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physics.optics2022★ 16 cited
Topological valley crystals in a photonic Su-Schrieffer-Heeger (SSH) variant
Z. Yu, H. Lin, R. Zhou +5
Progress on two-dimensional materials has shown that valleys, as energy extrema in a hexagonal first Brillouin zone, provides a new degree of freedom for information manipulation.…
physics.optics2021★ 1 cited
The third- and fourth-order orbital angular momentum multiplexed amplification with ultra-low differential mode gain
TianJin Wen, Shecheng Gao, Wei Li +6
In this Letter, a ring-core erbium-doped fiber (RC-EDF), with two-layer erbium-doped structure, supporting up to the fourth-order orbital angular momentum (OAM) mode is designed an…