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Wireless THz link with optoelectronic transmitter and receiver

Harter, Tobias; Ummethala, Sandeep; Blaicher, Matthias; Muehlbrandt, Sascha; Wolf, Stefan; Weber, Marco; Adib, Md Mosaddek Hossain; Kemal, Juned. N.; Merboldt, Marco; Boes, Florian; Nellen, Simon; Tessmann, Axel; Walther, Martin; Globisch, Björn; Zwick, Thomas; Freude, Wolfgang; Randel, Sebastian; Koos, Christian

Abstract:
Photonics might play a key role in future wireless communication systems that operate at terahertz (THz) carrier frequencies. A prime example is the generation of THz data streams by mixing optical signals in high-speed photodetectors. Over previous years, this concept has enabled a series of wireless transmission experiments at record-high data rates. Reception of THz signals in these experiments, however, still relied on electronic circuits. In this paper, we show that wireless THz receivers can also greatly benefit from optoelectronic signal processing techniques, in particular when carrier frequencies beyond 0.1 THz and wideband tunability over more than an octave is required. Our approach relies on a high-speed photoconductor and a photonic local oscillator for optoelectronic downconversion of THz data signals to an intermediate frequency band that is easily accessible by conventional microelectronics. By tuning the frequency of the photonic local oscillator, we can cover a wide range of carrier frequencies between 0.03 and 0.34 THz. We demonstrate line rates of up to 10 Gbit/s on a single channel and up to 30 Gbit/s on multiple channels transmitted over a distance of 58 m. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000099268
Veröffentlicht am 24.10.2019
Coverbild
Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Institut für Hochfrequenztechnik und Elektronik (IHE)
Institut für Photonik und Quantenelektronik (IPQ)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 2334-2536
KITopen-ID: 1000099268
Erschienen in Optica
Band 6
Heft 8
Seiten 1063-1070
Vorab online veröffentlicht am 13.08.2019
Nachgewiesen in Web of Science
Scopus
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