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Photon Efficient Optical Time Transfer

Published

Author(s)

Emily Caldwell, Laura Sinclair, William C. Swann, Nathan R. Newbury, Benjamin Stuhl, Jean-Daniel Deschenes

Abstract

We present a novel frequency comb-based system for optical two-way time-frequency transfer to support very long distance free-space links between clocks. Our Photon-Efficient Agile Comb Optical Clock Synchronization (PEACOCS) system supports sub-femtosecond oscillator synchronization with up to 90 dB of link loss equating to few picowatt levels of received power. Such low power operation is a promising step towards terrestrial links in the 100s of kilometers as well as ground-to-satellite links.
Proceedings Title
2022 Joint conference of the European Frequency and Time Forum & the IEEE International Frequency Control Symposium
Conference Dates
April 24-28, 2022
Conference Location
Paris, FR

Keywords

two-way time transer, optical free-space links

Citation

Caldwell, E. , Sinclair, L. , Swann, W. , Newbury, N. , Stuhl, B. and Deschenes, J. (2022), Photon Efficient Optical Time Transfer, 2022 Joint conference of the European Frequency and Time Forum & the IEEE International Frequency Control Symposium, Paris, FR, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933903 (Accessed May 31, 2023)
Created April 24, 2022, Updated March 20, 2023