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High bitrate data transmission in the 8-14 µm atmospheric window using an external Stark-effect modulator with digital equalization
CNRS, France.
KTH Royal Institute of Technology, Sweden.
RISE Research Institutes of Sweden, Digitala system, Industriella system. KTH Royal Institute of Technology, Sweden.ORCID-id: 0000-0003-4906-1704
CNRS, France.
Vise andre og tillknytning
2023 (engelsk)Inngår i: Optics Express, E-ISSN 1094-4087, Vol. 31, nr 5, s. 7259-7264Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

High bitrate mid-infrared links using simple (NRZ) and multi-level (PAM-4) data coding schemes have been realized in the 8 µm to 14 µm atmospheric transparency window. The free space optics system is composed of unipolar quantum optoelectronic devices, namely a continuous wave quantum cascade laser, an external Stark-effect modulator and a quantum cascade detector, all operating at room-temperature. Pre- and post-processing are implemented to get enhanced bitrates, especially for PAM-4 where inter-symbol interference and noise are particularly detrimental to symbol demodulation. By exploiting these equalization procedures, our system, with a full frequency cutoff of 2 GHz, has reached transmission bitrates of 12 Gbit/s NRZ and 11 Gbit/s PAM-4 fulfilling the 6.25 % overhead hard-decision forward error correction threshold, limited only by the low signal-to-noise ratio of our detector. 

sted, utgiver, år, opplag, sider
Optica Publishing Group (formerly OSA) , 2023. Vol. 31, nr 5, s. 7259-7264
Emneord [en]
Cutoff frequency, Equalizers, Error correction, Optoelectronic devices, Pulse amplitude modulation, Quantum cascade lasers, Stark effect, Atmospheric window, Bit rates, Data coding schemes, Data-transmission, Digital equalization, Infrared links, Midinfrared, Multilevels, Simple++, Stark-effect modulator, Signal to noise ratio
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-64100DOI: 10.1364/OE.474209Scopus ID: 2-s2.0-85148281393OAI: oai:DiVA.org:ri-64100DiVA, id: diva2:1740107
Merknad

Funding details: H2020 Future and Emerging Technologies, FET; Funding details: European Cooperation in Science and Technology, COST; Funding details: Agence Nationale de la Recherche, ANR, ANR-18-CE09-0035; Funding details: Vetenskapsrådet, VR, 2019-05197; Funding details: Centre National de la Recherche Scientifique, CNRS; Funding details: European Regional Development Fund, ERDF, 1.1.1.2/VIAA/4/20/660; Funding text 1: Funding. ENS-Thales Chair; Centre National de la Recherche Scientifique (Renatech network); Agence Nationale de la Recherche (ANR-18-CE09-0035 project LIGNEDEMIR); H2020 Future and Emerging Technologies (Project cFLOW, Project Qombs); Région Ile-de-France (DIM SIRTEQ); Vetenskapsrådet (project 2019-05197); European Cooperation in Science and Technology (COST Action CA19111 NEWFOCUS); European Regional Development Fund (No. 1.1.1.2/VIAA/4/20/660 project CARAT); R¯igas Tehniska¯ Universita¯te (Science Support Fund).

Tilgjengelig fra: 2023-02-28 Laget: 2023-02-28 Sist oppdatert: 2024-03-04bibliografisk kontrollert

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