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    • 2. 发明授权
    • Optical modulator for producing a controllable chirp
    • 用于产生可控啁啾的光学调制器
    • US5408544A
    • 1995-04-18
    • US268175
    • 1994-06-29
    • Minoru Seino
    • Minoru Seino
    • G02F1/017G02F1/035G02F1/225G02B6/10
    • G02F1/2255G02F2203/25
    • An optical modulator comprises an optical waveguide provided on an electro-optic substrate and formed of a first region for optical phase modulation and a second region for optical amplitude modulation cascaded with each other on the substrate, a signal electrode covering the optical waveguide for the first and second regions, and a ground electrode covering a surface of the substrate for the first and second regions, wherein the signal electrode includes an electrode strip extending on the surface of the substrate to continuously cover the optical waveguide from the first region to the second region, and wherein the ground electrode includes an electrode strip extending from the first region to the second region and covering the optical waveguide only in the first region.
    • 一种光学调制器,包括设置在电光基板上并由用于光学相位调制的第一区域和在基板上彼此级联的用于光学幅度调制的第二区域形成的光波导,覆盖光波导的信号电极用于第一 和第二区域,以及覆盖用于第一和第二区域的基板的表面的接地电极,其中信号电极包括在基板的表面上延伸的电极条,以从第一区域连续覆盖光波导至第二区域 ,并且其中所述接地电极包括从所述第一区域延伸到所述第二区域并仅在所述第一区域中覆盖所述光波导的电极条。
    • 9. 发明授权
    • Optical device having an optical waveguide structure
    • 具有光波导结构的光学装置
    • US06104847A
    • 2000-08-15
    • US17692
    • 1998-02-03
    • Minoru Seino
    • Minoru Seino
    • G02B6/122G02B5/28G02B6/12G02B6/34
    • G02B6/12011G02B6/12019G02B6/12028
    • A compact optical device operating as a WDM (wavelength division multiplexing) filter is provided. The optical device includes a slab optical waveguide having first and second end faces opposed to each other, a plurality of first optical waveguides connected to the first end face of the slab optical waveguide, and a plurality of second optical waveguides connected to the second end face of the slab optical waveguide. Each of the second optical waveguides includes a first cavity connected to the slab optical waveguide and a second cavity acutely connected through a first reflecting surface to the first cavity. The second cavity is terminated by a second reflecting surface. Each second cavity is so configured as to be folded back to the corresponding first cavity, so that the optical device can be made compact in setting a required optical path difference between the second optical waveguides. This optical device can be used as an optical multiplexer or an optical demultiplexer in a system adopting WDM.
    • 提供了作为WDM(波分复用)​​滤波器工作的小型光学器件。 光学装置包括具有彼此相对的第一和第二端面的平板光波导,连接到平板光波导的第一端面的多个第一光波导和连接到第二端面的多个第二光波导 的平板光波导。 每个第二光波导包括连接到平板光波导的第一腔和通过第一反射表面与第一腔紧密连接的第二腔。 第二腔被第二反射面终止。 每个第二腔被构造成折回到相应的第一腔,使得可以使光学装置紧凑地设置第二光波导之间所需的光程差。 该光学装置可以用作采用WDM的系统中的光复用器或光解复用器。