Phys.org August 21, 2024
Existing optical switching solutions are inadequate for addressing flexible information exchange among the mode channels. Researchers in China introduced a flexible mode switching system in a multimode fibre based on an optical neural network chip. The system utilized the flexibility of on-chip optical neural networks along with an all-fibre orbital angular momentum (OAM) mode multiplexer-demultiplexer to achieve mode switching among the three OAM modes within a multimode fibre. They validated the system by successfully transmitting different modulation formats across various modes. According to the researchers their system could provide effective optical switching in practical multimode communication networks… read more. Open Access TECHNICAL ARTICLE
Working principle of the optical neural network chip for OAM mode switching. Credit: Zhengsen Ruan et al. Credit: Light: Advanced Manufacturing, Article number: 23, 12 July 2024