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Investigations on high speed directly modulated microcircular lasers

机译：高速直接调制微圆激光器的研究

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摘要

High speed modulation characteristics are investigated for microcircular lasers connected with an output waveguide theoretically and experimentally. The injection current profile and carrier spatial hole-burning and diffusion are accounted in the rate equation model by radially dividing the microcircular resonator into two regions under the approximation of uniform carrier densities. The numerical results indicate that wide mode field pattern in radial direction has merit for high speed modulation, which is expected for coupled modes in circular microlasers connected with an output waveguide. Small signal response curves and large signal modulation responses are investigated for a 15-μm-radius microlaser connected with a 2 μm wide output waveguide. The highest resonance 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 12.5Gbit/s with an extinction ratio of 6.1 dB are observed for the microlaser at biasing current of 38 mA and the temperature of 287 K.
机译：理论上和实验上研究了与输出波导相连的微圆形激光器的高速调制特性。在速率方程模型中，通过在均匀载流子密度的近似下将微圆形谐振腔径向划分为两个区域，在速率方程模型中考虑了注入电流分布和载流子在空穴中的燃烧和扩散。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圆形微激光器中的耦合模式是可以预期的。对于连接2μm宽输出波导的15μm半径微激光器，研究了小信号响应曲线和大信号调制响应。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的最高谐振频率，并且在12.5Gbit / s的消光比为6.1 dB的情况下观察到清晰的眼图。偏置电流为38 mA且温度为287 K的微型激光器。

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  • 来源
  • 会议地点 San Francisco CA(US)
  • 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

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

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

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

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

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

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

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

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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

    机译：微谐振器；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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