期刊
OPTICS EXPRESS
卷 21, 期 17, 页码 20274-20279出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.21.020274
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Ultrafast all-optical modulation in silicon-based metal-insulator-semiconductor-insulator-metal nanoring resonators through photogeneration of free-carriers using two-photon absorption is presented 3-D through finite difference time domain simulations. In a compact device footprint of only 1.4 mu m(2), a 13.1dB modulation amplitude was obtained with a switching time of only 2ps using a modest pump pulse energy of 16.0pJ. The larger bandwidth associated with more compact nanorings is shown to result in increased modulation amplitude. (C) 2013 Optical Society of America
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