Novel photonic broadband microwave frequency measurement based on intensity-modulated link with output microwave interference detection

被引：5
作者：
Gu, Yiying [1 ]
Hu, Jingjing [1 ,2 ]
Li, Shanfeng [1 ]
Han, Xiuyou [1 ]
Wang, Meng [1 ]
Wu, Pengsheng [1 ]
Zhao, Mingshan [1 ]
机构：
[1] Dalian Univ Technol, Photon Res Ctr, Dalian 116024, Peoples R China
[2] Univ Kent, Broadband & Wireless Commun Grp, Canterbury, Kent, England
来源：
OPTICAL ENGINEERING | 2012年 / 51卷 / 01期
基金：
中国国家自然科学基金;
关键词：
microwave photonics; microwave frequency measurement; fiber dispersion; MEASUREMENT SYSTEM;
D O I：
10.1117/1.OE.51.1.019001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel photonic approach for measuring microwave frequency over a wide bandwidth, based on intensity-modulated link with output microwave interference detection, is proposed. In this simple measurement system, a tunable laser and a fixed-wavelength laser are used with a single-mode fiber as the dispersive medium. By scanning the wavelength of a tunable laser, the frequency of the modulated microwave signal can be obtained directly through analyzing the interference intensity of the microwave signal at the output of the photodetector. The proposed approach is demonstrated experimentally by obtaining the unknown microwave frequency in the range of 1 to 20 GHz with a measurement accuracy of several tens of MHz. (C) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.1.019001]
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页数：4
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