Koike Y, Nihel E, Tanio N, Ohtsuka Y
Appl Opt. 1990 Jun 20;29(18):2686-91. doi: 10.1364/AO.29.002686.
Graded-index plastic optical fiber whose transmission attenuation is 143 dB/km at 651-nm wavelength was fabricated by heat-drawing the corresponding GI preform rod. This rod is prepared by the interfacial-gel copolymerization technique of methyl methacrylate (MMA) and vinyl phenylacetate (VPAc). The total scattering loss of the GI preform rod is ~60 dB/km at 633 nm. The graded-index profiles of the optical fibers are almost the same as those of the corresponding preforms with cladding sheaths. The index distributions of their core regions are quadratic against the distance from the center axis. The numerical aperture estimated from the index difference is ~0.20.
通过对相应的渐变折射率预制棒进行热拉伸，制备出了在651纳米波长下传输衰减为143分贝/千米的渐变折射率塑料光纤。该预制棒是通过甲基丙烯酸甲酯（MMA）和乙烯基苯乙酸酯（VPAc）的界面凝胶共聚技术制备的。渐变折射率预制棒在633纳米处的总散射损耗约为60分贝/千米。光纤的渐变折射率分布与带有包层护套的相应预制棒几乎相同。其纤芯区域的折射率分布相对于距中心轴的距离呈二次函数关系。根据折射率差估算的数值孔径约为0.20。
