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Optical communications

Spectral translation unlocks 2-μm window

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The use of on-chip nonlinear waveguides that can convert 1.5-μm wavelength signals into the 2-μm region brings new opportunities for expanding the bandwidth of optical communications.

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Fig. 1: Principle of spectral translation by degenerate four-wave mixing (FWM) in an AlGaAsOI nanowaveguide.

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  1. Tyndall National Institute, University College Cork, Cork, Ireland

    Fatima Gunning & Brian Corbett

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  1. Fatima Gunning
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  2. Brian Corbett
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Correspondence to Fatima Gunning.

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Gunning, F., Corbett, B. Spectral translation unlocks 2-μm window. Nat. Photon. 16, 744–745 (2022). https://doi.org/10.1038/s41566-022-01090-z

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