Effects of waveguide length and pump power on the efficiency of wavelength conversion in silicon nanowire waveguides.
Effects of waveguide length and pump power on the efficiency of wavelength conversion in silicon nanowire waveguides.
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DOI：
10.1364/ol.34.003502
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发表时间：
2009-11
期刊：
影响因子：
3.6
通讯作者：
L. Jia;Minming Geng;Lei Zhang;Lin Yang;Ping Chen;Yuliang Liu;Q. Fang;Mingbin Yu
中科院分区：
文献类型：
--
作者：
L. Jia;Minming Geng;Lei Zhang;Lin Yang;Ping Chen;Yuliang Liu;Q. Fang;Mingbin Yu
指出了文献中对转换效率的错误定义，并根据正确定义分析了波导长度和泵浦功率对转换效率的影响。从理论和实验上证明了局部最优波导长度和泵浦功率的存在。进一步分析表明，同时对波导长度和抽运功率进行全局优化，可以达到转换效率的极值，而转换效率仅受线性传播损耗和有效载流子寿命的限制。
We point out the use of a wrong definition for conversion efficiency in the literature and analyze the effects of the waveguide length and pump power on conversion efficiency according to the correct definition. The existence of the locally optimal waveguide length and pump power is demonstrated theoretically and experimentally. Further analysis shows that the extremum of conversion efficiency can be achieved by global optimization of the waveguide length and pump power simultaneously, which is limited by just the linear propagation loss and the effective carrier lifetime.