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Investigations on high speed directly modulated microdisk lasers accounting for radial carrier hole burning

机译：高速直接调制微盘激光器研究径向载孔烧蚀的研究

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摘要

High-speed modulation characteristics are investigated for microdisk lasers theoretically and experimentally. In rate equation analysis, the microdisk resonator is radially divided into two regions under uniform carrier density approximation in each region. The injection current profile, carrier spatial hole burning, and diffusion are accounted for in the evaluation of small-signal modulation curves and the simulation of large-signal responses. The numerical results indicate that a wide mode field pattern in radial direction has merit for highspeed modulation, which is expected for coupled modes in the microdisk lasers connected with an output waveguide. For a 15-μm-radius microdisk laser connected with a 2-μm-wide output waveguide, the measured small-signal response curves with a low-frequency roll-off are well in agreement with the simulated result at a 2-μm radial width for the mode intensity distribution. The resonant frequencies of 7.2, 5.9, and 3.9 GHz are obtained at the temperatures of 287, 298, and 312 K from the small-signal response curves, and clear eye diagrams at 12.5 Gb/s with an extinction ratio of 6.1 dB are observed for the microdisk laser at the biasing Current Of 38 mA and 287 K.
机译：理论上和实验上研究了微盘激光器的高速调制特性。在速率方程分析中，在每个区域中以均匀的载流子密度近似，将微型磁盘谐振器径向分为两个区域。在小信号调制曲线的评估和大信号响应的仿真中考虑了注入电流分布，载流子空间空穴燃烧和扩散。数值结果表明，在径向方向上的宽模式场模式具有高速调制的优点，这对于与输出波导连接的微盘激光器中的耦合模式是可以预期的。对于连接了2μm宽输出波导的15μm半径微盘激光器，测得的具有低频滚降的小信号响应曲线与2μm径向宽度处的模拟结果非常吻合用于模式强度分布。根据小信号响应曲线，在287、298和312 K的温度下可获得7.2、5.9和3.9 GHz的谐振频率，观察到在12.5 Gb / s时的清晰眼图，消光比为6.1 dB偏置电流为38 mA和287 K的微盘激光器

著录项

  • 来源
    《Optical engineering》 |2014年第4期|046104.1-046104.7|共7页
  • 作者

    Yong-Zhen Huang; Xiao-Meng Lv; Ling-Xiu Zou; Heng Long; Jin-Long Xiao; Yue-De Yang; Yun Du;

  • 作者单位

    Chinese Academy of Sciences, Institute of Semiconductors, State Key Laboratory on Integrated Optoelectronics, P.O. Box 912, Beijing 100083, China;

    Chinese Academy of Sciences, Institute of Semiconductors, State Key Laboratory on Integrated Optoelectronics, P.O. Box 912, Beijing 100083, China;

    Chinese Academy of Sciences, Institute of Semiconductors, State Key Laboratory on Integrated Optoelectronics, P.O. Box 912, Beijing 100083, China;

    Chinese Academy of Sciences, Institute of Semiconductors, State Key Laboratory on Integrated Optoelectronics, P.O. Box 912, Beijing 100083, China;

    Chinese Academy of Sciences, Institute of Semiconductors, State Key Laboratory on Integrated Optoelectronics, P.O. Box 912, Beijing 100083, China;

    Chinese Academy of Sciences, Institute of Semiconductors, State Key Laboratory on Integrated Optoelectronics, P.O. Box 912, Beijing 100083, China;

    Chinese Academy of Sciences, Institute of Semiconductors, State Key Laboratory on Integrated Optoelectronics, P.O. Box 912, Beijing 100083, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    microdisk lasers; semiconductor lasers; quality factor; whispering-gallery modes; mode coupling; finite-difference time-domain technique;

    机译：微盘激光器;半导体激光器;品质因数窃窃私语的画廊模式;模式耦合时域有限差分技术;

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