Remote transfer of a high-stability and ultralow-jitter timing signal.

@article{Holman2005RemoteTO,
  title={Remote transfer of a high-stability and ultralow-jitter timing signal.},
  author={Kevin W. Holman and Darren D. Hudson and Jun Ye and David J. Jones},
  journal={Optics letters},
  year={2005},
  volume={30 10},
  pages={
          1225-7
        }
}
Transfer of a high-stability and ultralow-jitter timing signal through a fiber network via a mode-locked fiber laser is demonstrated. With active cancellation of the fiber-transmission noise, the fractional instability for transfer of a radio-frequency signal through a 6.9- (4.5-) km round-trip installed (laboratory-based) fiber network is below 9(7) x 10(-15) tau(-1/2) for an averaging time tau > or = 1 s, limited by the noise floor of the frequency-counting system. The noise cancellation… 

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References

SHOWING 1-7 OF 7 REFERENCES
Precise frequency transfer through a fiber network by use of 1.5-microm mode-locked sources.
TLDR
It is noted that the pulsed mode of operation offers almost an order-of-magnitude improvement in stability at 1 s over that with a sinusoidal amplitude modulation on an optical carrier.
An Optical Clock Based on a Single Trapped 199Hg+ Ion
TLDR
An all-optical atomic clock referenced to the 1.064-petahertz transition of a single trapped199Hg+ ion is demonstrated and an upper limit for the fractional frequency instability of 7 × 10−15 is measured in 1 second of averaging—a value substantially better than that of the world's best microwave atomic clocks.
Molecular iodine clock.
TLDR
A simple optical clock based on an optical transition of iodine molecules, providing a frequency stability superior to most rf sources, is demonstrated and an rf clock signal of comparable stability over an extended period is derived.
Search for variations of fundamental constants using atomic fountain clocks.
TLDR
These measurements set a stringent upper bound to a possible fractional time variation of the ratio between the two frequencies: d/dt ln([(nu(Rb))/(nu(Cs))]=(0.2+/-7.0)x 10(-16) yr(-1) (1sigma uncertainty).
Some possibilities for laboratory searches for variations of fundamental constants
We consider different options for the search for possible variations of the fundamental constants. We give a brief overview of the results obtained with several methods. We discuss their advantages
Analysis of noise mechanisms limiting the frequency stability of microwave signals generated with a femtosecond laser
Excess phase noise is observed in the spectrum of the microwave signal extracted from a photodetector illuminated by a train of ultrashort light pulses from the femtosecond laser. This noise affects
Jitter spectral density (left axis) and singlesideband phase noise (right axis) for transfer of the 81st harmonic s7.84 GHzd of a laser repetition frequency through the BRAN
  • Phys. Rev. Lett
  • 2001