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Coherent Optical Phase Transfer over a 32-km Fiber with 1 s Instability at10−17
- Source :
- Physical Review Letters. 99
- Publication Year :
- 2007
- Publisher :
- American Physical Society (APS), 2007.
-
Abstract
- The phase coherence of an ultrastable optical frequency reference is fully maintained over actively stabilized fiber networks of lengths exceeding 30 km. For a 7-km link installed in an urban environment, the transfer instability is $6 \times 10^{-18}$ at 1-s. The excess phase noise of 0.15 rad, integrated from 8 mHz to 25 MHz, yields a total timing jitter of 0.085 fs. A 32-km link achieves similar performance. Using frequency combs at each end of the coherent-transfer fiber link, a heterodyne beat between two independent ultrastable lasers, separated by 3.5 km and 163 THz, achieves a 1-Hz linewidth.<br />Comment: 4 pages, 4 figures
- Subjects :
- Physics
Atomic Physics (physics.atom-ph)
business.industry
Terahertz radiation
FOS: Physical sciences
General Physics and Astronomy
Beat (acoustics)
Laser
Instability
Physics - Atomic Physics
law.invention
Laser linewidth
Optics
law
Phase noise
business
Physics - Optics
Optics (physics.optics)
Coherence (physics)
Jitter
Subjects
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 99
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....b37d1cc8629da25670df0f4afe649dcd