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    • 8. 发明公开
    • LIGHT GUIDE AND LIGHT GUIDE STRUCTURE
    • LICHTLEITER UND LICHTLEITERSTRUKTUR
    • EP2083293A1
    • 2009-07-29
    • EP06832775.8
    • 2006-11-16
    • Sumitomo Bakelite Company, Ltd.
    • CHOKI, KojiMORI, TetsuyaTAKAHAMA, KeizoFUJIWARA, MakotoWATANABE, KeiOWARI, Hiroshi
    • G02B6/12C08F232/08
    • G02B6/1221C08L51/003C08L53/00G02B1/045G02B6/138G02B6/43C08L2666/02
    • An optical waveguide structure has excellent heat resistance and a low water absorbing property and can be manufactured with a low material cost. Such an optical waveguide structure includes: an optical waveguide having two surfaces, a core layer including core portions and cladding portions each having refractive index lower than that of each of the core portions, the core layer having two surfaces, and cladding layers provided so as to make contact with the two surfaces of the core layer and having a refractive index lower than that of each of the core portions; and conductor layers provided on the two surfaces of the optical waveguide. In the optical waveguide structure, each of the cladding layers is formed of a norbornene-based polymer as a major component thereof. Further, it is preferred that the norbornene-based polymer is composed of molecules each represented by the following formula 1 as a major component thereof:

      wherein R is an alkyl group having a carbon number of 1 to 10, "a" is an integer of 0 to 3, "b" is an integer of 1 to 3, and "p" / "q" is 20 or less.
    • 光波导结构具有优异的耐热性和低吸水性,并且可以以低的材料成本制造。 这种光波导结构包括:具有两个表面的光波导,包括芯部的芯层和折射率低于每个芯部的折射率的包层部分,芯层具有两个表面,并且包层设置为 以与芯层的两个表面接触并且具有比每个芯部的折射率低的折射率; 以及设置在光波导的两个表面上的导体层。 在光波导结构中,每个包层由作为其主要成分的降冰片烯系聚合物形成。 此外,优选降冰片烯系聚合物由以下式1表示的分子作为其主要成分:其中,R为碳数为1〜10的烷基,“a”为 0〜3,“b”为1〜3的整数,“p”/“q”为20以下。