Reflection noise reduction effect of graded-index plastic optical fiber in multimode fiber link.
Reflection noise reduction effect of graded-index plastic optical fiber in multimode fiber link.
复制标题
多模光纤链路中渐变折射率塑料光纤的反射降噪效果。
DOI：
10.1364/ol.39.003662
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发表时间：
2014
期刊：
影响因子：
3.6
通讯作者：
Y. Koike
中科院分区：
文献类型：
--
作者：
A. Inoue;R. Furukawa;M. Matsuura;Y. Koike
实验表明，渐变折射率塑料光纤（GI POF）可以显着降低多模光纤与垂直腔面发射激光器（VCSEL）的链路中的反射噪声。通过直接观察光束回射到VCSEL，我们表明，降噪效果是密切相关的随机模式耦合，因为在GI POF芯材料的微观不均匀性的光散射。这表明本征模耦合可以通过光束质量劣化降低背反射到VCSEL腔的光的自耦合效率。使用GI POF，可以在没有光隔离器或光纤端面抛光的情况下实现用于室内网络的低成本光纤无线电系统。
We experimentally demonstrate that a graded-index plastic optical fiber (GI POF) can significantly reduce reflection noise in a multimode fiber link with a vertical-cavity surface-emitting laser (VCSEL). By directly observing beams backreflected to the VCSEL, we show that the noise reduction effect is closely related to random mode coupling because of light scattering by microscopic heterogeneities in the GI POF core material. This suggests that intrinsic mode coupling can lower the self-coupling efficiency of the light backreflected to the VCSEL cavity through beam quality degradation. Using GI POFs, low-cost radio-over-fiber systems for indoor networks can be realized without optical isolators or fiber end-face polishing.