@inproceedings{ea94858c6d424d4d83e91d50c0e063e2,
title = "Long-distance transfer and stability analysis of frequency-comb-rooted terahertz waves for 6G and beyond",
abstract = "This study introduces a highly-stable terahertz wave generation at remote sites by transferring comb-rooted optical waves over long distances. Two optical frequencies are extracted from an optical-frequency-comb and then transferred through optical links (including long-distance optical fibers and free-space optical (FSO) links). These transmitted optical waves are then down-converted into terahertz waves using a photomixer, and their stability is evaluated by comparing the resulting beat signal with a reference terahertz wave. We also investigate and quantify the noise sources introduced during the optical wave transmission—such as phase distortion, amplitude fluctuations, and nonlinear effects—that can degrade the stability of the generated terahertz waves. This analysis aims to contribute to the advancement of the terahertz industry by establishing a foundation for next-generation 6G communication systems and facilitating the dissemination of terahertz standards to remote locations.",
keywords = "Free-space optical link, Optical fiber, Optical transfer, Optical-frequency-comb, Terahertz wave generation",
author = "Jaeyoon Kim and Guseon Kang and Joohyung Lee and Kim, \{Seung Woo\} and Kim, \{Young Jin\}",
note = "Publisher Copyright: {\textcopyright} 2025 SPIE.; Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVIII 2025 ; Conference date: 27-01-2025 Through 30-01-2025",
year = "2025",
doi = "10.1117/12.3041687",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Sadwick, \{Laurence P.\} and Tianxin Yang",
booktitle = "Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVIII",
}