OREGON STATE UNIVERSITY

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Electro-optic polymer infiltrated silicon photonic crystal slot waveguide modulator with 23 dB slow light enhancement

TitleElectro-optic polymer infiltrated silicon photonic crystal slot waveguide modulator with 23 dB slow light enhancement
Publication TypeJournal Article
Year of Publication2010
AuthorsLin, C-Y., A. X. Wang, S. Chakravarty, B S. Lee, W. Lai, J. Luo, A. K. - Y. Jen, and R. T. Chen
JournalApplied Physics Letters
Volume97
Issue9
Pagination093304
Date Published08/2010
ISSN00036951
Keywordselectro-optical modulation, elemental semiconductors, optical polymers, optical waveguides, photonic crystals, silicon, slow light
Abstract

A silicon/organic hybrid modulator integrating photonic crystal (PC) waveguide, 75 nm slot, and electro-optic (EO) polymer is experimentally demonstrated. Slow light in PC waveguide and strong field confinement in slot waveguide enable ultraefficient EO modulation with a record-low V<sub>π</sub>×L of 0.56 V mm and an in-device effective r&#8323;&#8323; of 132 pm/V. This result makes it the most efficient EO polymer modulator demonstrated to date. The modulated signal shows strong wavelength dependence and peak enhancement of 23 dB near the band edge of defect mode, which confirms the signature of the slow light effect.

DOI10.1063/1.3486225
Short TitleAppl. Phys. Lett.