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Related Experiment Video

Updated: May 7, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Optical-frequency transfer over a single-span 1840 km fiber link.

S Droste1, F Ozimek, Th Udem

  • 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany.

Physical Review Letters
|October 1, 2013
PubMed
Summary

Highly stable optical signals were transferred over 1840 km using an underground fiber link. This demonstrates a new method for precise frequency transfer critical for advanced optical frequency standards.

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Area of Science:

  • Physics
  • Metrology
  • Optical Engineering

Background:

  • Advancements in optical frequency standards necessitate precise long-distance signal transfer.
  • Existing methods face challenges in maintaining signal stability over continental scales.

Purpose of the Study:

  • To demonstrate the feasibility of optical-frequency transfer over a 1840-km underground fiber link.
  • To evaluate the stability and accuracy of the transferred optical signal.

Main Methods:

  • Utilized a single-span stabilization technique for optical-frequency transfer.
  • Employed an 1840-km underground optical fiber link to minimize environmental noise.
  • Measured frequency instabilities using the modified Allan deviation.

Main Results:

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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

Related Experiment Videos

Last Updated: May 7, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
09:03

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

  • Achieved short-term instabilities of 2×10(-15) at 1 s gate time, improving to 4×10(-19) at 100 s.
  • Found no systematic frequency offset within a statistical uncertainty of 3×10(-19).
  • Observed a τ(-2) slope in modified Allan deviation, consistent with theoretical predictions for fiber link noise.

Conclusions:

  • The demonstrated method enables highly stable optical-frequency transfer over continental distances.
  • Underground fiber links offer a low-noise environment suitable for precise metrology.
  • This technique supports the development and comparison of next-generation optical frequency standards.