Orbital angular momentum (OAM) modes in fibres are modes that potentially can be used for mode-division multiplexing systems. OAM modes possess a helical phase front which can be written as exp(iLφ), with L being the topological charge and φ being the azimuthal coordinate. Here, we present a chip capable of multiplexing waveguide modes to OAM modes in a fibre in the C-band.

© 2019 IEEE

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