Photonic Real-time Fourier Transform Based on Frequency Stretching of RF Signals

被引：0

作者：

Ding, Jiewen ^{[1
]}

Zhu, Dan ^{[1
]}

Wang, Zihao ^{[1
]}

Zhang, Bowen ^{[1
]}

Lu, Tao ^{[1
]}

Pan, Shilong ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Elect & Informat Engn, Naning, Peoples R China

来源：

2021 INTERNATIONAL TOPICAL MEETING ON MICROWAVE PHOTONICS (MWP) | 2021年

基金：

中国国家自然科学基金;

关键词：

real-time Fourier transform; microwave photonics; frequency stretching;

D O I：

10.1109/MWP53341.2021.9639387

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A photonic real-time Fourier transform (PRTFT) based on frequency stretching of RF signals is proposed and experimentally demonstrated. By using the +/- 2nd sideband modulation of DPMZM, the frequencies of RF signals are stretched. Since the frequency-to-time mapping (FTM) is a linear mapping, the mapped signal is time stretched equivalently. As a result, the frequency resolution is enhanced with the time stretching of the mapped signal, without increasing the 2nd dispersion value of the dispersive media used for FTM. The PRTFT of RF signals has been achieved experimentally within the frequency range of 2-32 GHz. The frequency resolution has been enhanced to 70 MHz for the two-tone RF signals.

引用

页数：3

共 8 条

[1] Agrawal G.P., 2001, Nonlinear fibre optics, V3rd
[2] Hansen E.W., 2014, Fourier transforms: principles and applications
[3] REAL-TIME FOURIER TRANSFORMATION IN DISPERSIVE OPTICAL FIBERS
JANNSON, T
[J]. OPTICS LETTERS, 1983, 8 (04) : 232 - 234
[4] Demonstration of a microwave spectrum analyzer based on time-domain optical processing in fiber
Saperstein, RE
Panasenko, D
Fainman, Y
[J]. OPTICS LETTERS, 2004, 29 (05) : 501 - 503
[5] Dispersive Fourier Transformation for Versatile Microwave Photonics Applications
Wang, Chao
[J]. PHOTONICS, 2014, 1 (04): : 586 - 612
[6] Impact of Dispersion Effects on Temporal-Convolution-Based Real-Time Fourier Transformation Systems
Zhang, Bowen
Zhu, Dan
Lei, Zhen
Xu, Zhongyang
Zhou, Tao
Zhong, Xin
Chen, Zhiyu
Pan, Shilong
[J]. JOURNAL OF LIGHTWAVE TECHNOLOGY, 2020, 38 (17) : 4664 - 4676
[7] Real-time Fourier transformation based on the bandwidth magnification of RF signals
Zheng, Yan
Li, Jilong
Dai, Yitang
Yin, Feifei
Xu, Kun
[J]. OPTICS LETTERS, 2018, 43 (02) : 194 - 197
[8] Broadband Cognitive Radio Enabled by Photonics
Zhu, Dan
Pan, Shilong
[J]. JOURNAL OF LIGHTWAVE TECHNOLOGY, 2020, 38 (12) : 3076 - 3088

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