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    Research on Four Core Fiber WDM Device Technology by CHEN Li, XIAO Qingming, WANG Min, JIANG Lei

    Published 2024-12-01
    “…WDM device based on space division multiplexing system has a wide application prospect in optical fiber communication system.…”
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    Sport-related concussion in Brazilian professional soccer: A four-year prospective epidemiological analysis by Guilherme Corrêa de Araújo Moury Fernandes, Ewerton Borges de Souza Lima, Paulo Henrique Schmidt Lara, Ana Camila de Castro Gandolfi, Jorge Roberto Pagura, Gustavo Gonçalves Arliani, Moisés Cohen

    Published 2025-05-01
    “…This study aimed to investigate the incidence and other significant features of craniomaxillofacial trauma (CMFT), particularly Sport-Related Concussion (SRC), among professional soccer players from two major leagues in Brazil. This is a prospective epidemiological study which assessed two divisions of the national championship and large regional one over four seasons. …”
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    Weakly-coupled real-time SDM technology for short-reach optical transmission by Yuyang GAO, Juhao LI, Yongqi HE, Zhangyuan CHEN

    Published 2022-07-01
    “…The capacity upgrade of short-reach optical fiber transmission has received more and more attention.Spatial division multiplexing provides two new dimensions of fiber core and mode, which can greatly increase the transmission capacity of a single fiber.However, the crosstalk between spatial channels severely limits the practical application of space division multiplexing technology.To address the problem, a weakly-coupled space-division multiplexing fiber was firstly designed, in which perturbed rings were introduced in the core to increase the effective refractive index difference between LP modes.Secondly, an all-fiber mode multiplexer/demultiplexer that could handle non-circularly symmetric degenerate LP modes was proposed, as well as a low insertion loss and low crosstalk fan-in and fan-out devices.Based on the proposed fiber and devices, the low-cost intensity modulation and direct detection were used to implement the short-reach weakly-coupled mode-division-multiplexing and multi-core and few-mode real-time transmission.Finally, the prospective of space-division multiplexing real-time optical transmission technology was discussed.…”
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