中国物理B ›› 2013, Vol. 22 ›› Issue (9): 94209-094209.doi: 10.1088/1674-1056/22/9/094209

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Horizontally slotted photonic crystal nanobeam cavity with embedded active nanopillars for ultrafast direct modulation

王达, 崔开宇, 冯雪, 黄翊东, 李永卓, 刘仿, 张巍   

  1. Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China
  • 收稿日期:2013-04-12 修回日期:2013-04-24 出版日期:2013-07-26 发布日期:2013-07-26
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2011CBA00608), the China Postdoctoral Science Foundation, and the National Quality Inspection Service Industry Scientific Research of China (Grant No. 201010007).

Horizontally slotted photonic crystal nanobeam cavity with embedded active nanopillars for ultrafast direct modulation

Wang Da (王达), Cui Kai-Yu (崔开宇), Feng Xue (冯雪), Huang Yi-Dong (黄翊东), Li Yong-Zhuo (李永卓), Liu Fang (刘仿), Zhang Wei (张巍)   

  1. Department of Electronic Engineering, Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China
  • Received:2013-04-12 Revised:2013-04-24 Online:2013-07-26 Published:2013-07-26
  • Contact: Cui Kai-Yu E-mail:kaiyucui@tsinghua.edu.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2011CBA00608), the China Postdoctoral Science Foundation, and the National Quality Inspection Service Industry Scientific Research of China (Grant No. 201010007).

摘要: A horizontally slotted photonic crystal nanobeam cavity with an embedded active nanopillar structure is proposed for ultrafast direct modulation. By designing the thicknesses of both the nanobeam and the horizontal slot layer, the quality factor (Q factor) and the mode volume (Vn) of the proposed cavity can be engineered independently. As a result, the spontaneous emission (SpE) rate is enhanced with a small Vn of 2.4 while the SpE rate and the cavity photon lifetime have an optimal Q factor of ~1000. In our simulation, the modulation bandwidth could be enhanced up to 170 GHz with different emission linewidths of the active nanopillar.

关键词: photonic crystals, nanocavities, light emitting diodes

Abstract: A horizontally slotted photonic crystal nanobeam cavity with an embedded active nanopillar structure is proposed for ultrafast direct modulation. By designing the thicknesses of both the nanobeam and the horizontal slot layer, the quality factor (Q factor) and the mode volume (Vn) of the proposed cavity can be engineered independently. As a result, the spontaneous emission (SpE) rate is enhanced with a small Vn of 2.4 while the SpE rate and the cavity photon lifetime have an optimal Q factor of ~1000. In our simulation, the modulation bandwidth could be enhanced up to 170 GHz with different emission linewidths of the active nanopillar.

Key words: photonic crystals, nanocavities, light emitting diodes

中图分类号:  (Photonic crystal lasers and coherent effects)

  • 42.55.Tv
42.70.Qs (Photonic bandgap materials) 42.82.Bq (Design and performance testing of integrated-optical systems)