Two-dimensional photonic crystals with anisotropic unit cells imprinted from PDMS membranes under elastic deformation

Xuelian Zhu; Ying Zhang; Dinesh Chandra; Shih-Chieh Cheng; James M. Kikkawa; Shu Yang

doi:10.1117/12.809275

16 February 2009 Two-dimensional photonic crystals with anisotropic unit cells imprinted from PDMS membranes under elastic deformation

Xuelian Zhu, Ying Zhang, Dinesh Chandra, Shih-Chieh Cheng, James M. Kikkawa, Shu Yang

Author Affiliations +

Proceedings Volume 7223, Photonic and Phononic Crystal Materials and Devices IX; 72231C (2009) https://doi.org/10.1117/12.809275
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

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.

Citation Download Citation

Xuelian Zhu, Ying Zhang, Dinesh Chandra, Shih-Chieh Cheng, James M. Kikkawa, and Shu Yang "Two-dimensional photonic crystals with anisotropic unit cells imprinted from PDMS membranes under elastic deformation", Proc. SPIE 7223, Photonic and Phononic Crystal Materials and Devices IX, 72231C (16 February 2009); https://doi.org/10.1117/12.809275

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