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

doi:10.1088/1674-1056/22/9/094209

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 (V_n) of the proposed cavity can be engineered independently. As a result, the spontaneous emission (SpE) rate is enhanced with a small V_n 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.

Keywords: photonic crystals nanocavities light emitting diodes

Received: 12 April 2013
Revised: 24 April 2013
Accepted manuscript online:

PACS:	42.55.Tv	(Photonic crystal lasers and coherent effects)
	42.70.Qs	(Photonic bandgap materials)
	42.82.Bq	(Design and performance testing of integrated-optical systems)

Fund: 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).

Corresponding Authors: Cui Kai-Yu
E-mail: kaiyucui@tsinghua.edu.cn

Cite this article:

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) Horizontally slotted photonic crystal nanobeam cavity with embedded active nanopillars for ultrafast direct modulation 2013 Chin. Phys. B 22 094209

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

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