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56Research HighlightsMultimode/multicore fiber sys-tem for practical optical com-munication infrastructureWorld-record, 1.2Pb/s transmission through <0.2mm three-mode/four-core ber was demonstratedCONNECTIn order to cope with ever-in-creasing communication traf-fic, research on large-scale optical transmission using new types of optical fibers that allow exceeding the limit of conventional optical fibers and their application are actively con-ducted all over the world. The main new types of optical fibers studied are multicore fibers, in which multiple pas-sages (cores) are arranged in an opti-cal fiber, and multimode fibers that support multiple propagation modes in a single core with a larger core diame-ter. Ultimate throughputs of several Fig. : "VoiceTra" translates your spoken words into dierent languages.Launching the appCheck the translation resultsReverse TranslationCheck the translation resultsin your own language!TranslationInput