作为通信系统中CO2排放大户，无线接入网是实现高能效网络的关键，这意味着RoF（Radio-over-Fiber）技术作为一种具有优越性能的无线接入网方式，其发展也必然要经得起高能效的检验，因此，研究高能效RoF技术具有重要的科学意义和实用价值。本课题旨在研究基于光注入半导体激光器丰富的非线性动力学行为实现高能效RoF技术中的关键技术，具体包括：（1）基于光注入半导体激光器单周期振荡态的光生微波技术；（2）基于光注入技术的下行多业务信号的调制和基于波长再利用技术的上行信号调制技术；（3）利用单周期振荡态实现高效率调制格式转换技术。该项目旨在基于分层绿色的设计理念，将宽带绿色化贯穿到信号编码、调制、传输、解调等各级信号处理层面，开展基于光注入半导体激光器单周期振荡态的高能效RoF技术理论分析和实验方面的研究，研究成果将促进和丰富光注入半导体激光器在高能效RoF技术领域的应用和发展。

As a large contributor to CO2 emissions, wireless access network is crucial to energy-efficient Internet. It indicates that the development of the RoF (Radio-over-Fiber) technology, as a kind of brilliant wireless access network, inevitably experiences the torture of high energy-efficiency. Therefore, it has both scientific and practical significance to investigate energy-efficient RoF technology. This proposal aims at the research of energy-efficient radio-over-fiber links based on the nonlinear dynamics of optically injected semiconductor lasers. Key technologies are studied from several aspects as follows: (1) optical microwave generation based on period-one oscillation state of the optically injected semiconductor laser; (2) downlink multi-service signals modulation based on optical injection, and uplink signal modulation based on wavelength reuse; (3) modulation format conversion with high efficiency based on the period-one oscillation state. Featuring the concept of greening every unit in terms of signal coding, modulation, transmission, and demodulation, this proposal will explore theoretical and experimental analysis on energy-efficient RoF technology based on the period-one oscillation state of the optically injected semiconductor laser. The achievement of this proposal will promote and enrich the application and development of the optically injected semiconductor laser in energy-efficient RoF technology.