Abstract

Terahertz (THz) photonics technique can break through the bandwidth limitation of electronic mixing method and be seamless integrated with optical access networks, which has bright prospects in future 6G broadband communication. However, due to the bottleneck of photoelectric conversion efficiency of uni-travelling photodiode (UTC-PD), the power of the generated THz-wave signal is usually only in the microwatt level, and the THz-wave wireless transmission distance is short. In this paper, we summarize the key techniques we use to extend the wireless range for photonics-aided THz-wave communication, which includes THz-wave amplifiers and antennas, heterodyne detection, probabilistic shaping (PS) technique as well as advanced digital signal processing (DSP). Meanwhile, we report our recent research including 104\200\400-m photonics-aided THz-wave wireless transmission records.

Wireless transmission of a 200-m PS-64QAM THz-wave signal using a likelihood-based selection radius-directed equalizer

Junjie Ding, Mingxu Wang, Weiping Li, Bowen Zhu, Feng Wang, Chen Wang, Yanyi Wang, Wen Zhou, Jiao Zhang, Min Zhu, and Jianjun Yu
Opt. Lett. 47(15) 3904-3907 (2022)

Coherent terahertz wireless communication using dual-parallel MZM-based silicon photonic integrated circuits

Wonkyoung Lee, Seungjun Han, Sang-Rok Moon, Jongwoo Park, Sanghwa Yoo, Heuk Park, Joon Ki Lee, Kyoungsik Yu, and Seung Hyun Cho
Opt. Express 30(2) 2547-2563 (2022)

Terahertz wireless communications based on photonics technologies

Tadao Nagatsuma, Shogo Horiguchi, Yusuke Minamikata, Yasuyuki Yoshimizu, Shintaro Hisatake, Shigeru Kuwano, Naoto Yoshimoto, Jun Terada, and Hiroyuki Takahashi
Opt. Express 21(20) 23736-23747 (2013)

Photonics-aided 2 × 2 MIMO wireless terahertz-wave signal transmission system with optical polarization multiplexing

Xinying Li, Jianjun Yu, Kaihui Wang, Wen Zhou, and Jiao Zhang
Opt. Express 25(26) 33236-33242 (2017)

Demonstration of photonics-aided terahertz wireless transmission system with using silicon photonics circuit

Sang-Rok Moon, Seungjun Han, Sanghwa Yoo, Heuk Park, Won-Kyoung Lee, Joon Ki Lee, Jongwoo Park, Kyoungsik Yu, Seung-Hyun Cho, and Joonyoung Kim
Opt. Express 28(16) 23397-23408 (2020)