Abstract
We study the dispersion relations in slow-light waveguide structures consisting of coupled microdisk resonators. A group theoretical analysis of the symmetry properties of the propagating modes reveals a fundamental phenomenon: The degeneracy of the CW and CCW rotating modes is removed, giving rise to two distinct transmission bands. This effect induces symmetry-based dispersion which may limit the usable bandwidth of such structures. The properties of this band splitting and its impact on CROW performance for optical communications are studied in detail.
| Original language | English |
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| Pages (from-to) | 1762-1776 |
| Number of pages | 15 |
| Journal | Optics Express |
| Volume | 18 |
| Issue number | 2 |
| DOIs | |
| State | Published - 18 Jan 2010 |