120 Gb/s Wireless Terahertz-Wave Signal Delivery by 375 GHz-500 GHz Multi-Carrier in a 2 × 2 MIMO System

Li, Xinying; Yu, Jianjun; Wang, Kaihui; Kong, Miao; Zhou, Wen; Zhu, Zihang; Wang, Can; Zhao, Mingming; Chang, Gee‐Kung

doi:10.1109/jlt.2018.2862356

Cited by 63 publications

(23 citation statements)

References 20 publications

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“…The optical sideband with modulation signal is input to IQ modulator, carrying 2-Gbaud vector 16-QAM baseband signal. The pseudo-random binary sequence (PRBS) with the word length of 2 18 -1 maps the modulated 16-QAM baseband signal and the baseband signal goes through low pass filter. To make sure that the modulated optical carrier with the optical LO combined by optical coupler have large enough amplitude when the optical frequency comb line with modulation signal is relatively small.…”

Section: Simulation Setup and Resultsmentioning

confidence: 99%

“…Now employing optical heterodyne beating of two independent free running lasers is the major method to produce photonic vector THz-wave signal, which has huge merits of simplifying transmitter structure design and get radio frequency carrier tuned and frequency assignment easily [18][19][20][21][22][23][24][25][26]. However, the generated continuous light-waves based on two independent running lasers encounter frequency instabilities.…”

Section: Introductionmentioning

confidence: 99%

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16-QAM Vector Terahertz-Wave Signal Generation by Simple MZM-Based Optical Frequency Comb

Chen

Huang

et al. 2021

IEEE Photonics J.

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Section: Simulation Setup and Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

16-QAM Vector Terahertz-Wave Signal Generation by Simple MZM-Based Optical Frequency Comb

Chen

Huang

et al. 2021

IEEE Photonics J.

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“…The propagation constant and Z0 of the GL-CPW are given by [48] (6) where ΔL and ΔC are the distributed CPW components obtained by [52]. Thus, the ABCD parameters of the GL-CPW switch are [55] (7) To validate the accuracy of the proposed model, we compare the analytical model results with full-wave simulations, as shown in Fig. 10.…”

Section: B Shunt Cpw Topologymentioning

confidence: 99%

“…In this case, we consider that the graphene distributed admittance is given by ΔGgr=NL/Zgr,sheet. The ABCD parameters are obtained using (7). The comparison between the full-wave simulations and the proposed model are depicted in Fig.…”

Section: B Shunt Cps Topologymentioning

confidence: 99%

Modeling and Analysis of Sub-Millimeter-Wave Graphene Switches for On-Wafer Coplanar Transmission Lines

Theofanopoulos¹,

Trichopoulos²

2020

Preprint

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We present an analysis of graphene loaded transmission line switches. Namely, we propose equivalent circuit models for graphene loaded coplanar waveguides and striplines and examine the switching performance under certain design parameters. As such, the models account for the distributed effects of electrically-large shunt switches in coplanar waveguides and we use the Babinet’s principle to derive the respective models for the coplanar stripline transmission lines. Using these models, we identify the optimum design of graphene switches based on transmission line characteristic impedance, scaling factor, graphene shape, and topology (series or shunt). We vary these parameters and obtain the insertion loss and ON/OFF ratio. Τhe extracted results can act as the design roadmap toward an optimum switch topology and emphasize the limitations with respect to fabrication challenges, parasitic effects, and radiation losses. In our models, we use measured graphene values (sheet impedance) instead of theoretical equations, to obtain the actual switching performance. Finally, the proposed equivalent models are crucial for this in-depth study; since, we simulated more than 2,000,000 configurations, a computationally challenging task with the use of full-wave solvers

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“…With the rapid expansion of the wireline and wireless communication in the last few decades, the photonic-assisted THz-wave (0.3 THz-10 THz) is gradually becoming a potential choice to supply large bandwidth and long-distance high-capacity services to meet the urgent requirements [1]- [4]. This enables wireless communication in the THz-band to offer several gigabits or even hundreds of gigahertz of mobile data transmission per second on account of its inherently wider bandwidth [5]- [12]. However, the higher the frequency would result in a larger transmission loss of the signals, which has a great influence on the transmission distance of the THz-wave signal.…”

Section: Introductionmentioning

confidence: 99%

Terahertz-Wave Generation Based on Optical Frequency Comb and Single Mach-Zehnder Modulator

Chen

et al. 2020

IEEE Photonics J.

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A novel Terahertz-wave (THz-wave) generation on the strength of optical frequency comb and single push-pull Mach-Zehnder modulator (MZM) with a pair of transmitter and receiver in 0.4-THz band is proposed. The advantages of the optical frequency comb based on phase modulator (PM) 1 and PM2 in series includes the uncomplicated operation and good stability to produce numerous subcarriers at 25-GHz intervals. THz-wave is generated based on two comb lines derived from the same optical frequency comb. One comb line is used as an optical local oscillator (LO) and the other is served as signal carrier for data modulation for heterodyne mixing. We investigate the generation and transmission of a 0.4 THz THz-wave signal carrying 4 Gbaud quadrature-phase-shift-keying (QPSK) or 1 Gbaud 16 quadrature amplitude modulation (16-QAM) data over back-to-back (BTB) transmission or 10 km standard single-mode fiber (SSMF) transmission, with the bit-error-rate (BER) performance below the hard decision forward error correction (HD-FEC) threshold of 3.8e-3.

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120 Gb/s Wireless Terahertz-Wave Signal Delivery by 375 GHz-500 GHz Multi-Carrier in a 2 × 2 MIMO System

Cited by 63 publications

References 20 publications

16-QAM Vector Terahertz-Wave Signal Generation by Simple MZM-Based Optical Frequency Comb

16-QAM Vector Terahertz-Wave Signal Generation by Simple MZM-Based Optical Frequency Comb

Modeling and Analysis of Sub-Millimeter-Wave Graphene Switches for On-Wafer Coplanar Transmission Lines

Terahertz-Wave Generation Based on Optical Frequency Comb and Single Mach-Zehnder Modulator

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