非相干双激光源倍频式毫米波光子发生器研究

项目名称： 非相干双激光源倍频式毫米波光子发生器研究

项目编号： No.61471033

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： 宁提纲

作者单位： 北京交通大学

项目金额： 83万元

中文摘要： 倍频式毫米波光子发生器，充分利用微波光子学优势，可产生具有高频率、高纯度、高倍频因子等特性的毫米波，其在下一代高速率、大容量通信，ROF通信系统，军用雷达监测、测量、传感等军用和民用领域有着重要的应用前景。本申请提出的非相干双激光源倍频式毫米波光子发生器采用独立双光源结构，利用前向调制技术替代传统此类方案中为获得具有大频率间隔的相干光所使用的锁相环技术，可在无需进行复杂相位锁定的情况下，获得用于拍频的两个相干光边带，从而获得高纯度的毫米波信号除此之外，本项目还将针对其中的几个关键技术进行深入研究，包括：相位噪声消除措施、色散走离问题、光路失配问题以及误码率评估等。本项目的新意在于，方案可同时结合了二次外差技术，通过使用新型的调制器件，能够在商业级别设备上实现至少2^2倍及以上的倍频因子，极大降低了系统所使用的本振源频率，同时其低成本特性无疑是符合现代系统小型化、低成本化的要求。

中文关键词： 微波光子；非相干双激光源；前向调制；毫米波发生器

英文摘要： Frequency multiplied millimeter-wave photonic generator makes full use of the advantages of microwave photonics, it can generate millimeter wave with high frequency, high-purity, high-frequency multiplication factor and other characteristics so that it has important applications in the next generation of high-speed, large-capacity communications, RoF communications systems, military radar monitoring, measurement, sensors and other military and civilian fields. Unlike the traditional phase-locked loop technology that can obtain a large frequency span coherent light, the proposed incoherent dual laser source frequency multiplied millimeter wave photon generator employs independent dual laser source structure and forward modulation technique to obtain two coherent optical sidebands that are used for beat without complex phase-locked, thus obtain high-purity millimeter wave signal. In addition, the project will be carried out in-depth research on a few of the key technologies, such as phase noise elimination measures, dispersion walk-off problem, optical mismatch problem and BER assessment etc. The innovation of this project is that it combines with the secondary heterodyne techniques, and it can realize at least 2^2 times or more multiplier factor in the business-level device by using the new modulator. Thus the proposed scheme can reduce the local oscillator frequency used by the system greatly and its cost-saving feature is undoubtedly meets modern system miniaturization and low-cost requirements.

英文关键词： Microwave photons;Incoherent dual laser source;Forward modulation;Millimeter-wave photonic generator