公开(公告)号：US06301412B1

公开(公告)日：2001-10-09

申请号：US09106019

申请日：1998-06-29

申请人： Tsuneo Mori ,  Masaaki Shirota ,  Seiki Ejima ,  Jun Abe ,  Sayuri Maeda ,  Kazuo Koya

发明人： Tsuneo Mori ,  Masaaki Shirota ,  Seiki Ejima ,  Jun Abe ,  Sayuri Maeda ,  Kazuo Koya

IPC分类号： G02B626

CPC分类号： G02B6/2856

摘要： A mask having a center hole for passing through a center fiber, which is one of multiple fibers, and multiple surrounding holes for passing through surrounding fibers, which are the remainder of the multiple fibers, and a stress adjusting unit for holding stresses generated in the center fiber and surrounding fibers to a desired constant value, respectively, are installed. The surrounding fibers are rotated around the center fiber by rotating the mask. The center fiber and the surrounding fibers that have been twisted around the center fiber are heated with a heating apparatus and drawn. The center fiber and the surrounding fibers are fixed using a clamp installed between the stress adjusting unit and the heating apparatus.

摘要翻译： 具有用于穿过作为多根纤维之一的中心纤维的中心孔的掩模和用于穿过作为多纤维的其余部分的周围纤维的多个环绕孔以及用于保持在所述多个纤维中产生的应力的应力调节单元 中心纤维和周围纤维分别安装到所需的恒定值。 通过旋转掩模使周围的纤维围绕中心纤维旋转。 围绕中心纤维扭转的中心纤维和周围的纤维用加热装置加热并拉伸。 中心纤维和周围的纤维使用安装在应力调节单元和加热装置之间的夹具来固定。

公开(公告)号：US5671309A

公开(公告)日：1997-09-23

申请号：US495932

申请日：1995-06-28

申请人： Jun Abe ,  Masaaki Shirota ,  Kazuo Koya

发明人： Jun Abe ,  Masaaki Shirota ,  Kazuo Koya

IPC分类号： G02B6/28 ,  G02B6/26 ,  G02B6/42

CPC分类号： G02B6/2835 ,  G02B6/03633 ,  G02B6/29377

摘要： The object of the present invention is to provide a wide-band optical fiber coupler whose light-branching ratio is independent of the wavelength of light rays to be transmitted therethrough as well as a method for preparing the wide-band optical fiber coupler. When an optical fiber 1 having zero-dispersion at 1.55 .mu.m band and an optical fiber 2 having zero-dispersion at 1.3 .mu.m band are fused and drawn to form a coupled portion 3, a light beam 15 is incident upon the optical fiber 2 and the intensity of the light beam outgoing through either of these optical fibers 2 or 1 is measured to detect the light-branching ratio observed at the coupled portion 3. The drawing operation is interrupted at an instance when the detected light-branching ratio falls within the range of 50.+-.5%.

摘要翻译： 本发明的目的是提供一种宽带光纤耦合器，其光分支比率与要透射的光线的波长无关，以及宽带光纤耦合器的制备方法。 当在1.55μm带上具有零色散的光纤1和在1.3μm带上具有零色散的光纤2被熔化和拉制以形成耦合部分3时，光束15入射到光纤2上 并且测量通过这些光纤2或1中的任一个射出的光束的强度，以检测在耦合部分3处观察到的光分支比。在检测到的光分支比落入内部的情况下，绘制操作被中断 范围为50 +/- 5％。

公开(公告)号：US06436728B2

公开(公告)日：2002-08-20

申请号：US09836272

申请日：2001-04-18

申请人： Shinji Makikawa ,  Hiroshi Aoi ,  Masaaki Shirota ,  Seiki Ejima

发明人： Shinji Makikawa ,  Hiroshi Aoi ,  Masaaki Shirota ,  Seiki Ejima

IPC分类号： H01L2100

CPC分类号： C30B29/06 ,  C30B33/005

摘要： A method of making a high quality optical waveguide substrate is provided, in which the surface of a silicon substrate is oxidized through relatively large thickness and no foreign matter particles are adhered on the surface thereof. The silicon substrate to form a quartz film for the optical waveguide is mounted on a carbon contained ceramics sample base and is inserted into a carbon contained ceramics furnace core tube of which its external circumference is arranged in a heating furnace. When the inside of the furnace core tube is heated to 200 to 600° C. by the heating furnace, an oxidant gas for the silicon substrate surface is introduced, then by further heating up to 1200 to 1350° C., the silicon surface is thus oxidized.

摘要翻译： 提供一种制造高质量光波导基板的方法，其中硅基板的表面被相对较大的厚度氧化，并且在其表面上没有附着异物颗粒。 将用于形成光波导的石英膜的硅基板安装在含碳的陶瓷样品基底上，并插入其外周设置在加热炉中的含碳陶瓷炉芯芯管中。 当通过加热炉将炉芯管的内部加热至200至600℃时，引入用于硅衬底表面的氧化剂气体，然后进一步加热至1200至1350℃，硅表面为 从而氧化。