Four-mode parallel silicon multimode waveguide crossing scheme based on the asymmetric directional couplers

• Published in: Optics express Vol. 30; no. 13; p. 22442
• Main Authors: Zhang, Runsen, Sun, Shangsen, Zhang, Fengchun, Chen, Kaixuan, Liu, Liu, Zhu, Ning
• Format: Journal Article
• Language: English
• Published: 20.06.2022

We theoretically propose and experimentally demonstrate a novel ultra-compact four-mode silicon waveguide crossing device based on the asymmetric directional couplers for densely integrated on-chip mode division multiplexing systems. The crossing is based on the parallel crossing scheme where the tw...