OTFN white paper - https://www.geant.org/Resources/Documents/GN4-3_White-Paper_Time_and_Frequency.pdf

This presentation aims to overview why there is a such a worldwide enthusiasm for new optical Time and Frequency services. Dr Harald Schnatz (PTB) will present the historical background of these new services and why they could be so usefull in scientific, societal and economic domains.

While the number of potential T/F end-users keeps growing, several techniques have been deployed (optical carrier techniques using different wavelength, modulation techniques, unidirectional, bidirectional...) Jani Myyry will give us an overview of the existing techniques and help us understand the main differences (advantages and drawbacks) in different scenarios.

Interferometry is a technique in radio astronomy where the signals of multiple radio telescopes are combined, creating a single virtual telescope with a much improved resolution. This requires the transport of large amounts of data, and the distribution of a very stable reference frequency and timing signal to each of the receptors. In this presentation I will highlight several examples and...