@inproceedings{bda4e8170272458aad12746416984e96,
title = "Flat collimating lenses based on quasi-conformal transformation electromagnetics",
abstract = "This paper demonstrates two collimating lenses designed using the quasi-conformal transformation optics (TO) technique to radiate multiple directive beams when fed by a simple embedded line source. Using the Finite-Difference Time-Domain (FDTD) method, we perform full-wave numerical simulations to demonstrate their optical performance. Well-collimated beams can be visualized in the near-field region of the TO devices with a corresponding directive radiation pattern demonstrated in the far-field. Thin anti-reflection coatings can be employed to enhance the directivity by reducing reflections at the lens surfaces. These designs only require spatially-varying dielectric materials with no magnetic properties, facilitating low-loss, broadband operation in both the microwave and optical regimes.",
author = "Qi Wu and Turpin, {Jeremiah P.} and Werner, {Douglas H.} and Werner, {Pingjuan L.} and Wenxuan Tang and Yang Hao",
year = "2012",
month = jul,
day = "2",
doi = "10.1109/EuCAP.2012.6206590",
language = "English (US)",
isbn = "9781457709180",
series = "Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012",
pages = "1696--1700",
booktitle = "Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012",
note = "6th European Conference on Antennas and Propagation, EuCAP 2012 ; Conference date: 26-03-2012 Through 30-03-2012",
}