Stabilized microwave-frequency transfer using optical phase sensing and actuation

Abstract

We present a stabilized microwave-frequency transfer technique that is based on optical phase-sensing and optical phase-actuation. This technique shares several attributes with optical-frequency transfer and therefore exhibits several advantages over other microwave-frequency transfer techniques. We demonstrated stabilized transfer of an 8,000 MHz microwave-frequency signal over a 166 km metropolitan optical fiber network, achieving a fractional frequency stability of 6.8x10^-14 Hz/Hz at 1 s integration, and 5.0x10^-16 Hz/Hz at 1.6x10^4 s. This technique is being considered for use on the Square Kilometre Array SKA1-mid radio telescope.

4 pages, accepted by Optics Letters

References in corpus (2)

• A clock network for geodesy and fundamental science
• Photonic microwave signals with zeptosecond level absolute timing noise

Cited by in corpus (7)

• Optically synchronized fiber links with spectrally pure integrated lasers
• Stabilized free-space optical frequency transfer
• The Mid-Frequency Square Kilometre Array Phase Synchronisation System
• Astronomical verification of a stabilized frequency reference transfer system for the Square Kilometre Array
• Simple Stabilized Radio-Frequency Transfer with Optical Phase Actuation
• Open-Loop Polarization Mode Dispersion Mitigation for Fibre-Optic Time and Frequency Transfer
• Phase synchronisation system receiver module for the Mid-Frequency Square Kilometre Array