Abstract
We demonstrate the simultaneous existence of slow photonic and phononic modes in phoxonic nanobeam. The phoxonic nanobeam is formed by arranging air semi-cylinders along lateral sides of a suspended silicon waveguide. Because of the slow group velocities, the acousto-optical interactions are dramatically enhanced. The efficiencies of interaction are strongly related to the polarizations of both slow photonic and phononic modes. Our proposed structure is a potential high-efficiency acousto-optical modulator with ultra-small footprint size. The operating optical wavelength is about 1550 nm, while the acoustic frequency is about 6.8 GHz.
Original language | English |
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Article number | 171103 |
Journal | Applied Physics Letters |
Volume | 100 |
Issue number | 17 |
DOIs | |
Publication status | Published - 2012 Apr 23 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)