Photonic bandgap structures can also be utilized for the realization of transformational optical devices like metamaterials. In this Letter, the possibility of cylindrical to plane wave source transformation in an open cavity formed by one dimensional photonic crystal is demonstrated. It is observed that the gap solitary wave behavior at the near-bandgap regime is fair enough to produce highly directional plane waves out of the point source placed inside the open cavity. The limitations of such a source transformation device are governed by the strength of the bandgap that decides the amplitude of the emitted plane waves.
© 2011 Optical Society of AmericaFull Article | PDF Article
Sébastien Steiner, Jean Hare, Valérie Lefèvre-Seguin, and Jean-Michel Gérard
Opt. Express 15(16) 10052-10060 (2007)
M. Rahm, D. A. Roberts, J. B. Pendry, and D. R. Smith
Opt. Express 16(15) 11555-11567 (2008)
D. A. Roberts, N. Kundtz, and D. R. Smith
Opt. Express 17(19) 16535-16542 (2009)