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    • 32. 发明申请
    • Optical waveguide and optical multiplexer-demultiplexer
    • 光波导和光复用器 - 解复用器
    • US20050041918A1
    • 2005-02-24
    • US10949657
    • 2004-09-27
    • Tomoaki ShibataHiroshi MasudaYasushi SugimotoTetsuya Hoshino
    • Tomoaki ShibataHiroshi MasudaYasushi SugimotoTetsuya Hoshino
    • G02B6/12G02B6/124G02B6/34G02B6/28
    • G02B6/12009G02B6/12007G02B6/124G02B6/2938
    • The present invention provides an optical waveguide which comprises a core 4 for incident light and a core 5 for outgoing light, wherein the width of the core 5 for outgoing light is more than 1.5 times that of the core 4 for incident light. This optical waveguide permits the multiplexing and/or demultiplexing of light rays even when the wavelengths thereof undergo changes within the range of about 10 nm. In addition, the present invention further provides an optical multiplexer-demultiplexer which comprises the combination of an optical waveguide serving as an optical path and a diffraction grating for demultiplexing and focusing light, wherein the absolute value of the difference between the refractive index (nTE) of the core layer of the optical waveguide in the direction parallel to the plane of the film and that (nTM) of the core layer thereof in the direction perpendicular to the plane of the film is not more than 0.007 at the wavelength used. This optical multiplexer-demultiplexer permits the control of the wavelength fluctuation observed for the outputted signal light dependent on the polarization direction of the incident signal light to not more than 5 nm by the reduction of the birefringence index of the core layer of the optical waveguide to a level of not more than 0.007.
    • 本发明提供一种光波导,其包括用于入射光的核心4和用于出射光的核心5,其中用于出射光的核心5的宽度大于入射光的核心4的宽度的1.5倍。 该光波导即使当其波长在约10nm的范围内变化时也允许光线的复用和/或解复用。 另外,本发明还提供了一种光复用器 - 解复用器,其包括用作光路的光波导和用于解复用和聚焦光的衍射光栅的组合,其中折射率(nTE) 在平行于膜平面的方向上的光波导的芯层的垂直于膜平面的方向上的芯层的(nTM)在所使用的波长处不大于0.007。 该光复用器 - 解复用器允许通过将光波导的芯层的双折射率降低到对应于入射信号光的偏振方向的输出信号光观察到的波长波动为不大于5nm 一级不超过0.007。
    • 36. 发明申请
    • Furnace sidewall structure of rotary hearth furnace
    • 转底炉的炉壁结构
    • US20050252340A1
    • 2005-11-17
    • US10516177
    • 2003-05-29
    • Tomoaki ShibataShinji-shi Shima
    • Tomoaki ShibataShinji-shi Shima
    • C22B1/16C21B13/10F27B1/12F27B9/16F27B9/32F27D1/00C21B13/08
    • F27D1/00C21B13/105F27B9/16F27B9/32
    • A furnace sidewall structure of a rotary hearth furnace for making direct reduced iron which is agglomerated iron ore or waste iron oxide containing a reducing agent on a rotary hearth by heating or for heating at least one steel piece, wherein the rotary hearth furnace a includes an outer furnace sidewall and an inner furnace sidewall, wherein at least one of the outer furnace sidewall and the inner furnace sidewall is polygonal. The furnace sidewall structure can be prepared with lower manufacturing costs relative to conventional circular profile rotary hearth furnace with respect to the furnace sidewall. The production thereof is easy with respect to manufacturing and with respect to the fact that the dimensional accuracy of the manufactured furnace sidewall can be easily adjusted Also, there is associated a shorter installation/construction work period and a reduction in the installation/construction cost.
    • 一种用于通过加热或用于加热至少一个钢片来制造直接还原铁的转炉式炉壁炉结构,其是通过加热或用于加热至少一个钢件的含铁还原剂或含有还原剂的废铁氧化物,其中所述转底炉包括 外炉侧壁和内炉侧壁,其中外炉侧壁和内炉侧壁中的至少一个是多边形。 相对于炉壁侧壁的常规圆形旋转炉床炉,可以以较低的制造成本来制备炉侧壁结构。 其制造方面在制造方面容易,并且可以容易地调节制造的炉侧壁的尺寸精度。另外,安装/施工工作时间更短,安装/施工成本降低。