Flexible orbital angular momentum mode switching in multimode fibre using an optical neural network chip
作者机构：Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhan 430074HubeiChina Optics Valley LaboratoryWuhan 430074HubeiChina
出 版 物：《Light(Advanced Manufacturing)》 (光（先进制造）（英文）)
年 卷 期：2024年第5卷第3期
页 面：16-27页
学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学]
基 金：supported by the National Natural Science Foundation of China(NSFC)(62125503,62261160388) Natural Science Foundation of Hubei Province of China(2023AFA028) Key R&D Program of Hubei Province of China(2020BAB001,2021BAA024) Innovation Project of Optics Valley Laboratory(OVL2021BG004)
主 题：Orbital angular momentum Mode switching Fibre-chip-fibre Mode-division multiplexing Optical neural network chip Silicon photonics
摘 要：Mode-division multiplexing technology has been proposed as a crucial technique for enhancing communication capacity and alleviating growing communication *** switching,which is an essential component of optical communication systems,enables information exchange between ***,existing optical switching solutions are inadequate for addressing flexible information exchange among the mode *** this study,we introduced a flexible mode switching system in a multimode fibre based on an optical neural network *** system utilised 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 *** system adopted an improved gradient descent algorithm to achieve training for arbitrary 3×3 exchange matrices and ensured maximum crosstalk of less than-18.7 dB,thus enabling arbitrary inter-mode channel information *** proposed optical-neural-network-based mode-switching system was experimentally validated by successfully transmitting different modulation formats across various *** innovative solution holds promise for providing effective optical switching in practical multimode communication networks.
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