Chirped-pulse-based broadband RF channelization implemented by a mode-locked laser and dispersion

被引：41

作者：

Hao, Wenhui ^{[1
]}

Dai, Yitang ^{[1
]}

Yin, Feifei ^{[1
]}

Zhou, Yue ^{[1
]}

Li, Jianqiang ^{[1
]}

Dai, Jian ^{[1
]}

Li, Wangzhe ^{[2
]}

Xu, Kun ^{[1
,3
]}

机构：

[1] BUPT, State Key Lab Informat Photon & Opt Commun, POB 55, Beijing 100876, Peoples R China

[2] Chinese Acad Sci, Inst Elect, Natl Key Lab Microwave Imaging Technol, Beijing 100190, Peoples R China

[3] Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China

来源：

OPTICS LETTERS | 2017年 / 42卷 / 24期

基金：

中国国家自然科学基金;

关键词：

MICROWAVE PHOTONICS; TRANSFORMATION; RECEIVER;

D O I：

10.1364/OL.42.005234

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Based on chirped pulses, a wideband radio frequency (RF) channelized receiver that can easily support hundreds of channels is proposed. The mixing chirped pulses and its own delayed copy produces an equivalent RF local oscillation (LO). The LO frequency can be changed by simply setting the delay between the two paths. Channelized receiving of broadband RF signals can be realized by parallel delay line arrays. Meanwhile, the use of in-phase/quadrature demodulation avoids the extra optical or electrical filtering as well as image interference. A receiver with channel spacing of 100 MHz, covering the spectrum from DC to 18.4 GHz is experimentally demonstrated. The performances, including signal-to-noise ratio, frequency response, spurious-free dynamic range, and image rejection, are analyzed. (C) 2017 Optical Society of America

引用

页码：5234 / 5237

页数：4

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