光学学报, 2017, 37 (4): 0406005, 网络出版: 2017-04-10   

量子点半导体光放大器的波长转换效率

Wavelength Conversion Efficiency of Quantum Dot Semiconductor Optical Amplifier
作者单位
1 曲阜师范大学物理工程学院山东省激光偏光与信息技术重点实验室, 山东 曲阜 273165
2 中国科学院上海微系统与信息技术研究所信息功能材料国家重点实验室, 上海 200050
摘要
为提高全光波长转换器的波长转换效率,在量子点半导体光放大器(QD-SOA)波长转换特性研究的基础上,分别对基于交叉增益调制(XGM)效应和交叉相位调制(XPM)效应的全光波长转换器的转换效率进行了仿真分析。利用三能级QD-SOA模型并基于XGM型全光波长转换器,计算了输入脉冲宽度、有源区长度、损耗系数、最大增益模式和电子跃迁时间的变化对转换效率的影响。结果表明,减小输入脉冲宽度、损耗系数、电子跃迁时间和增加有源区长度、最大增益模式均可以提高全光波长转换器的转换效率。该研究对全光逻辑异或门的设计及QD-SOA的应用有一定的指导意义。
Abstract
In order to improve the wavelength conversion efficiency of all-optical wavelength converter, the conversion efficiency of all-optical wavelength converter based on the cross-gain modulation (XGM) effect and the cross-phase modulation (XPM) effect is analyzed on the basis of the research of wavelength conversion characteristics of quantum dot semiconductor optical amplifier (QD-SOA). Based on the XGM type all-optical wavelength converter and the three-level QD-SOA model, the effects of input pulse width, active region length, loss coefficient, maximum gain mode and electron transition time on conversion efficiency are calculated. The results show that reducing the input pulse width, loss coefficient and electron transition time and increasing the active region length and the maximum gain mode can improve the conversion efficiency of all-optical wavelength converter. The study is useful for the design of all-optical logic XOR gate and the application of QD-SOA.
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杨文华, 王海龙, 王兆翔, 韦志禄, 龚谦. 量子点半导体光放大器的波长转换效率[J]. 光学学报, 2017, 37(4): 0406005. Yang Wenhua, Wang Hailong, Wang Zhaoxiang, Wei Zhilu, Gong Qian. Wavelength Conversion Efficiency of Quantum Dot Semiconductor Optical Amplifier[J]. Acta Optica Sinica, 2017, 37(4): 0406005.

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