公开(公告)号：US06996324B2

公开(公告)日：2006-02-07

申请号：US10432920

申请日：2002-09-18

申请人： Masahiro Hiraka ,  Shigeo Furukawa

发明人： Masahiro Hiraka ,  Shigeo Furukawa

IPC分类号： G02B6/00 ,  G02B6/10 ,  C03B37/022 ,  C03B37/033 ,  C03B37/075

CPC分类号： G02B6/138 ,  G02B6/02042 ,  G02B6/10 ,  G02B6/12 ,  G02B6/132 ,  G02B6/25 ,  G02B2006/12176

摘要： An optical waveguide comprising cladding 1 and core segment 20 buried in cladding 1 and serving as a waveguide, wherein a combination of glass material constituting the core segment 20 and another glass material constituting the cladding 1 is so selected that an absolute value of difference in coefficient of thermal expansion between these materials (α1-α2) is within a range of 0 and 9×10−7° C., where α1 denotes a coefficient of thermal expansion of the former material and α2 denotes that of the latter material. Since this makes possible to bond directly the glass materials having different refraction factors and different coefficients of thermal expansion, and to produce the optical waveguide at even a lower temperature as compared to the prior art method as an upper cladding layer is formed with the sputtering method, it realizes reduction in number of processes and time of manufacture, thereby providing the optical waveguide of low transmission loss at low cost, as well as a method of manufacturing the same.

摘要翻译： 光波导包括覆盖层和掩埋在包覆层中并用作波导的芯部分。 选择构成芯部分的玻璃材料和构成包覆层的另一种玻璃材料的组合，使得这些材料（α1-α2）之间的热膨胀系数差的绝对值在0和9×10 < SUP> -7℃，其中α1表示前者材料的热膨胀系数，α2表示后者材料的热膨胀系数。