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Optical communications

Modulation at femtojoule scale

Photonic crystal nanocavities can strongly enhance the interaction between light and matter. Researchers have now demonstrated high-speed signal generation and all-optical switching with energies in the femtojoule and sub-femtojoule regime.

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Figure 1: The efficient nanocavity laser demonstrated by Matsuo et al. is based on a PC line-defect waveguide in an air-suspended InP membrane.

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Correspondence to Christian Koos.

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Koos, C., Leuthold, J. & Freude, W. Modulation at femtojoule scale. Nature Photon 4, 583–584 (2010). https://doi.org/10.1038/nphoton.2010.212

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