韩秀友

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

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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.