非相干光子辅助太赫兹通信系统综述

Overview on incoherent photonics-assisted terahertz communication system

摘要:

太赫兹通信技术以其丰富的频谱资源已成为未来6G移动通信实现“通信全频谱”的关键候选技术。由于结构简单、易集成、低成本和低功耗等独有优势，基于包络检波方式的非相干光子辅助太赫兹通信系统受到研究者们的广泛关注与青睐。本文在总结非相干光子辅助太赫兹通信系统的结构、特点及其涉及的关键技术的基础上，介绍了近几年来国内外有关太赫兹包络检波器和基于包络检波器的非相干光子辅助太赫兹通信系统的研究现状和突出成果。此外，还对基于幅度调制和基于同相正交(IQ)调制的非相干光子辅助太赫兹通信系统分别进行了详细的论述，并比较了各自的优缺点。最后，展望了未来面向6G的非相干光子辅助太赫兹通信系统及其关键器件的发展方向。

Abstract:

Terahertz communication has become one of the key candidate techniques for future 6G mobile communication to realize "communication with full spectra" because of its rich spectrum resources. Due to the unique advantages such as simple structure, easy integration, low cost and low power consumption, the incoherent photonics-assisted terahertz communication system based on envelope detection technique has been widely concerned and favored by the researchers. By summarizing the structure, characteristics and key techniques of incoherent photonics-assisted terahertz communication systems, current research status and outstanding achievements of the terahertz envelope detectors and the incoherent photonics-assisted terahertz communication systems at home and abroad in recent years are introduced. In addition, the incoherent photonics-assisted terahertz communication system based on amplitude modulation and In-phase Quadrature(IQ) modulation are discussed in detail, and the advantages and disadvantages of each system are also compared. Finally, the future development directions of 6G-oriented incoherent photonics-assisted terahertz communication systems and the crucial devices are expected.