Abstract
We study, to the best of our knowledge, the first observations of light propagation in synthetic photonic lattice with anti-parity-time symmetry by tuning the gain or loss of two coupled fiber rings alternatively and corresponding phase distribution periodically. By tuning the phase $\varphi$ and the wave number $Q$ in the lattice, asymmetric transmission of the light field can be achieved for both long and short loops when $\varphi \ne n\pi /2$ ($n$ is an integer). Further investigations demonstrate that asymmetric localization of the light field in the long loop and symmetric diffraction-free transmission in two loops can both be realized by changing these two parameters. Our work provides a new method to obtain anti-parity-time symmetry in synthetic photonic lattice and paves a broad way to achieve novel optical manipulation in photonic devices.
© 2020 Optical Society of America
Full Article | PDF ArticleMore Like This
Qingsong Yu, Jiaqi Yuan, Zhenzhi Liu, Ruidong He, Shun Liang, Yanpeng Zhang, and Zhaoyang Zhang
Opt. Lett. 48(21) 5735-5738 (2023)
Kaiwen Ji, Zengrun Wen, Zhenjuan Liu, Yanan Dai, Kun Han, Pingan Gao, Aihua Gao, Jintao Bai, Guoquan Zhang, and Xinyuan Qi
Opt. Lett. 43(18) 4457-4460 (2018)
Chao Hang, Yaroslav V. Kartashov, Guoxiang Huang, and Vladimir V. Konotop
Opt. Lett. 40(12) 2758-2761 (2015)