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不同分束比熔锥型光纤宽带耦合器特性研究
引用本文:林小莉,李平,王强,马宝民.不同分束比熔锥型光纤宽带耦合器特性研究[J].量子电子学报,2004,21(1):68-72.
作者姓名:林小莉  李平  王强  马宝民
作者单位:山东大学信息科学与工程学院,山东,济南,250100
基金项目:山东省青年科学家基金(02BS601)
摘    要:在弱导和弱耦合近似下,对熔锥型非对称耦合器进行了理论计算与分析,理论分析表明:这种非对称耦合器具有波长响应平坦的特性,而且非对称程度的大小直接影响耦合器输出功率的分配(即分束比);通过在拉锥过程中控制组合波导的不同直径比,可以得到不同分束比的宽带耦合器.对分束比为50%的耦合器进行了性能测试,实验结果与理论分析相吻合.

关 键 词:分束比  熔锥型  非对称耦合器  光纤  宽带
文章编号:1007-5461(2004)01-0068-05
收稿时间:2003/3/3
修稿时间:2003年3月3日

Study on Different Splitting Ratio Characteristic of Wavelength-flattened Fused-taper Fiber Couplers
LIN Xiao-li,LI Ping,WANG Qiang,MA Bao-min.Study on Different Splitting Ratio Characteristic of Wavelength-flattened Fused-taper Fiber Couplers[J].Chinese Journal of Quantum Electronics,2004,21(1):68-72.
Authors:LIN Xiao-li  LI Ping  WANG Qiang  MA Bao-min
Abstract:The asymmetrical fused-taper coupler is studied theoretically with weakly guiding and weakly coupling approximation in this paper, the analysis reveals that this kind of couplers have wavelength-flattened characteristics, and the degree of asymmetry can affect the splitting ratio directly. A wavelength-flattened coupler with different splitting ratio can be obtained by controlling the diameter ratio of two coupled arms in the process of fabrication. With 50% splitting ratio, the theoretical results agree with the experimental data.
Keywords:fiber and waveguide optics  splitting ratio  wavelength-flattened  fused-taper fiber coupler
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