All-digital radio-frequency signal distribution via optical fibers

Date

2012

Authors

Hsu, Magnus
He, Yabai
Shaddock, Daniel
Warrington, Richard B
Gray, Malcolm B

Journal Title

Journal ISSN

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.

Description

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

Citation

Source

IEEE Photonics Technology Letters

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1109/LPT.2012.2193389

Restricted until

2037-12-31