Open AccessPhase fluctuation compensation for long-term transfer of stable radio frequency over fiber link
Author(s) -
Bo Ning,
Peng Du,
Dong Hou,
Jianye Zhao
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.028447
Subject(s) - optics , jitter , transmitter , materials science , optical fiber , compensation (psychology) , fiber laser , phase noise , phase (matter) , time transfer , fiber , modulation (music) , physics , telecommunications , computer science , acoustics , psychology , channel (broadcasting) , quantum mechanics , global positioning system , psychoanalysis , composite material
We developed a new radio frequency dissemination system based on an optical fiber link. A 1.55 μm mode-locked fiber laser was used as optical transmitter in the system. To actively reduce the phase fluctuation induced by the fiber length variations with high resolution, we proposed a novel compensation technique. In our technique, we directly control the phase of optical pulses generated by the laser to compensate the fluctuation. The phase-controlling method is based on both pump power modulation and cavity length adjusting. We performed the transfer in a 22-km outdoor fiber link, with a transfer stability of 3.7 × 10(-14) at 1 s and 6.6 × 10(-18) at 16000 s. The integrated timing jitter in 24 hours was reduced from 14 ps to 35 fs.