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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Head, Photonics Research Center,
其他任职：辽宁省先进光电子技术重点实验室 主任
性别：男
毕业院校：比利时根特大学
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
办公地点：光仪学院厚望楼405
联系方式：Tel：0411 84706491
电子邮箱：mszhao@dlut.edu.cn
Photonic approach to broadband instantaneous microwave frequency measurement with improved accuracy
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论文类型：期刊论文
发表时间：2014-10-01
发表刊物：OPTICS COMMUNICATIONS
收录刊物：SCIE、EI、Scopus
卷号：328
页面范围：87-90
ISSN号：0030-4018
关键字：Microwave frequency measurement; Amplitude comparison function; Microwave photonics
摘要：A photonic approach for instantaneous microwave frequency measurement over a wide bandwidth is proposed and experimentally demonstrated based on the fading effect of the fiber. In this scheme, three lights with different wavelengths and three sections of optical fiber are used to construct the frequency-dependent amplitude comparison functions (ACFs), using a phase modulation along with an intensity modulation. The unknown microwave frequency can be determined from the intersection of three ACFs. The method can not only provide extended measurable range of the microwave frequency, but also improve the accuracy by choosing an ACF with a large slope. The measurement errors as demonstrated in the experimental results are within +/- 90 MHz in the frequency range of 0.5-20 GHz. (C) 2014 Elsevier B.V. All rights reserved.