Present and Future of Terahertz Communications

Song, Ho-Jin; Nagatsuma, Tadao

doi:10.1109/tthz.2011.2159552

Cited by 1,072 publications

(402 citation statements)

References 59 publications

Supporting

Mentioning

394

Contrasting

Unclassified

Order By: Relevance

“…In particular, high-capacity short-distance wireless communication is an important application of this range. Demonstrations of THz communication have been intensively carried out [2,3,4,5].…”

Section: Introductionmentioning

confidence: 99%

Terahertz oscillation of resonant tunneling diodes with deep and thin quantum wells

Kanaya

Suzuki

Asada

2013

IEICE Electron. Express

View full text Add to dashboard Cite

Terahertz oscillators using AlAs/InGaAs resonant tunneling diodes with deep and thin quantum wells are reported. Although a thin well has been shown to be effective for highfrequency oscillation until now due to a reduced electron dwell time, it caused an increase in bias voltage. We introduce a deep well with indium-rich InGaAs to maintain or even to reduce the bias voltage. Current-voltage and oscillation characteristics are compared between the quantum wells with 3.5-nm-thick In 0.8 Ga 0.2 As and 3-nm-thick In 0.9 Ga 0.1 As. The highest oscillation frequency was 0.96 THz for the former while 1.27 THz for the latter without increase in bias voltage.

show abstract

Section: Introductionmentioning

confidence: 99%

Terahertz oscillation of resonant tunneling diodes with deep and thin quantum wells

Kanaya

Suzuki

Asada

2013

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

“…These properties allow the use THz radiation in spectroscopy [1], near-field microscopy [2], scanning security systems, and also in medicine (for example, in the tomography which can visualize layers of the body up to several cm in depth) and in communications systems. A huge incentive for the creation of devices to control THz radiation is that doing so would allow the application of this radiation in many directions, including the field of the THz communications [3].…”

Section: Introductionmentioning

confidence: 99%

Optically controlled terahertz filter based on graphene and cross-like metasurface

Grebenchukov¹,

Zaitsev²,

Khodzitskiy³

2017

Nanosystems: Phys. Chem. Math.

View full text Add to dashboard Cite

We propose a theoretical model for the optically controlled terahertz filter based on hybrid graphene/metasurface structure. Such a device has a high accuracy for the frequency adjustment by the different intensities of the optical pumping in the infrared spectral range, fast response time and polarization independence. The tuning by optical pumping of the spectral characteristics of the filter in term of resonant frequency and Q-factor was shown.

show abstract

“…Recently, there is an increased interest in utilization of these frequencies in a range of commercial applications, including broadband communications, motivated mainly by the availability of large bandwidths required for the multigigabit short-range wireless communications [5]. Consequently, there is a constant advance in the development of components and systems for millimeter and submillimeter wave frequencies [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Graphene-based waveguide resonators for submillimeter-wave applications

Ilić

Bukvic

Ilić

et al. 2016

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

Abstract. Utilization of graphene covered waveguide inserts to form tunable waveguide resonators is theoretically explained and rigorously investigated by means of full-wave numerical electromagnetic simulations. Instead of using graphene based switching elements, the concept we propose incorporates graphene sheets as parts of a resonator. Electrostatic tuning of the graphene surface conductivity leads to changes in the electromagnetic field boundary conditions at the resonator edges and surfaces, thus producing an effect similar to varying electrical length of a resonator. Presented outline of the theoretical background serves to give phenomenological insight into the resonator behavior, but it can also be used to develop customized software tools for design and optimization of graphene based resonators and filters. Due to the linear dependence of the imaginary part of the graphene surface impedance on frequency, the proposed concept was expected to become effective for frequencies above 100 GHz, which is confirmed by the numerical simulations. Frequency range from 100 GHz up to 1100 GHz, where the rectangular waveguides are used, is considered. Simple, all-graphene based resonators are analyzed first, to assess the achievable tunability and to check the performance throughout the considered frequency range. Graphene-metal combined waveguide resonators are proposed in order to preserve excellent quality factors typical for the type of waveguide discontinuities used. Dependence of resonator properties on key design parameters is studied in detail. Dependence of resonator properties throughout the frequency range of interest is studied using eight different waveguide sections appropriate for different frequency intervals. Proposed resonators are aimed at applications in the submillimeter-wave spectral region, serving as the compact tunable components for the design of bandpass filters and other devices.

show abstract

Present and Future of Terahertz Communications

Cited by 1,072 publications

References 59 publications

Terahertz oscillation of resonant tunneling diodes with deep and thin quantum wells

Terahertz oscillation of resonant tunneling diodes with deep and thin quantum wells

Optically controlled terahertz filter based on graphene and cross-like metasurface

Graphene-based waveguide resonators for submillimeter-wave applications

Contact Info

Product

Resources

About