|
个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：光电工程与仪器科学学院副院长
性别：男
毕业院校：中国科学院上海光学精密机械研究所
学位：博士
所在单位：光电工程与仪器科学学院
学科：光学工程. 测试计量技术及仪器. 通信与信息系统
联系方式：电话：0411-84706251
电子邮箱：xyhan@dlut.edu.cn
Optical approach for measuring unknown microwave frequency with improved sensitivity
点击次数：
论文类型：期刊论文
发表时间：2013-02-01
发表刊物：OPTICAL ENGINEERING
收录刊物：SCIE
卷号：52
期号：2
ISSN号：0091-3286
关键字：microwave frequency measurement; microwave photonics; optical delay line; tunable dispersive medium
摘要：We propose a novel photonic technique for unknown microwave frequency measurement by employing an optical group delay line. The 7-bit optical delay line composed of several magneto-optical switches and 1.6 km single-mode fiber is designed as a tunable dispersive medium in the measurement system. In our scheme, the measurable frequency range of 1 to 20 GHz with a measurement error less than +/-40 MHz was demonstrated experimentally. Also, we studied the sensitivity of the whole measurement system, and the minimum detectable power reached -50 dBm. (C) 2013 Society of Photo-Optical Instrumentation Engineers (SPIE) [DOI: 10.1117/1.OE.52.2.025002]