Abstract

We systematically investigated the negative-refraction effect for both TE and TM polarizations in annular photonic crystals. Since two polarization waves are excited in different bands, they result in different refractive angles, and so polarization beam splitters can be made of annular photonic crystals. It was found that, in comparison to normal square-lattice air-hole photonic crystals, annular photonic crystals have a much wider common frequency band between TE-1 and TM-2, which is quite beneficial to finding the overlap between the negative-refraction regions belonging to TE-1 and TM-2 respectively. Further analyses of equifrequency surfaces and the electric-field distribution of annular photonic crystals with different parameters have not only demonstrated how the filling factor of annular cells affects the formation of the common negative-refraction region between TE-1 and TM-2, but also revealed some ways to improve the performance of a polarization beam splitter based on the negative-refraction effect in an annular photonic crystal.

© 2018 Optical Society of Korea

Polarization beam splitters based on a two-dimensional photonic crystal of negative refraction

Xianyu Ao and Sailing He
Opt. Lett. 30(16) 2152-2154 (2005)

Dual-negative-refraction and imaging effects in normal two-dimensional photonic crystals with hexagonal lattices

Liyong Jiang, Hong Wu, and Xiangyin Li
Opt. Lett. 37(11) 1829-1831 (2012)

Polarization-insensitive self-collimation and beam splitter based on triangular-lattice annular photonic crystals

Liyong Jiang, Hong Wu, and Xiangyin Li
J. Opt. Soc. Am. B 30(5) 1248-1255 (2013)

Multifunctional beam steering via switchable negative refraction, self-collimation, and zero refraction effects in conventional and annular photonic crystals

Jing Yuan, Jing Shu, and Liyong Jiang
Opt. Express 28(4) 5367-5377 (2020)

Two-dimensional photonic crystals with large complete photonic band gaps in both TE and TM polarizations

Feng Wen, Sylvain David, Xavier Checoury, Moustafa El Kurdi, and Philippe Boucaud
Opt. Express 16(16) 12278-12289 (2008)