The terahertz band (0.1 THz-10 THz) with massive spectrum resources is recognized as a promising candidate for future rate-greedy applications, such as 6G communications. Optoelectronic terahertz communications are beneficial for realizing 100 Gb/s data rate and beyond, which have greatly promoted the progress of the 6G research. In this article, we give technical insight into the key technologies of optoelectronic terahertz communications with high data rates in the physical layer, including approaches of broadband devices, baseband signal processing technologies, and design of advanced transmission system architectures. A multicarrier signal processing routine with high noise tolerance is proposed and experimentally verified in a 500 Gb/s net rate terahertz communication system. Finally, we discuss the future directions of optoelectronic terahertz technologies toward the target of terabit- scale communications.

中文翻译：

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超100Gb/s光电太赫兹通信：关键技术与方向

具有海量频谱资源的太赫兹频段（0.1 THz-10 THz）被认为是未来速率贪婪应用（例如 6G 通信）的有希望的候选者。光电太赫兹通信有利于实现100 Gb/s及以上的数据速率，极大地推动了6G研究的进展。在本文中，我们对物理层高数据速率光电太赫兹通信的关键技术进行了技术洞察，包括宽带设备的方法、基带信号处理技术和先进传输系统架构的设计。提出了一种具有高噪声容限的多载波信号处理程序，并在 500 Gb/s 净速率太赫兹通信系统中进行了实验验证。最后，