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| 1 | 周期调制DFB半导体激光器的双辅助相移对空间烧孔效应的抑制作用(英文)显示文摘由于分布反馈武(DFB)半导体激光器具有结构简单、频谱稳定等优点,在光通信领域具有十分广泛的应用.传统的DFB激光器在大电流条件下容易产生空间烧孔效应,从而造成单模特性不稳定为了抑制空间烧孔效应,本文基于重构等效啁啾技术设计了具有双辅助相移的周期调制光栅结构,并从理论和实验两个方面进行了研究,理论仿真和实验结果吻合.男外仿真计算了激光器谐振腔中光场分布的平坦因子,利用双辅助相移周期调制光栅结构DFB激光器,其腔内光场分布平坦程度得到明显提高.实验结果表明:温度25℃,注入电流50~160mA时,激光器边模抑制比均超过35dB,单模特性保持稳宅因此,本文论述的DFB激光器对空间烧孔效应具有明显抑制作用. | 郭仁甲 郑俊守 张云山 施跃春 李连艳 仇伯仓 卢林林 陈向飞 | 2015 | Science Bulletin2015，60，11： | 3 |
| 2 | Transient mode competition in directly modulated DFB semiconductor laser显示文摘A new effect of transient mode competition in directly modulated DFB laser based on equivalent phase-shift(EPS) technique is presented and studied. Since there are multi-order reflections in EPS structure and if the 0th order subgrating is properly designed, the transient lasing of 0th order will occur during the rising time of the injection current. As a result, transient mode competition between ?1st order(main mode) and 0th order will occur accordingly. This can consume redundant carrier and suppress the transient relaxation oscillation, which may be applied in some areas like on-off switching modulation of DFB semiconductor lasers. As an example, an equivalent ? phase shift(?-EPS) is carefully designed to realize the effect. In such a laser the 0th order wavelength is in the margin of the material gain region and the ?1st order wavelength is around the gain peak, while the stable single longitudinal mode(SLM) operation of the ?1st order is guaranteed. The simulation investigation is performed. Good results with suppressed relaxation oscillation and 1.25 Gb/s directly on-off modulation(32 d B extinction ratio) are demonstrated. We believe it provides a new kind of method for on-off switching with high extinction ratio and weak relaxation oscillation. | XIAO RuLei SHI YueChun ZHENG JiLin ZHANG YunShan ZHENG JunShou CHEN XiangFei | 2015 | Science China(Physics,Mechanics & Astronomy)2015，58，12： | 1 |
| 3 | 阵列宽带集成光电收发模块显示文摘文章提出一种应用于光载无线通信系统的阵列集成宽带收发模块,具有宽频带、高线性度、低损耗等优良性能。重点介绍了光收发模块的整体结构设计,包括高频管壳结构设计、微波电路设计、光学结构设计等。基于三维微波电路结构,实现了四通道阵列收发模块的混合集成研制,其级联-3dB带宽均达到18GHz以上,在DC-18GHz带宽内反射损耗均在-10dB以下,输入1dB压缩点达19dBm,无杂散动态范围为110dB·Hz 2/3。 | 张志珂 刘建国 韩雪妍 赵泽平 | 2020 | 空间电子技术2020，17，4： | 0 |
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