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A 500 km optical fiber link with six remotely controlled optical amplifiers for frequency comparison between MPQ and PTB

Predehl, Alnis, Hänsch +3 more

Conference on Lasers and Electro-OpticsJan 1, 20100 citations

High-resolution microwave frequency dissemination on an 86-km urban optical link

Olivier Lopez, Anne Amy‐Klein, M. Lours +2 more

arXiv:0907.3500Applied Physics BNov 20, 2009172 citations

Ultra Precise Frequency Dissemination across Germany – Towards a 900 km Optical Fiber Link from PTB to MPQ

Katharina Predehl, Ronald Holzwarth, Thomas Udem +5 more

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text K. Predehl, R. Holzwarth, T. Udem, T. Hänsch, O. Terra, G. Grosche, B. Lipphardt, and H. Schnatz, "Ultra Precise Frequency Dissemination across Germany – Towards a 900 km Optical Fiber Link from PTB to MPQ," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optica Publishing Group, 2009), paper CTuS2. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save articleGet PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text K. Predehl, R. Holzwarth, T. Udem, T. Hänsch, O. Terra, G. Grosche, B. Lipphardt, and H. Schnatz, "Ultra Precise Frequency Dissemination across Germany – Towards a 900 km Optical Fiber Link from PTB to MPQ," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optica Publishing Group, 2009), paper CTuS2. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article

Conference on Lasers and Electro-OpticsJan 1, 20091 citation

Phase-coherent frequency comparison of optical clocks using a telecommunication fiber link

H. Schnatz, Osama Terra, Katharina Predehl +16 more

We have explored the performance of 2 "dark fibers" of a commercial telecommunication fiber link for a remote comparison of optical clocks. These fibers establish a network in Germany that will eventually link optical frequency standards at PTB with those at the Institute of Quantum Optics (IQ) at the Leibniz University of Hanover, and the Max Planck Institutes in Erlangen (MPL) and Garching (MPQ). We demonstrate for the first time that within several minutes a phase coherent comparison of clock lasers at the few 10(-15) level can also be accomplished when the lasers are more than 100 km apart. Based on the performance of the fiber link to the IQ, we estimate the expected stability for the link from PTB to MPQ via MPL that bridges a distance of approximately 900 km.We have explored the performance of 2 "dark fibers" of a commercial telecommunication fiber link for a remote comparison of optical clocks. These fibers establish a network in Germany that will eventually link optical frequency standards at PTB with those at the Institute of Quantum Optics (IQ) at the Leibniz University of Hanover, and the Max Planck Institutes in Erlangen (MPL) and Garching (MPQ). We demonstrate for the first time that within several minutes a phase coherent comparison of clock lasers at the few 10(-15) level can also be accomplished when the lasers are more than 100 km apart. Based on the performance of the fiber link to the IQ, we estimate the expected stability for the link from PTB to MPQ via MPL that bridges a distance of approximately 900 km.

IEEE Transactions on Ultrasonics Ferroelectrics and Frequency ControlJan 1, 201019 citations

Optical frequency transfer via 920 km fiber link with 10 −19 relative accuracy

Predehl, Alnis, Hänsch +6 more

Conference on Lasers and Electro-OpticsJan 1, 20120 citations

Phase-coherent frequency comparison of optical clocks using a telecommunication fiber link

H. Schnatz, Osama Terra, Katharina Predehl +16 more

We have explored the performance of two ldquodark fibersrdquo of a commercial telecommunication fiber link for a remote comparison of optical clocks. These fibers establish a network in Germany that will eventually link optical frequency standards at PTB with those at the Institute of Quantum Optics (IQ) at the Leibniz University of Hanover, and the Max Planck Institutes in Erlangen (MPL) and Garching (MPQ). We demonstrate for the first time that within several minutes a phase coherent comparison of clock lasers at the few 10-15level can also be accomplished when the lasers are more than 100 km apart. Based on the performance of the fiber link to the IQ we estimate the expected stability for the link from PTB to MPQ via MPL that bridges a distance of approximately 900 km.We have explored the performance of two ldquodark fibersrdquo of a commercial telecommunication fiber link for a remote comparison of optical clocks. These fibers establish a network in Germany that will eventually link optical frequency standards at PTB with those at the Institute of Quantum Optics (IQ) at the Leibniz University of Hanover, and the Max Planck Institutes in Erlangen (MPL) and Garching (MPQ). We demonstrate for the first time that within several minutes a phase coherent comparison of clock lasers at the few 10-15level can also be accomplished when the lasers are more than 100 km apart. Based on the performance of the fiber link to the IQ we estimate the expected stability for the link from PTB to MPQ via MPL that bridges a distance of approximately 900 km.

Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS)Apr 1, 20099 citations

Ultra precise frequency dissemination across Germany - Towards a 900 km optical fiber link from PTB to MPQ

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Ultra precise frequency dissemination across Germany - Towards a 900 km optical fiber link from PTB to MPQ

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