Elumalai, Jayaprasath;
Salih, Mohammed;
Fice, Martyn;
Brown, Adam;
Li, Lianhe;
Linfield, Edmund H;
Valavanis, Alexander;
... Freeman, Joshua R; + view all
(2025)
Free-Space Optical Communications using Terahertz Lasers at Gbit/s Data Rates.
In:
2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
(pp. p. 1).
IEEE: Munich, Germany.
Preview |
Text
cee2025_paper.pdf - Accepted Version Download (970kB) | Preview |
Abstract
High-speed free-space optical (FSO) communication in the terahertz (THz) spectrum is gaining attention as a solution to the rising demand for wireless data. THz frequencies (0.1-10 THz) offer ample bandwidth and can deliver fiber-equivalent data rates wirelessly, making them suitable for beyond-5G backhaul [1]. Terahertz quantum cascade lasers (THz QCLs) offer multi-gigabit modulation speed in FSO links. The THz FSO communication systems >1 THz remain largely unexplored due to limitations in source and photodetector limitations. However, significant progress in sources, modulators, and receivers has improved output power, bandwidth, and sensitivity. [2]. A THz QCL link at 20 Mbit/s was demonstrated [3], and a recent link achieved 1 Mbit/s with a room-temperature graphene receiver [4]. However, achieving higher data rates in a THz FSO communication link remains a significant goal.
| Type: | Proceedings paper |
|---|---|
| Title: | Free-Space Optical Communications using Terahertz Lasers at Gbit/s Data Rates |
| Event: | 2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) |
| Dates: | 23 Jun 2025 - 27 Jun 2025 |
| ISBN-13: | 979-8-3315-1252-1 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/CLEO/EUROPE-EQEC65582.2025.11109841 |
| Publisher version: | https://doi.org/10.1109/cleo/europe-eqec65582.2025... |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Wireless communication; Wireless sensor networks; Free-space optical communication; Sensitivity; Receivers; Bandwidth; Photodetectors; Quantum cascade lasers; Power generation; Terahertz communications |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10215383 |
Archive Staff Only
 |
View Item |
