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@INPROCEEDINGS{Shafak:632193,
      author       = {Shafak, Kemal and Dai, Anan and Cano Vargas, Erwin and
                      Hagemann, Michael and Kärtner, Franz},
      title        = {{O}ptical-to-microwave clock synchronization with
                      few-femtosecond residual timing jitter for space ground
                      segments},
      journal      = {Proceedings of SPIE},
      volume       = {13100},
      issn         = {0038-7355},
      address      = {Bellingham, Wash.},
      publisher    = {SPIE},
      reportid     = {PUBDB-2025-02121},
      pages        = {131002k},
      year         = {2024},
      comment      = {Advances in Optical and Mechanical Technologies for
                      Telescopes and Instrumentation VI : [Proceedings] - SPIE,
                      2024. - ISBN 97815106752309781510675247 -
                      doi:10.1117/12.3019657},
      booktitle     = {Advances in Optical and Mechanical
                       Technologies for Telescopes and
                       Instrumentation VI : [Proceedings] -
                       SPIE, 2024. - ISBN
                       97815106752309781510675247 -
                       doi:10.1117/12.3019657},
      abstract     = {High-precision timing is vital in space communication for
                      tasks like navigation, data transfer, and coordinating
                      satellite constellations. Currently, ground segments rely on
                      microwave clocks, but emerging optical clocks and links
                      offer great improvements in resolution, precision, and
                      stability for next generation systems. However, integrating
                      optical clocks with conventional microwave sources presents
                      a challenge. Our solution, an optical-to-microwave phase
                      detector, addresses this by enabling synchronization with
                      few-femtosecond residual jitter between an optical- and a
                      microwave source. With a phase/timing resolution of 0.01 fs
                      RMS and a noise-floor below 1 fs RMS, this detector becomes
                      a key technology as optical clock adoption grows in ground
                      segments.},
      month         = {Jun},
      date          = {2024-06-16},
      organization  = {Advances in Optical and Mechanical
                       Technologies for Telescopes and
                       Instrumentation VI, Yokohama (Japan),
                       16 Jun 2024 - 22 Jun 2024},
      cin          = {CFEL-UFOX},
      ddc          = {620},
      cid          = {I:(DE-H253)CFEL-UFOX-20160927},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631)},
      pid          = {G:(DE-HGF)POF4-631},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16 / PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      doi          = {10.1117/12.3019657},
      url          = {https://bib-pubdb1.desy.de/record/632193},
}