Stable distribution of low jitter frequency standards over optical fiber networks

In this paper, the authors used the optical fiber as the transfer medium. In the first set of experiments, a microwave frequency standard was placed on the pulse repetition rate (comb spacing) of a mode-locked fiber laser. The authors then compared this method of encoding with simple modulation of a...

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Bibliographic Details
Main Authors: Jones, D.J., Holman, K.W., Hudson, D., Jun Ye
Format: Conference Proceeding
Language:English
Subjects:
Fiber lasers
Frequency
Jitter
Laser mode locking
Masers
Optical fiber networks
Optical pulses
Photodetectors
Pulse modulation
Signal to noise ratio
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Summary:In this paper, the authors used the optical fiber as the transfer medium. In the first set of experiments, a microwave frequency standard was placed on the pulse repetition rate (comb spacing) of a mode-locked fiber laser. The authors then compared this method of encoding with simple modulation of a continuous wave laser and have found a marked improvement with the pulsed case. This improvement is due to reduction in the average power on the photodetectors necessary for a given SNR of the detected RF harmonic. By proper dispersion control, the shortest pulse can be delivered to the photodetector which in turn produces the highest SNR with the lowest average power. This result is now limited by the noise floor of the microwave measurement system.
ISSN:1099-4742
2376-8614
DOI:10.1109/LEOSST.2005.1528034