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Proceedings Paper

Realization of tunable photonic crystals based on the metal-insulator transition of VO2
Author(s): D. Xiao; K. W. Kim; J. M. Zavada; G. Lazzi
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Paper Abstract

The feasibility of an electrically programmable photonic crystal (PC) is investigated theoretically based on the metal-insulator transition of vanadium dioxide (VO2). We propose a slab structure based on VO2 whose dielectric properties can be modulated by selectively applying the bias on a lithographically defined array of gate electrodes to induce the phase transition. So, unlike the ordinary PCs, wave propagation in the desired structure may be switched on/off or redirected to our satisfaction. To examine the idea, the photonic band structure (PBS) and the wave guiding characteristics are investigated by using the iterative plane wave expansion and the finite difference time domain methods. The results clearly indicate that the changes induced in the VO2 dielectric properties via the phase transition can enable effective modulation of wave propagation at a high speed, offering a promising opportunity for a photonic circuit that can be programmed or reconfigured on demand.

Paper Details

Date Published: 28 February 2006
PDF: 9 pages
Proc. SPIE 6128, Photonic Crystal Materials and Devices IV, 61280A (28 February 2006);
Show Author Affiliations
D. Xiao, North Carolina State Univ. (United States)
K. W. Kim, North Carolina State Univ. (United States)
J. M. Zavada, U.S. Army Research Office (United States)
G. Lazzi, North Carolina State Univ. (United States)

Published in SPIE Proceedings Vol. 6128:
Photonic Crystal Materials and Devices IV
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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