Reviewing the Scope of THz Communication and a Technology Roadmap for Implementation

Rahaman, Hafizur; Bandyopadhyay, Aparajita; Pal, Surendra; Ray, K. P.

doi:10.1080/02564602.2020.1771221

Cited by 27 publications

(11 citation statements)

References 34 publications

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“…In the proof-of-concept experiment, the authors used two UTC-PDs and FMB as emitter, LO, and detector, respectively, to do coherent detection [22]. Although the coherent detection performance is significantly better and detected power is tens of dB higher than direct detection [21], it considerably increases the complexity and cost of the system, which is undesirable in the following communication era, 6G, where the connectivity density is one order of magnitude higher than the connectivity density of 5G [2]. In recent years, besides system architecture designs, data-driven-based techniques (e.g., machine learning) combined with advanced DSP methods have also been employed to improve the performance of sub-THz and THz communication systems.…”

Section: Introductionmentioning

confidence: 99%

A 5G/Sub-Terahertz Heterogeneous Communication Network

et al. 2022

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In this paper, a heterogeneous communication system capable of delivering 5G/sub-terahertz signal carriers over an arbitrary long fiber and separated transmission links is presented by employing direct detection, multiplexing techniques, and advanced digital signal processing. In this experiment, the 3.5 GHz and 28.5 GHz carrier frequencies, representing 5G links, deliver 4 Gb/s 16-QAM OFDM signals to separate user ends over a 1-meter wireless link distance. Later, the sub-terahertz wireless communications of 4 to 10 Gb/s QPSK and 8-QAM signals with varying carrier frequencies of 125-,175-and 225 GHz, over wireless distances (< 80 cm) are presented and evaluated. The results indicate that by increasing optical power from 12dBm to 13dBm the bit error rate decreases 2 order of magnitudes. Eventually, with the assistance of artificial intelligence, a nonlinear equalizer (AI-NLE) prototype is introduced. The results indicate that the AI-NLE successfully decreases the number of errors in received data by one order of magnitude. The proposed heterogeneous system is compatible with radio-over-fiber technology, cost-effective, and easy to deploy, making it a promising candidate for indoor terahertz communication.

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Section: Introductionmentioning

confidence: 99%

A 5G/Sub-Terahertz Heterogeneous Communication Network

et al. 2022

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“…The terahertz (THz) region (typically defined between 0.1 THz and 10 THz) has proven to be critical for numerous applications in both fundamental science and industry, including communications [1][2][3], sensing [4], non-invasive imaging [5], nanoscopy [4,6,7] and ultrafast classical and quantum systems. In particular, detecting THz radiation is central to spectroscopy since the THz range hosts low-energy material resonances.…”

Section: Introductionmentioning

confidence: 99%

Terahertz waveform synthesis from integrated lithium niobate circuits

Herter¹,

Shams-Ansari²,

Settembrini³

et al. 2022

Preprint

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Bridging the "terahertz (THz) gap" relies upon synthesizing arbitrary waveforms in the THz domain enabling applications that require both narrow band sources for sensing and few-cycle drives for classical and quantum objects. However, realization of custom-tailored waveforms needed for these applications is currently hindered due to limited flexibility for optical rectification of femtosecond pulses in bulk crystals. Here, we experimentally demonstrate that thin-film lithium niobate (TFLN) circuits provide a versatile solution for such waveform synthesis through combining the merits of complex integrated architectures, low-loss distribution of pump pulses on-chip, and an efficient optical rectification. Our distributed pulse phase-matching scheme grants shaping the temporal, spectral, phase, amplitude, and farfield characteristics of the emitted THz field through designer on-chip components. This strictly circumvents prior limitations caused by the phase-delay mismatch in conventional systems and relaxes the requirement for cumbersome spectral pre-engineering of the pumping light. We provide a toolbox of basic blocks that produce broadband emission up to 680 GHz with adaptable phase and coherence properties by using near-infrared pump pulse energies below 100 pJ.

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“…Излучение терагерцового (ТГц) диапазона частот перспективно для решения различных практически важных задач и может быть использовано в системах спектроскопии [1], визуализации [2], детектирования и передачи данных [3]. Для ТГц технологий актуальна проблема, связанная с отсутствием доступных и эффективных терагерцовых устройств [4].…”

Section: Introductionunclassified

Детектор терагерцового излучения на основе термоэлектрического материала Bi-=SUB=-88-=/SUB=-Sb-=SUB=-12-=/SUB=--=SUP=-*-=/SUP=-

Макарова¹,

Асач²,

Тхоржевский³

et al. 2022

Физика И Техника Полупроводников

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Terahertz radiation is very promising for visualization, detection and data transfer. Searching for sensitive, fast and compact THz detector that operates at room temperature is a common subject for these applications. Hence, there is still an issue of searching for new materials for THz radiation detection. Solid solutions based on thermoelectric bismuth and antimony appear to have significant potential for these applications. In this paper photoresponse of thermoelectric material Bi88Sb12 has been studied for the first time. Films with thicknesses of 70 and 150 nm were studied under influence of radiation at frequency of 0.14 THz.

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Reviewing the Scope of THz Communication and a Technology Roadmap for Implementation

Cited by 27 publications

References 34 publications

A 5G/Sub-Terahertz Heterogeneous Communication Network

A 5G/Sub-Terahertz Heterogeneous Communication Network

Terahertz waveform synthesis from integrated lithium niobate circuits

Детектор терагерцового излучения на основе термоэлектрического материала Bi-=SUB=-88-=/SUB=-Sb-=SUB=-12-=/SUB=--=SUP=-*-=/SUP=-

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