聚合物光纤光谱损耗特性的研究

截断法测量聚合物光纤 ( POF)的光谱特性是研究其损耗的一种有效方法 .用平面光栅单色仪对聚合物光纤聚甲基丙烯酸甲酯 ( PMMA)和聚苯乙烯 ( PS)的损耗光谱进行了测量 ,结果 PMMA芯 POF有三个传输窗口 ,分别为 5 2 0 nm,5 74nm,65 0 nm.在 5 2 0 nm,5 74nm处的损耗较小 ,且特性较为平坦 ,有很好的应用前景 . PS芯 POF窗口分别为 5 5 0 nm,5 80 nm,63 0 nm,670 nm,73 3 nm和 780 nm.在 5 5 0 nm,5 80 nm处同样有较好的应用前景

Research of attenuation spectrum of polymer optical fiber

Truncation is an efficient way to measure attenuation spectrum of POF. The equipment for measuring the attenuation of PMMA and PS fiber has been set up by using aplanar diffraction grating device. The three windows of PMMA are 520 nm,574 nm, and 650 nm. The loss at 520 nm and 574 nm is smaller and the attenuation is flatter. So this window can be used better. PS fiber has been found to have six windows, namely 550 nm, 580 nm, 630 nm, 670 nm, 733 nm and 780nm in the range of measurement. The two windows of 550 nm and 580 nm are suitable for exploring.