Research Equipment: A Phase and Amplitude Noise Measurement System

研究设备：相位和幅度噪声测量系统

• 批准号: 9622298
• 负责人: Guifang Li
• 金额: $ 6.45万
• 依托单位: Rochester Institute of Tech
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-06-01 至 1998-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9622298&HistoricalAwards=false
• 关键词: Research; Equipment; Phase; Amplitude; Noise

9622298 Li The Department of Electrical Engineering at Rochester Institute of Technology will purchase a phase and amplitude measurement systems which will be dedicated to support research in engineering. The equipment will be used for several research projects, including in particular: 1. "A Novel FM Microwave Fiber-Optic Link for Antenna Remoting and Phased Arrays' 2. "An Ultra Wideband Microwave Fiber-Optic Transmitter Based on Laser Diodes with Short External Cavity" 3. "All-Optical SCM and WDM-SCM Multi-Access Networks" These research projects share a key innovation in generating microwave/millimeter-wave subcarriers on an optical carrier exploiting "instabilities" of nonlinear optical systems. Specifically, the microwave/millimeter-wave subcarriers are generated all optically using the optical current controlled oscillator (CCO) which systematically exploits inherent nonlinear dynamics, mainly the formation of periodic orbits. The phase and amplitude noise of the subcarrier determines, to a large extent, the signal-to-noise ratio (bit-error rate) of the analog (digital) links or communication networks. The equipment requested will be used in combination with theoretical investigations to determine the dependence of the amplitude and phase noise as functions of device parameters and operating conditions. Subsequently strategies for reducing these noises will be formulated. Ultimately, low-noise optical CCO's will be inserted in microwave fiber-optic links as well as SCM and WDM-SCM multi-access fiber-optic networks. ***

罗切斯特理工学院电气工程系将购买相位和振幅测量系统，该系统将专门用于支持工程研究。该设备将用于几个研究项目，具体包括：1。一种用于天线远程和相控阵的新型调频微波光纤链路[j]。一种基于短外腔激光二极管的超宽带微波光纤发射机“全光单片机和WDM-SCM多接入网”这些研究项目在利用非线性光学系统的“不稳定性”在光载波上产生微波/毫米波子载波方面有一个关键的创新。具体来说，微波/毫米波子载流子是用光学电流控制振荡器（CCO）产生的，该振荡器系统地利用了固有的非线性动力学，主要是周期轨道的形成。副载波的相位和幅度噪声在很大程度上决定了模拟（数字）链路或通信网络的信噪比（误码率）。所要求的设备将与理论研究结合使用，以确定振幅和相位噪声作为设备参数和操作条件的函数的依赖关系。随后将制定减少这些噪音的策略。最终，低噪声光CCO将被插入到微波光纤链路以及单片机和WDM-SCM多址光纤网络中。＊＊＊