All-optical, ultra-wideband microwave I/Q mixer and image-reject frequency down-converter

被引：48
作者：
Gao, Yongsheng [1 ,2 ]
Wen, Aijun [2 ,3 ]
Chen, Wei [2 ,3 ]
Li, Xiaoyan [2 ,3 ]
机构：
[1] Northwestern Polytech Univ, Sch Elect & Informat, Xian 710072, Peoples R China
[2] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China
[3] Xidian Univ, Collaborat Innovat Ctr Informat Sensing & Underst, Xian 710071, Peoples R China
来源：
OPTICS LETTERS | 2017年 / 42卷 / 06期
基金：
中国国家自然科学基金;
关键词：
PHASE; DOWNCONVERSION; DEMODULATION;
D O I：
10.1364/OL.42.001105
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An all-optical and ultra-wideband microwave in-phase/quadrature (I/Q) mixer, based on a dual-parallel Mach Zehnder modulator and a wavelength division multiplexer, is proposed. Due to the simultaneous frequency downconversion and 360-deg tunable phase shifting in the optical domain, the proposed I/Q mixer has the advantages of high conversion gain and excellent quadrature phase balance (< +/- 1.3 deg) with a wide operating frequency from 10 to 40 GHz. Assisted by an analog or digital intermediate-frequency quadrature coupler, an image-reject frequency down-converter is then implemented, with an image rejection exceeding 50 dB over the working band. (C) 2017 Optical Society of America.
引用
收藏
页码：1105 / 1108
页数：4
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