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

被引：38

作者：

Bodine, Martha I. ^{[1
,2
]}

Ellis, Jennifer L. ^{[1
]}

Swann, William C. ^{[1
]}

Stevenson, Sarah A. ^{[2
]}

Deschenes, Jean-Daniel ^{[3
]}

Hannah, Emily D. ^{[2
]}

Manurkar, Paritosh ^{[1
,2
]}

Newbury, Nathan R. ^{[1
]}

Sinclair, Laura C. ^{[1
]}

机构：

[1] NIST, 325 Broadway, Boulder, CO 80305 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[3] Octosig Consulting, Quebec City, PQ G1V 0A6, Canada

来源：

APL PHOTONICS | 2020年 / 5卷 / 07期

关键词：

CLOCK; AIR;

D O I：

10.1063/5.0010704

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

引用

页数：8

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