All-Photonic Heterodyne sub-THz Wireless Transmission at 80 GHz, 120 GHz and 160 GHz Carrier Frequencies

Morales, Álvaro; Nazarikov, Gleb; Rommel, Simon; Okonkwo, Chigo; Monroy, Idelfonso Tafur

doi:10.1109/irmmw-thz46771.2020.9370506

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…Our receiver achieved 11 GHz IF bandwidth with an improved THz response over the targeted frequency range from 100 to 300 GHz. Previous works only achieved bandwidths between 37 MHz (IF Bandwidth of the commercially available PCAs used in [16]) and 2 GHz [2], which limited their data rates to between 100 Mbit/s and 10 Gbit/s, respectively, where the latter was only achieved using a THz wave amplifier at the Rx. With our receiver module we were able to achieve error free transmission between 4 and 12 Gbit/s without any THz amplifiers.…”

Section: Discussionmentioning

confidence: 99%

“…So far, only very few such links have been demonstrated since photonic THz receivers typically exhibit only low conversion gain and a low intermediate frequency (IF) bandwidth. In [16], a commercially available photoconductive antenna (PCA) was used as receiver together with a PIN PD emitter. Here, transmission of 100 Mbit/s binary phase shift keying (BPSK) signals over a link distance of 25 cm at carrier frequencies between 80 and 320 GHz was achieved.…”

Section: Introductionmentioning

confidence: 99%

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Optoelectronic Heterodyne THz Receiver for 100–300 GHz Communication Links

Deumer,

Stiewe,

Nellen

et al. 2024

IEEE Access

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Terahertz wireless communications is an increasingly interesting research topic due to the high demand for un-allocated channels and high data rates. Photonic solutions have shown great potential in this field. However, most photonics assisted THz links so far have employed optoelectronics only on the transmit side. Thus, the full potential of photonic THz communication has not been utilized yet. Here, we introduce optoelectronics also on the receive side by using a photoconductive antenna based heterodyne THz detector. This allows down-conversion of data signals from the W-, D-, and THz-band to the baseband using a laser beat signal as local oscillator. Using electromagnetic modeling, we designed passive radio frequency structures and a receiver package to handle high intermediate frequency output signals. In a homodyne spectroscopic setup, the receiver shows a frequency response superior to state-of-the-art photoconductive antennas due to an improved photoconductive material. In a heterodyne testbed, the receiver exhibits a large intermediate frequency bandwidth of 11 GHz and a conversion gain of -47 dB. This enabled us to employ the receiver in a fully photonic wireless link at sub-terahertz and terahertz frequencies together with a PIN photodiode emitter. We achieved error-free transmission of 4-QAM signals with gross data rates up to 12 Gbit/s at carrier frequencies up to 320 GHz. This work shows the huge potential of optoelectronic receivers for THz wireless communications and enables the exploration of full photonic THz links.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optoelectronic Heterodyne THz Receiver for 100–300 GHz Communication Links

Deumer,

Stiewe,

Nellen

et al. 2024

IEEE Access

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“…We summarize up-to-date research efforts on the progress of high-speed THz wireless communication systems [21][22][23][24][25][26][27][28][29][30][31][32][33][34], as shown in Figure 2. The symbols used in the scatter plot correspond to various modulation schemes utilized in different research projects, while the colors distinguish the different approaches adopted by researchers.…”

Section: Thz Waves: Meeting High-speed Communication Needsmentioning

confidence: 99%

Phase Stabilization of a Terahertz Wave Using Mach–Zehnder Interference Detection

Ibrahim

et al. 2023

Electronics

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As a high-frequency carrier, the terahertz (THz) wave is essential for achieving high-data-rate wireless transmission due to its ultra-wide bandwidth. Phase stabilization becomes crucial to enable phase-shift-based multilevel modulation for high-speed data transmission. We developed a Mach–Zehnder interferometric phase stabilization technique for photomixing, which has proved a promising method for phase-stable continuous THz-wave generation. However, this method faced inefficiencies in generating phase-modulated THz waves due to the impact of the phase modulator on the phase stabilization system. By photomixing, which is one of the promising methods for generating THz waves, the phase of the generated THz waves can be controlled in the optical domain so that the stability of the generated THz wave can be controlled by photonics technologies. Thus, we devised a new phase stabilization approach using backward-directional lightwave, which is overlapped with the THz wave generation system. This study presented a conceptual and experimental framework for stabilizing the phase differences of optical carrier signals. We compared the optical domain and transmission performances between forward-directional and backward-directional phase stabilization methods. Remarkably, our results demonstrated error-free transmission at a modulation frequency of 3 Gbit/s and higher.

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“…Although electronic solutions are popular due to their high output powers, photomixers have also shown great potential as emitters (Tx) for millimeter-wave and sub-THz wireless communication applications [3]- [5]. However, only a few photonic receivers (Rx) have been used in communication links so far [6], [7], while electronic mixers remain the dominant technology [3], [8]. To fully exploit the advantages of THz photomixers, such as their high operating bandwidth and low phase noise, further development of respective photonic receivers is crucial.…”

Section: Introductionmentioning

confidence: 99%

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

Deumer

Stiewe

Nellen

et al. 2023

Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI

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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.

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All-Photonic Heterodyne sub-THz Wireless Transmission at 80 GHz, 120 GHz and 160 GHz Carrier Frequencies

Cited by 4 publications

References 5 publications

Optoelectronic Heterodyne THz Receiver for 100–300 GHz Communication Links

Optoelectronic Heterodyne THz Receiver for 100–300 GHz Communication Links

Phase Stabilization of a Terahertz Wave Using Mach–Zehnder Interference Detection

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

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