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W型色散光纤带通滤波特性的研究 被引量:8

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摘要 结合色散光纤在线滤波和W型光纤的长波长截止性能,研究了W型色散光纤的带通滤波特性。选取SiO2作为纤芯,一定掺杂浓度的SiO2-F和SiO2-B2O3分别作为内外包层,经过设计,实现了带通滤波功能。通过有限元法仿真及数值计算,得出了基模的能量损耗谱及通带内外各个波长处的横截面能量分布图,其截止波长和带宽可以通过控制掺杂浓度和结构参数来调整。此外还进一步分析了纤芯半径大小及中心空气孔凹陷的存在对滤波特性的影响,结果表明,减小纤芯半径和增大空气孔能减小带宽和增大通带边缘的陡度。
机构地区 南开大学商学院
出处 《当代财经》 CSSCI 北大核心 2011年第1期74-84,共11页 Contemporary Finance and Economics
基金 基金项目:国家自然科学基金项目(70771048,71072095)、教育部人文社科重点研究基地--南开大学公司治理研究中心重大项目(2009jjD630001)
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