Real-Time Demonstration of 100 GbE THz-Wireless and Fiber Seamless Integration Networks

• Published in: Journal of lightwave technology Vol. 41; no. 4; pp. 1129 - 1138
• Main Authors: Zhang, Jiao, Zhu, Min, Hua, Bingchang, Lei, Mingzheng, Cai, Yuancheng, Zou, Yucong, Tong, Weidong, Ding, Junjie, Tian, Liang, Ma, Like, Xiao, Jinbiao, Huang, Yongming, Yu, Jianjun, You, Xiaohu
• Format: Journal Article
• Language: English
• Published: New York IEEE 15.02.2023; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Digital coherent optics module; Dual polarization (waves); Error correction; Fiber optics; Fiber-optic networks; High-speed optical techniques; Mach-Zehnder interferometers; MIMO communication; Miniaturization; Modulators; Multiple-input multiple-output; Optical communication; Optical fiber amplifiers; Optical fiber communication; Optical fiber devices; Optical fiber polarization; Optical polarization; Polarization; Polarization multiplexing; Power amplifiers; Power consumption; Quadrature phase shift keying; Real time; Seamless integration; Signal processing; Terahertz-band; THz-to-optical conversion; Wireless communication; Wireless communications
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.2022.3204268

We propose and experimentally demonstrate a real-time fiber-THz-fiber 2 × 2 multiple-input multiple-output (MIMO) seamless integration system at 340-510 GHz using commercial digital coherent optics (DCO) modules for baseband signals processing, which realizes a record net rate of 103.125 Gb/s dual polarization quadrature-phase-shift-keying (DP-QPSK) signals delivery over two spans of 20 km wireline single-mode fiber-link and 3 m wireless 2 × 2 MIMO link without using THz power amplifier under 15% soft-decision forward-error-correction threshold (SD-FEC) of 1.56 × 10 −2 . Two kinds of THz-to-optical conversion schemes based on an integrated dual-polarization Mach-Zehnder modulator (DP-MZM) and two discrete intensity-modulators (IMs) are extensively investigated and compared. To the best of our knowledge, this is the first real-time demonstration of THz-wireless and 100 GbE fiber-optic networks seamless integration transmission, which is compatible with IEEE 802.3 and ITU-T G.798 specifications. It is a promising scheme to meet the demands of future fiber-wireless-integrations communication for low power consumption, low cost and miniaturization.