Advances in terahertz communications accelerated by photonics

Nagatsuma, Tadao; Ducournau, Guillaume; Renaud, Cyril C.

doi:10.1038/nphoton.2016.65

Cited by 1,368 publications

(612 citation statements)

References 76 publications

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“…In specific, photonics-based techniques offer a unique opportunity to attract early users or customers by demonstrating the technology through lasers, modulators and photodiodes which are all already available in the market. These devices also permit the ability to deal with multi-carrier THz channels due to the carrier switching capabilities that facilitate the radio/optical interface in hybrid networks [11]. Table II provides a brief comparison between the current THz technologies available in the literature.…”

Section: A Terahertz Transceiversmentioning

confidence: 99%

Terahertz communication: The opportunities of wireless technology beyond 5G

Elayan

Amin

Shubair

et al. 2018

2018 International Conference on Advanced Communication Technologies and Networking (CommNet)

175

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Abstract-Over the past years, carrier frequencies used for wireless communications have been increasing to meet bandwidth requirements. The engineering community witnessed the development of wide radio bands such as the millimeter-wave (mmW) frequencies to fulfill the explosive growth of mobile data demand and pave the way towards 5G networks. Other research interests have been steered towards optical wireless communication to allow higher data rates, improve physical security and avoid electromagnetic interference. Nevertheless, a paradigm change in the electromagnetic wireless world has been witnessed with the exploitation of the Terahertz (THz) frequency band (0.1-10 THz). With the dawn of THz technology, which fills the gap between radio and optical frequency ranges, ultimate promise is expected for the next generation of wireless networks. In this paper, the light is shed on a number of opportunities associated with the deployment of the THz wireless links. These opportunities offer a plethora of applications to meet the future communication requirements and satisfy the ever increasing user demand of higher data rates.

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Section: A Terahertz Transceiversmentioning

confidence: 99%

Terahertz communication: The opportunities of wireless technology beyond 5G

Elayan

Amin

Shubair

et al. 2018

2018 International Conference on Advanced Communication Technologies and Networking (CommNet)

175

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“…Such laser source emitting tunable THz radiation is of great interest for a number of applications, including indoor communications [27,28], biomedical imaging [29,30], spectroscopy [31,32], homeland security and defense [33,34], among others.…”

Section: Resultsmentioning

confidence: 99%

Compact All-Quantum-Dot-Based Tunable THz Laser Source

Fedorova

Gorodetsky

Rafailov

2017

IEEE J. Select. Topics Quantum Electron.

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Abstract-We demonstrate an ultra-compact, roomtemperature, tunable terahertz (THz) generating laser source based on difference-frequency-driven photomixing in a coplanar stripline InAs/GaAs quantum-dot (QD) antenna pumped by a broadly-tunable, high-power, continuous wave InAs/GaAs QD laser diode in the double-grating quasi-Littrow configuration. The dual-wavelength QD laser operating in the 1150 nm -1301 nm wavelength region with a maximum output power of 280 mW and with tunable difference-frequency (277 GHz -30 THz) was used to achieve tunable THz generation in the QD antenna with a photoconductive gap of 50 µm. The best THz output performance was observed at pump wavelengths around the first excited state of the InAs/GaAs QDs (~1160nm), where a maximum output power of 0.6 nW at 0.83 THz was demonstrated.

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“…digital amplitude modulation, ASK) amplitude modulation of up to 50 Gbps at 0.3 THz [6] -that is, approximately a thousand times current Wi-Fi! In France, researchers at IEMN have been working on very wide bandwidth communications, and ASK signals of up to 46 Gbps have been measured at 0.4 THz [7] and up to 32 Gbps using complex THz signals (quadrature amplitude modulation) over 25 meters [8]. As optical source phase noise requires corrective signal processing at the receiver end, complex signals are already being used to improve link spectral efficacy in the THz range, for even though there is a very wide available bandwidth, the presence of observation services (radio astronomy, meteorology) in this frequency range means that future allocations of THz channels will be in subbands, as illustrated in Figure 5.…”

Section: Terahertzmentioning

confidence: 99%

“…It should, however, be noted that the highest rates were first achieved using emission technologies borrowed from photonics, taking advantage of the wide bandwidths associated with opto-electronic devices. As an example, a demonstration was reported at IEMN [8] for up to 32 Gbps transmission over 25 m at 385 GHz (Fig. 6), using high spectral efficiency.…”

Section: Terahertzmentioning

confidence: 99%