面向ROF的光电转换阵列式毫米波功率合成理论与实验研究

光载无线（ROF）技术是应高速大容量无线通信需求，新兴发展起来的将光纤通信和无线通信相结合的通信技术。ROF技术催生了对超高速、大饱和输出功率的光电探测器的需求。本项目面向ROF技术，研究以单个UTC-PD为基本单元，利用功率合成技术，将几个UTC-PD按一定的阵列结构连接，构成光电探测器单元，使其输出功率进行合成，以提高光电探测器的输出功率和工作带宽，为研制适合ROF系统的大功率光电探测器提供理论和实验依据。将光纤放大器和高饱和输出功率的光电探测器相结合，可以取消光电探测器后面的毫米波放大器，实现全光通信系统，极大地改善ROF系统性能。本项目研究内容属于信息学部优先发展的研究领域，所以本项目不仅具有重要的科学意义，更具有很强的前瞻性和广阔的应用价值。

ROF technology is the newly developed technology for high-speed and large-capacity communication. It combines radio communication and fiber communication. ROF technology desires ultra-high speed and high saturated output power photodetector. This project is mainly for ROF technology. The single UTC-PD is used as the basic unit for power combining, and photodetector unit is composed of several UTC-PD units connected in some array. The power combing of the photodetector unit is used to improve output power and operation bandwidth. This research will provide theoretical and experimental basis for the high power photodetector of the ROF system. If fiber amplifier is combined with high saturation output photodetector, the millimeter-wave amplifier after photodetector is no longer needed, which means the full optical communication systems is implemented and the performance of the ROF system will be significantly improved. The research area of the proposed project is the top priority of the NSFC Information Department. Therefore, this project has not only significant scientific importance but also forward looking value and broad applications.