We propose and fabricate all-fiber orbital angular momentum (OAM) functional devices for mode-division (de)multiplexing in conventional graded-index multimode fiber, based on which OAM±01, OAM±n and OAM±21 (de)multiplexing in OM3 fiber is successfully demonstrated in the experiment with favorable mode-crosstalk performance.

© 2019 The Author(s)

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