Optical time-frequency transfer across a free-space, three-node network

Optical time-frequency transfer across a free-space, three-node network

We demonstrate frequency-comb-based optical two-way time-frequency transfer across a three-node clock network. A fielded, bidirectional relay node connects laboratory-based master and end nodes, allowing the network to span 28 km of turbulent outdoor air while keeping optical transmit powers below 5...

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Veröffentlicht in:APL photonics 2020-07, Vol.5 (7), p.076113-076113-8
Hauptverfasser: Bodine, Martha I., Ellis, Jennifer L., Swann, William C., Stevenson, Sarah A., Deschênes, Jean-Daniel, Hannah, Emily D., Manurkar, Paritosh, Newbury, Nathan R., Sinclair, Laura C.
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container_end_page 076113-8
container_issue 7
container_start_page 076113
container_title APL photonics
container_volume 5
creator Bodine, Martha I.
Ellis, Jennifer L.
Swann, William C.
Stevenson, Sarah A.
Deschênes, Jean-Daniel
Hannah, Emily D.
Manurkar, Paritosh
Newbury, Nathan R.
Sinclair, Laura C.
description We demonstrate frequency-comb-based optical two-way time-frequency transfer across a three-node clock network. A fielded, bidirectional relay node connects laboratory-based master and end nodes, allowing the network to span 28 km of turbulent outdoor air while keeping optical transmit powers below 5 mW. Despite the comparatively high instability of the free-running local oscillator at the relay node, the network transfers frequency with fractional precision below 10−18 at averaging times above 200 s and transfers time with a time deviation below 1 fs at averaging times between 1 s and 1 h. The successful operation of this network represents a promising step toward the operation of future free-space networks of optical atomic clocks.
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title Optical time-frequency transfer across a free-space, three-node network
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