Cascaded multiplexed optical link on a telecommunication network for frequency dissemination.
We demonstrate a cascaded optical link for ultrastable frequency dissemination comprised of two compensated links of 150 km and a repeater station. Each link includes 114 km of Internet fiber simultaneously carrying data traffic through a dense wavelength division multiplexing technology, and passes through two routing centers of the telecommunication network. The optical reference signal is inserted in and extracted from the communication network using bidirectional optical add-drop multiplexers. The repeater station operates autonomously ensuring noise compensation on the two links and the ultra-stable signal optical regeneration. The compensated link shows a fractional frequency instability of 3 x 10(-15) at one second measurement time and 5 x 10(-20) at 20 hours. This work paves the way to a wide dissemination of ultra-stable optical clock signals between distant laboratories via the Internet network.
Lopez
Olivier
O
Laboratoire de Physique des Lasers, Université Paris 13, CNRS, 99 Avenue Jean-Baptiste Clément, 93430 Villetaneuse, France.
Haboucha
Adil
A
Kéfélian
Fabien
F
Jiang
Haifeng
H
Chanteau
Bruno
B
Roncin
Vincent
V
Chardonnet
Christian
C
Amy-Klein
Anne
A
Santarelli
Giorgio
G
D003195:Computer Communication Networks / Q000295:instrumentation*; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D020407:Internet / Q000295:instrumentation*; D055100:Optical Fibers; D012815:Signal Processing, Computer-Assisted