Abstract

For a one-dimensional (1D) periodic system with inherent mirror symmetry, the value of the geometric “Zak” phase in a bulk band is related to the sign of reflection phase for wavelengths inside the bandgaps sandwiching the bulk band. Here, we designed an interference setup which allows us to measure the reflection phase of 1D phonic crystal fabricated for the optical range; this, in turn, enabled us to determine the Zak phases of the bands. We then found interface states whose existence can be traced to the topological properties of the bandgaps and the geometric phases of the bulk bands.

© 2015 Optical Society of America

Controlling interface states in 1D photonic crystals by tuning bulk geometric phases

Wensheng Gao, Meng Xiao, Baojie Chen, Edwin Y. B. Pun, C. T. Chan, and Wing Yim Tam
Opt. Lett. 42(8) 1500-1503 (2017)

Zak phase induced multiband waveguide by two-dimensional photonic crystals

Yuting Yang, Tao Xu, Yun Fei Xu, and Zhi Hong Hang
Opt. Lett. 42(16) 3085-3088 (2017)

Zak phase of photons in optical waveguide lattices

Stefano Longhi
Opt. Lett. 38(19) 3716-3719 (2013)

Zak phase and topological plasmonic Tamm states in one-dimensional plasmonic crystals

Lei Wang, Wei Cai, Mengli Bie, Xinzheng Zhang, and Jingjun Xu
Opt. Express 26(22) 28963-28975 (2018)

Tamm-plasmon polaritons in one-dimensional photonic quasi-crystals

Mukesh Kumar Shukla and Ritwick Das
Opt. Lett. 43(3) 362-365 (2018)