@INPROCEEDINGS {13779,
author={J. Torres  and A. Baptista and VMM Machado},
doi={10.1109/EUROCON.2011.5929381},
booktitle={Conf. on Telecommunications  - ConfTele},
title={Analysis of dielectric optical ring slab waveguides with interband absorption},
year={2011},
month={April},
volume={1},
pages={1-3} 
}