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    • 6. 发明授权
    • Resin composition for optical waveguide, and optical waveguide produced by using the resin composition
    • 用于光波导的树脂组合物和通过使用该树脂组合物制造的光波导
    • US08586286B2
    • 2013-11-19
    • US13286830
    • 2011-11-01
    • Junichi FujisawaTomoyuki Hirayama
    • Junichi FujisawaTomoyuki Hirayama
    • G02B6/10C08F2/50G03F7/004
    • G02B6/138G03F7/038G03F7/0388
    • A resin composition for an optical waveguide is provided, which permits easy formation of a core pattern using an alkali developing liquid and suppresses degradation of the alkali developing liquid. An optical waveguide produced by using the resin composition is provided. The resin composition comprises: (A) an alkali soluble resin, as a major component, having a structural unit represented by formula (1): wherein R1, R2 and R3, which may be the same or different, are each a hydrogen atom or a methyl group; R5 and R6, which may be the same or different, are each a hydrogen atom or a methyl group; R4 is and m+n+p=1, m>0, n>0 and p>0; and (B) a photopolymerization initiator. The optical waveguide includes a substrate, a cladding layer provided thereon, and a core portion provided in the cladding layer for transmitting an optical signal.
    • 提供了一种用于光波导的树脂组合物,其允许使用碱性显影液容易地形成芯图案并抑制碱性显影液的劣化。 提供了使用该树脂组合物制造的光波导。 树脂组合物包含:(A)具有由式(1)表示的结构单元作为主要成分的碱溶性树脂:其中可以相同或不同的R 1,R 2和R 3各自为氢原子或 甲基; R5和R6可以相同或不同,分别为氢原子或甲基; R4是和m + n + p = 1,m> 0,n> 0和p> 0; 和(B)光聚合引发剂。 光波导包括衬底,设置在其上的覆层,以及设置在包层中的用于发送光信号的芯部。
    • 9. 发明授权
    • Manufacturing method of optical waveguide device and optical waveguide device obtained thereby
    • 由此获得的光波导器件和光波导器件的制造方法
    • US08538220B2
    • 2013-09-17
    • US12562284
    • 2009-09-18
    • Takami HikitaJunichi FujisawaYusuke Shimizu
    • Takami HikitaJunichi FujisawaYusuke Shimizu
    • G02B6/10
    • G02B6/1221G02B6/138
    • A manufacturing method of an optical waveguide device and an optical waveguide device obtained thereby. An under cladding layer is formed on the front surface of a colored-layer-coated PET substrate including a PET substrate portion and a colored layer of a color that absorbs irradiation light and formed on the back surface of the PET substrate portion, and then a photosensitive resin layer for the formation of cores is formed thereon. In forming the cores, when the irradiation light reaches the bottom surface of the PET substrate portion, most of the irradiation light is absorbed by the colored layer, so that there is little irradiation light reflected from the bottom surface of the PET substrate portion. This significantly reduces the irradiation light reflected diffusely from the PET substrate portion and reaching the photosensitive resin layer to thereby effectively suppress the surface roughening of the side surfaces of the cores.
    • 由此获得的光波导器件和光波导器件的制造方法。 在具有PET基板部分和吸收照射光并形成在PET基板部分的背面上的彩色着色层的着色层涂布的PET基板的前表面上形成下包层,然后, 在其上形成用于形成芯的感光性树脂层。 在形成芯时,当照射光到达PET基板部分的底面时,大部分照射光被着色层吸收,使得从PET基板部分的底面反射的照射光很少。 这显着地降低了从PET基板部分漫反射反射并到达感光树脂层的照射光,从而有效地抑制了芯的侧表​​面的粗糙化。