Terahertz (THz) technology is probably best known to the public as a powerful tool for imaging, since it has been applied in security and medical scanning, resulting in numerous impressive images that would be unobtainable using other technologies. With the roll-out of 5G mobile networks, research into 6G wireless communications is heating up. It is envisioned that THz technology will be used for 6G and future wireless communications. In this paper, we review how THz technology has been employed for imaging and wireless communications, identify state-of-the-art developments in the field, and then examine and compare common devices and issues in both applications. The possibility of integrating THz imaging/sensing and wireless communications is considered, and challenges and future perspectives are presented and discussed. It is shown that THz technology is indeed a key enabling technology for both imaging and wireless communications in the future.

太赫兹 (THz) 技术可能作为一种强大的成像工具而为公众所熟知，因为它已应用于安全和医学扫描，产生了许多使用其他技术无法获得的令人印象深刻的图像。随着5G移动网络的推出，对6G无线通信的研究正在升温。预计太赫兹技术将用于 6G 和未来的无线通信。在本文中，我们回顾了太赫兹技术如何用于成像和无线通信，确定该领域的最新发展，然后检查和比较两种应用中的常见设备和问题。考虑了集成太赫兹成像/传感和无线通信的可能性，并提出和讨论了挑战和未来前景。