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Conference 12420 > Paper 12420-6
Paper 12420-6

Purely photonic wireless link at 120 GHz carrier frequency enabled by heterodyne detection with a photoconductive antenna

30 January 2023 • 1:40 PM - 2:00 PM PST | Moscone Center, Room 160 (Upper Mezzanine South)

Abstract

We demonstrate a fully photonic sub-THz communication link using a PIN photodiode (PD) emitter and an optimized photoconductive antenna (PCA) as a heterodyne receiver. The novel receiver comprises an iron-doped indium gallium (InGaAs) PCA on a silicon lens and passive radio frequency (RF) circuitry, all packaged into a fiber-coupled module. A 3-dB-bandwidth of 11 GHz for the intermediate frequency was measured. We analyzed the capabilities of the receiver in a wireless communication link over a distance of 1 m with a PIN photodiode as the emitter. At a carrier frequency of 120 GHz, we demonstrate error free transmission for net data rates up to 10 Gbit/s with quaternary quadrature amplitude modulation (4-QAM) modulation.

Presenter

Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI (Germany)
Milan Deumer was born in Berlin in 1993. From 2012 - 2018 he did a bachelor's and master's degree in electrical engineering at the technical university of Berlin with a focus on high frequency communications and signal processing. During his studies he already worked at the Fraunhofer HHI as a student assistant in the terahertz group where he also wrote his bachelor's and master's theses. After a short stay at Australia's Commonwealth Scientific and Industrial Research Organization (CSIRO) as a visiting scientist in 2019 he rejoined the Terahertz Sensors and Systems group of the Fraunhofer HHI for his PhD in early 2020. There he focuses on the development photoconductive terahertz receivers for continuous wave terahertz spectroscopy and communications.
Presenter/Author
Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI (Germany)
Author
Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI (Germany)
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Simon Nellen
Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI (Germany)
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Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI (Germany)
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Robert Elschner
Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI (Germany)
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Colja Schubert
Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI (Germany)
Author
Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI (Germany)
Author
Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI (Germany)