【作者】 孙军强； 刘威； 刘德明； 黄德修；

【Author】 Sun Junqiang, Liu Wei, Liu Deming, Huang Dexiu Department of Optoelectronic Engineering Huazhong University of Science and Technology, Wuhan, 430074

【机构】 华中科技大学光电子工程系；

【摘要】 全光多波长转换已被公为是未来密集波分复用光纤通信系统的关键技术。应用准相位匹配的LiNbO3光波导的差频效应实现的多波长转换,由于独特的透明特性,获得了极大的关注。本文报道了基于周期域反转的LiNbO3光波导的级联二阶非线性10个波长的同时全光转换。多波长信号是由包含半导体光放大器的环形激光器产生,无需外界注入泵浦光且器件工作波长在1550nm波段内。腔内泵浦功率小于100mW,波长转换带宽约为70nm。由于增强了泵浦与信号的相互作用,转换效率和器件的噪声性能获得了明显的改善。更多还原

【Abstract】 All-optical wavelength conversion is expected to be a crucial technology in the future wavelength-division-multiplexed optical communication systems. Multiwavelength conversion exploiting difference frequency generation in quasi-phase-matching LiNbO3 optical waveguides has attracted intensive attentions owing to its unique transparency characteristics. This paper presents the realization of simultaneous ten-wavelength conversion based on the cascaded second-order nonlinearity in periodically domain-inverted LiNbO3 waveguides. Multiwavelength signal is generated using the ring laser incorporating semiconductor optical amplifier and no external pump input is required with this configuration. Approximate 70nm conversion bandwidth is implemented under pump power less than 100mW at 1550nm band. Both conversion efficiency and noise property are improved due to the enhancement of pump and signal interaction.更多还原