Fiber Link Stabilization with a Multicore Fiber Amplifier
Optics
2026-02-26 v1
Abstract
We study the use of separate cores of a multicore erbium-doped fiber amplifier (MC-EDFA) in a noise-canceled link for ultrastable optical frequency transfer. We demonstrate fractional frequency instability of at 1000 s averaging time for the stabilized MC-EDFA alone and at 1000 s averaging time when integrated with a 40 km-long 7-core spooled fiber. This study further establishes multicore fiber (MCF) networks as a promising platform for ultrastable frequency transfer, serving as an important step toward incorporating precision time and frequency distribution into future MCF communication infrastructures.
Keywords
Cite
@article{arxiv.2602.21373,
title = {Fiber Link Stabilization with a Multicore Fiber Amplifier},
author = {Yifan Liu and Takuma Nakamura and Daniel J. Elson and Yuta Wakayama and Charles A. McLemore and Tetsuya Hayashi and Mikael Mazur and Nicolas Fontaine and Franklyn Quinlan and Nazanin Hoghooghi},
journal= {arXiv preprint arXiv:2602.21373},
year = {2026}
}