Analog FM free-space optical communication based on a mid-infrared quantum cascade laser frequency comb
Authors: Corrias N.; Gabbrielli T.; De Natale P.; Consolino L.; Cappelli F.
Autors Affiliation: CNR-INO, Istituto Nazionale di Ottica, Largo Enrico Fermi 6 FI, Firenze, 50125, CNR-INO, Italy; LENS, European Laboratory for Non-Linear Spectroscopy, Via Nello Carrara 1 FI, Sesto Fiorentino, 50019, Italy
Abstract: Quantum cascade laser frequency combs are nowadays well-appreciated sources for infrared spectroscopy. Here their applicability for free-space optical communication is demonstrated. The spontaneously-generated intermodal beat note of the frequency comb is used as carrier for transferring the analog signal via frequency modulation. Exploiting the atmospheric transparency window at 4 mu m, an optical communication with a signal-to-noise ratio up to 65 dB is realized, with a modulation bandwidth of 300 kHz. The system tolerates a maximum optical attenuation exceeding 35 dB. The possibility of parallel transmission of an independent digital signal via amplitude modulation at 5 Mbit/s is also demonstrated. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Journal/Review: OPTICS EXPRESS
Volume: 30 (7) Pages from: 10217 to: 10228
More Information: Horizon 2020 Framework Programme, FET Flagship on Quantum Technologies, (820419 “Qombs Project”).KeyWords: modulated combs; spectroscopy; linewidth; operation; searchDOI: 10.1364/OE.443483Citations: 8data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-12-03References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here