Title :
Ultra-stable optical frequency transfer over an optical telecommunications network with live data traffic
Author :
Kefelian, F. ; Lopez, O. ; Jiang, H. ; Chardonnet, C. ; Santarelli, G. ; Amy-Klein, A.
Author_Institution :
Lab. de Phys. des Lasers, Univ. Paris 13, Villetaneuse, France
Abstract :
We present here a new approach consisting in using part of an optical telecommunications network carrying simultaneously data traffic. Our 108 km comprises 86 km of dedicated fibre and 22 km of fibre from the French national telecommunications network for technology, education and research (RENATER). The link is a loop with both ends located in Observatoire de Paris to characterize the link stability. The metrological reference frequency signal is provided by a sub-Hz cavity stabilized laser. It is transferred on ITU channel #44 while live Internet data are transferred between University Paris 13 and Aubervilliers RENATER node on ITU #34 with 10 Gbit/s technology. The interconnection between the dedicated fibres and the optical network is realized by using optical add-drop multiplexers (OADM). This allows bidirectional propagation of the metrological signal on the same fibre which is required to compensate the link-induced phase noise using the round trip system.
Keywords :
Internet; laser cavity resonators; laser stability; multiplexing equipment; optical fibre networks; optical interconnections; optical links; optical noise; telecommunication traffic; Aubervilliers RENATER; French national telecommunications network; ITU channel; Internet data traffic; Observatoire de Paris; University Paris; bit rate 10 Gbit/s; cavity stabilized laser; distance 22 km; distance 86 km; fibre interconnection; link-induced phase noise; optical add-drop multiplexer; optical link stability; optical telecommunication network; round trip system; ultra-stable optical frequency transfer; Educational technology; Fiber lasers; Frequency; Internet; Laser stability; Optical add-drop multiplexers; Optical fiber networks; Optical fibers; Optical interconnections; Telecommunication traffic;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5192528
