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Joint press release of the Max Planck Institute for the
Science of Light, Erlangen/Germany, (MPL) and the QUEST Institute of the
Physikalisch-Technische Bundesanstalt (PTB)
If you want to send light on a trip through optical fibres -
with as little loss as possible, you should opt for infrared light, as is the
case, for example, in the telecommunication networks worldwide. For certain
applications, such as spectroscopic investigations on ions or atoms, however,
(laser) light in the ultraviolet range is required.