All-digital radio-frequency signal distribution via optical fibers
Date
2012
Authors
Hsu, Magnus
He, Yabai
Shaddock, Daniel
Warrington, Richard B
Gray, Malcolm B
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Volume Title
Publisher
Institute of Electrical and Electronics Engineers (IEEE Inc)
Abstract
We present a radio-frequency (RF) signal distribution system via optical fibers. We utilize an all-digital platform that encompasses a phase-locked loop, numerically-controlled oscillator, and fiber phase noise cancellation system. Our system achieves a fractional frequency transfer stability of 4×10-13 at 1 s and 6 × 10-17 at one day for the distribution of RF signals over 70 km of optical fiber. We demonstrate that this performance can be achieved with standard crystal oscillators. Our system is scalable, configurable, and flexible, allowing distribution of signals at different frequencies while maintaining over two orders of magnitude of the fiber phase noise suppression.
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Keywords
Keywords: Different frequency; Fractional frequencies; Orders of magnitude; Phase noise cancellation; Phase noise suppression; Radiofrequency signals; RF signal; Crystal oscillators; Digital radio; Digital signal processing; Field programmable gate arrays (FPGA); P Digital signal processing (DSP); field programmable gate array (FPGA); optical fibers; phasemeter; radio-frequency (RF) signal distribution
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Source
IEEE Photonics Technology Letters
Type
Journal article
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Restricted until
2037-12-31
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