...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical and quantum electronics >Ultra-fast tunable optoelectronic half adder/subtractor based on photonic crystal ring resonators covered by graphene nanoshells
【24h】

Ultra-fast tunable optoelectronic half adder/subtractor based on photonic crystal ring resonators covered by graphene nanoshells

机译：基于光子晶体环谐振器的超快速可调光电半加法器/减法器

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper reports a new design of a tunable optoelectronic half adder/subtractor. Two photonic crystal (PhC) ring resonators are used to realize the proposed structure. Several silicon rods surrounded by silica rods covered with graphene nanoshells (GNSs) form every PhC ring resonator. Setting the chemical potential of GNS with an appropriate gate voltage, we can tune the PhC resonant mode as desired. The plane wave expansion technique is used to study the photonic band structure of the fundamental PC microstructure, and the finite-difference time-domain method is employed in the final design for solving Maxwell's equations to analyze the light propagation inside the structure. We systematically study the effects of physical parameters on the transmission reflection and absorption spectra. By optimizing the geometric dimensions, resonant absorption peaks can be excited at the same time for GNSs. Our numerical results also reveal the maximum time response is about 0.8 ps. The 200 μm~2 area of the proposed half adder/subtractor makes it the building block of every photonic integrated circuit. Also, the design of various fast signal processing systems in optical communication networks is possible due to using tunable GNSs in PhC ring resonators. This study can introduce the use of two-dimensional materials in the design and implementation of logic circuits.
机译：本文报告了可调谐光电半加法器/减法器的新设计。两个光子晶体（PHC）环谐振器用于实现所提出的结构。由石墨烯纳米罩（GNSS）覆盖的二氧化硅棒包围的几种硅棒形成了每个PHC环谐振器。使用适当的栅极电压设置GNS的化学电位，我们可以根据需要调整PHC谐振模式。平面波扩展技术用于研究基本PC微结构的光子带结构，并且在最终设计中采用有限差分时间域方法，用于求解麦克斯韦方程以分析结构内的光传播。我们系统地研究了物理参数对传输反射和吸收光谱的影响。通过优化几何尺寸，可以同时对GNSS进行激发谐振吸收峰。我们的数值结果还揭示了最大时间响应约为0.8 ps。所提出的半加法器/减法器的200μm〜2面积使其成为每个光子集成电路的构建块。而且，由于在PHC环谐振器中使用可调谐GNSS，可以在光通信网络中设计各种快速信号处理系统。本研究可以在逻辑电路的设计和实现中引入二维材料的使用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号