Title :
Photonic crystal based beam aperture modifier and deflector
Author :
Lu, Mengqian ; Juluri, Bala Krishna ; Lin, Sz-Chin Steven ; Huang, Tony Jun
Author_Institution :
Dept. of Eng. Sci. & Mech., Pennsylvania State Univ., University Park, PA, USA
Abstract :
We have designed and simulated a parabolic gradient-index (GRIN) photonic crystal (PC) based beam aperture modifier and a deflector. The parabolic GRIN PC is achieved by using free standing dielectric columns with graded radii transverse to the light propagation direction. The performance of the beam aperture modifier and the deflector can be tuned by changing the gradient coefficient of the GRIN PCs. Finite-difference time-domain (FDTD) methods were used to characterize changes in beam width and propagation direction. Compared with conventional approaches, the GRIN PC-based beam aperture modifier and beam deflector described here can be conveniently fabricated down to the micrometer scale.
Keywords :
finite difference time-domain analysis; gradient index optics; light propagation; photonic crystals; deflector; finite-difference time-domain methods; free standing dielectric columns; graded radii; gradient coefficient; light propagation; parabolic gradient-index photonic crystal; photonic crystal based beam aperture modifier; Apertures; Finite difference methods; Indexes; Optimized production technology; Photonic crystals; Photonics; Refractive index; Microfabrication; Nanophotonics;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2011 IEEE International Conference on
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-61284-775-7
DOI :
10.1109/NEMS.2011.6017346
