Optical delays

Slower for longer

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Coupled optical microresonators are one way of slowing down light. A new record has now been set for the length of these slow-light waveguides using an array of more than 100 photonic-crystal cavities.

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Figure 1: Schematic of a short (ten resonators) PC CROW.

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De La Rue, R. Slower for longer. Nature Photon 2, 715–716 (2008) doi:10.1038/nphoton.2008.238

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