| Autor: |
Hamza Dely, Mahdieh Joharifar, Laureline Durupt, Armands Ostrovskis, Richard Schatz, Thomas Bonazzi, Gregory Maisons, Djamal Gacemi, Toms Salgals, Lu Zhang, Sandis Spolitis, Yan-Ting Sun, Vjačeslavs Bobrovs, Xianbin Yu, Isabelle Sagnes, Konstantinos Pantzas, Angela Vasanelli, Oskars Ozolins, Xiaodan Pang, Carlo Sirtori |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Nature Communications, Vol 15, Iss 1, Pp 1-11 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2041-1723 |
| DOI: |
10.1038/s41467-024-52053-7 |
| Popis: |
Abstract The large mid-infrared (MIR) spectral region, ranging from 2.5 µm to 25 µm, has remained under-exploited in the electromagnetic spectrum, primarily due to the absence of viable transceiver technologies. Notably, the 8–14 µm long-wave infrared (LWIR) atmospheric transmission window is particularly suitable for free-space optical (FSO) communication, owing to its combination of low atmospheric propagation loss and relatively high resilience to turbulence and other atmospheric disturbances. Here, we demonstrate a direct modulation and direct detection LWIR FSO communication system at 9.1 µm wavelength based on unipolar quantum optoelectronic devices with a unprecedented net bitrate exceeding 55 Gbit s−1. A directly modulated distributed feedback quantum cascade laser (DFB-QCL) with high modulation efficiency and improved RF-design was used as a transmitter while two high speed detectors utilizing meta-materials to enhance their responsivity are employed as receivers; a quantum cascade detector (QCD) and a quantum-well infrared photodetector (QWIP). We investigate system tradeoffs and constraints, and indicate pathways forward for this technology beyond 100 Gbit s−1 communication. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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