Long-distance frequency dissemination with a resolution of 10(-17).
We use a new technique to disseminate microwave reference signals along ordinary optical fiber. The fractional frequency resolution of a link of 86 km in length is 10(-17) for a one day integration time, a resolution higher than the stability of the best microwave or optical clocks. We use the link to compare the microwave reference and a CO2/OsO4 frequency standard that stabilizes a femtosecond laser frequency comb. This demonstrates a resolution of 3 x 10(-14) at 1 s. An upper value of the instability introduced by the femtosecond laser-based synthesizer is estimated as 1 x 10(-14) at 1 s.
Daussy
C
C
LPL, Laboratoire de Physique des Lasers, UMR 7538 C.N.R.S., Université Paris 13, 99, avenue J.-B. Clément, 93430 Villetaneuse, France.
Lopez
O
O
Amy-Klein
A
A
Goncharov
A
A
Guinet
M
M
Chardonnet
C
C
Narbonneau
F
F
Lours
M
M
Chambon
D
D
Bize
S
S
Clairon
A
A
Santarelli
G
G
Tobar
M E
ME
Luiten
A N
AN