Stable radio frequency transfer over fiber based on microwave photonic phase shifter
- 16 December 2019
- journal article
- research article
- Published by Optica Publishing Group in Optics Express
- Vol. 27 (26), 38109-38115
- https://doi.org/10.1364/oe.27.038109
Abstract
We demonstrate a radio frequency (RF) phase-stable transmission over fiber based on microwave photonic phase shifter. In the proposed system, both assistant RF signals are applied to drive two arms of a dual-drive Mach-Zehnder modulator (DMZM), respectively. An optical bandpass filter is followed to filter out the first-order sideband of optical modulated signal. Due to the phase independence between two optical sidebands, the phase perturbation caused by fiber-length variations can be compensated automatically via controlling the direct-current bias voltage of the DMZM. We have performed RF transfer in a 155 km single-mode fiber with a frequency instability of 3.05 × 10−17 at 10,000 s averaging time.Keywords
Funding Information
- National Natural Science Foundation of China (61427813, 61531003, 61690195, 61701040)
- BUPT Action Project for Promoting the Development of Scientific and Technological Innovation (2019XD-A18)
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