Cited 1 times since 2018 (0.1 per year) source: EuropePMC Optics letters, Volume 43, Issue 11, 1 1 2018, Pages 2660-2663 Highly controlled Bloch wave propagation in surfaces with broken symmetry. Yilmaz D, Yeltik A, Kurt H
We propose and demonstrate reduced symmetry photonic surfaces providing highly controlled Bloch wave propagation. The backward and dual directional propagations have been observed in the proposed low-symmetric periodic structures without variation in the unit-cell filling factor. Frequency-domain analyses present group indices up to negative/positive -237/+96 as strong indicators of the observed directional controlled surface waves driven by the orientation angle in the range of 20°-90°. Further verification of the index-based propagation direction has been achieved through detailed time-domain analyses and microwave experiments. Smart management of the propagation direction in low-symmetric surfaces has great potential for next-generation photonic applications.
