Abstract
We investigated the physical mechanism of a photonic crystal (PhC)
switching cell based on an optical directional coupler (ODC). This ODC
is driven by a low power external electrical command signal, inserted in
the central coupling region, which causes the changes in the refractive
index.
The switching process is based on the change of the bar state to the
cross state owing to the external command signal. In our simulations we
used the following methods: Plane Wave Expansion by MPB (MIT
Photonic-Bands), Finite-Difference Time-Domain by MEEP (MIT
Electromagnetic Equation Propagation), Finite Element by COMSOL
Multiphysics and our own Binary Propagation Method. (c) 2012 Elsevier
B.V. All rights reserved.
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