Abstract
In space-division-multiplexed transmission systems, it is essential to realize fan-in/fan-out devices that connect the cores between multicore fibers and single-mode fibers. In this Letter, we propose a metasurface-based fan-in/fan-out device with nonuniform phase plates for heterogeneous 19-core fibers across the full C band. Our results show that an average insertion loss of 0.85 dB and a maximum crosstalk of −25.5 dB can be achieved at 1550 nm. Across the C band, the insertion loss and crosstalk are better than 2.78 dB and −19.96 dB, respectively. The proposed concept can flexibly handle various fiber configurations without additional complexity.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Postgraduate Research Program of Tianjin
Subject
Atomic and Molecular Physics, and Optics