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Slow light in tapered slot photonic crystal waveguide
  • ISSN号:1001-6538
  • 期刊名称:科学通报(英文版)
  • 时间:0
  • 页码:3658-3662
  • 语言:中文
  • 分类:TN252[电子电信—物理电子学] TH49[机械工程—机械制造及自动化]
  • 作者机构:[1]State Key Laboratory on Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
  • 相关基金:Supported by the Major State Basic Research Development Program of China (973 Program) (Grant No. 2006CB604901), National Natural Science Foundation of China (Grant No. 60807016), and China Postdoctoral Science Foundation (Grant No. 20080430279)
  • 相关项目:用于全光缓存的硅基光子晶体慢光结构研究
中文摘要:

slotted 有线性逐渐变细的槽的单个模式的 photonic 水晶波导被介绍认识到慢光,曲线其分散被改变槽宽度转移。当槽宽度被减少时,在逐渐变细的结构的乐队曲线移动,和光的组速度在截止频率接近零。因此,指导的光的不同频率部件被减慢沿着在逐渐变细的槽 photonic 水晶波导内的繁殖方向甚至局部性。而且,这结构能在狭窄的槽波导限制慢光波,它可以有效地提高在慢光之间的相互作用,低索引的 wave-guiding 材料填槽。另外,这逐渐变细的槽结构能被用来由修改结构补偿慢光的组速度分散,因此为极端宽的带宽打开机会慢光。

英文摘要:

A slotted single-mode photonic crystal waveguide with a linear tapered slot is presented to realize slow light, whose dispersion curve is shifted by changing the slot width. When the slot width is reduced, the band curve shifts in the tapered structure, and the group velocity of light approach zero at the cut-off frequency. Therefore, different frequency components of the guided light are slowed down even localized along the propagation direction inside a tapered slot photonic crystal waveguide. Furthermore, this structure can confine slow light-wave in a narrow slot waveguide, which may effectively enhance the interaction between slow light and the low-index wave-guiding materials filled in the slot. In addition, this tapered slot structure can be used to compensate group velocity dispersion of slow light by modifying the structure, thus opening the opportunity for ultra-wide bandwidth slow light.

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