A first light waveguide is formed, and second and third light waveguides are respectively connected to the first light waveguide at first and second positions. A first coupler for effecting tight branching and/or combining is arranged near the first position, and a second coupler for effecting light branching and/or combining is arranged near the second position. An optical amplifier is arranged on the first light waveguide between the first and second positions for compensating for a light loss of a light wave caused by each of the first and second coupler.

    摘要翻译: 形成第一光波导,第二和第三光波导在第一和第二位置分别连接到第一光波导。 用于实现紧密分支和/或组合的第一耦合器设置在第一位置附近,并且用于实现光分支和/或组合的第二耦合器设置在第二位置附近。 光放大器布置在第一和第二位置之间的第一光波导上,用于补偿由第一和第二耦合器中的每一个引起的光波的光损失。