高频、高功率光生毫米波形成理论与方法研究

项目名称： 高频、高功率光生毫米波形成理论与方法研究

项目编号： No.61471130

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 韩一石

作者单位： 广东工业大学

项目金额： 78万元

中文摘要： 光学产生高频毫米波(>100GHz, 亚太赫兹波段)的理论与方法，对太赫兹光纤通信(Terahertz over fiber,ToF)系统的传输实现至关重要，是太赫兹通信技术重点研究领域，也是未来超高速无线通信发展方向之一。目前ToF技术研究多基于双边带差倍频技术，受限于较低的信号输出功率，难以投入真正实际应用，是困扰ToF技术发展的主要原因。 本研究突破双边带拍频技术思路，提出多边带联合拍频，且拍频信号动态叠加的方法实现高功率ToF系统光生毫米波。在理论上，依据电磁场传播动力学的量化计算和理论模拟，结合多边带信号互作用环境下优化状态模型，明确高频毫米波信号形成机理和规律性表现，探究其质量影响因素和改善途径。同时采用扩展的ToF系统色散分析理论、逆问题优化算法及实验验证手段，进一步提高信号输出功率以达到实用化水平。本项目研究可为ToF技术研究提供理论和实践依据，促进ToF技术的发展。

中文关键词： 光载无线通信；光生毫米波；光学多倍频；信号功率

英文摘要： Terahertz(THz) over Fiber(ToF) is the most important research in Terahertz communication technology, which becomes an attractive sulution for future high-speed wireless communications due to its large capacity and high flexibility for both fixed and moble users. The known technique to generate a optical sub-THz wave(>100GHz, we also call high-frequency millimeter wave in this project) signal for ToF system is to heterodyne two optical waves which beat at a photodetector (PD). But the power of the generated sub-THz wave signals is too low to be used in really application, and the system is too complicated to realize, all which hindered the development of the ToF technology. This project proposes a technology of Optical Multi-sidebands Modulation (OMSB) for generation sub-THz wave signal which has high-power performance and tunable frequency range. In this project, a kinetic model theory for sub-THz wave signal generation using OMSB is proposed, and the mechanism of gereation the optical multi-sidebands by a designed optical interleaver module is reviealed. We also demonstrated a experimential test for sub-THz wave signal, found the performance regularity of the signal in the proposed system. At last, total analysis about sub-THz wanve amplitude fading caused by optical fiber dispersion is presented, and several methods to improve the quality of sub-THz wave signal is also researched.The proposed novel technique provides the reliable theory analysis and experimentally demonstrate, which is potential solution for development of ToF technology.

英文关键词： Radio over Fiber;Optical millimeter-wave generation;Optical frequency multi-tupling;Power of signal