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Proceedings Paper

Two-dimensional photonic crystals with anisotropic unit cells imprinted from PDMS membranes under elastic deformation
Author(s): Xuelian Zhu; Ying Zhang; Dinesh Chandra; Shih-Chieh Cheng; James M. Kikkawa; Shu Yang
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Paper Abstract

We study structural symmetries of two-dimensional (2D) photonic crystals with anisotropic unit cells, including square- and rectangular-lattices with orientationally modulated elliptic motifs, a compound structure consisting of circles with 6-fold rotational symmetry and elliptical lines with 2-fold symmetry, and a rectangular lattice of aligned ovals, which are created through elastic deformation of an elastomeric membrane with circular pores. We then investigate the photonic bandgap (PBG) properties of the corresponding 2D Si posts, and their tolerance to the structural deviation. We find that in the compound structure the overall PBGs are dominated by the sublattice with a higher symmetry, while the total symmetry is determined by the one with a lower symmetry.

Paper Details

Date Published: 16 February 2009
PDF: 6 pages
Proc. SPIE 7223, Photonic and Phononic Crystal Materials and Devices IX, 72231C (16 February 2009); doi: 10.1117/12.809275
Show Author Affiliations
Xuelian Zhu, Univ. of Pennsylvania (United States)
Ying Zhang, Univ. of Pennsylvania (United States)
Dinesh Chandra, Univ. of Pennsylvania (United States)
Shih-Chieh Cheng, Univ. of Pennsylvania (United States)
James M. Kikkawa, Univ. of Pennsylvania (United States)
Shu Yang, Univ. of Pennsylvania (United States)

Published in SPIE Proceedings Vol. 7223:
Photonic and Phononic Crystal Materials and Devices IX
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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