STFT Based on Stabilized Period-One Nonlinear Laser Dynamics and Stimulated Brillouin Scattering

Sunan Zhang; Taixia Shi; Lizhong Jiang; Yang Chen

doi:10.1109/LPT.2024.3486625

STFT Based on Stabilized Period-One Nonlinear Laser Dynamics and Stimulated Brillouin Scattering

Sunan Zhang, Taixia Shi^*, Lizhong Jiang, Yang Chen^*

^*Corresponding author for this work

School of Communication and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

A microwave photonic short-time Fourier transform (STFT) system based on stabilized period-one (P1) nonlinear laser dynamics and stimulated Brillouin scattering (SBS) is proposed. By using an optoelectronic feedback loop, the frequency-sweep optical signal generated by the P1 nonlinear laser dynamics is stabilized, which is further used in conjunction with an optical bandpass filter implemented by SBS to achieve the frequency-to-time mapping of microwave signals and the final STFT. By comparing the results with and without optoelectronic feedback, it is found that the time-frequency diagram of the signal under test (SUT) obtained by STFT is clearer and smoother, and the frequency of the SUT measured in each frequency-sweep period is more accurate. The measurement error is reduced by around 50% under the optimal filter bandwidth.

Original language	English
Pages (from-to)	1421-1424
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	36
Issue number	24
DOIs	https://doi.org/10.1109/LPT.2024.3486625
State	Published - 2024

Keywords

Short-time Fourier transform
microwave frequency measurement
optoelectronic feedback
period-one nonlinear laser dynamics
stimulated Brillouin scattering

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10.1109/LPT.2024.3486625

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title = "STFT Based on Stabilized Period-One Nonlinear Laser Dynamics and Stimulated Brillouin Scattering",

abstract = "A microwave photonic short-time Fourier transform (STFT) system based on stabilized period-one (P1) nonlinear laser dynamics and stimulated Brillouin scattering (SBS) is proposed. By using an optoelectronic feedback loop, the frequency-sweep optical signal generated by the P1 nonlinear laser dynamics is stabilized, which is further used in conjunction with an optical bandpass filter implemented by SBS to achieve the frequency-to-time mapping of microwave signals and the final STFT. By comparing the results with and without optoelectronic feedback, it is found that the time-frequency diagram of the signal under test (SUT) obtained by STFT is clearer and smoother, and the frequency of the SUT measured in each frequency-sweep period is more accurate. The measurement error is reduced by around 50\% under the optimal filter bandwidth.",

keywords = "Short-time Fourier transform, microwave frequency measurement, optoelectronic feedback, period-one nonlinear laser dynamics, stimulated Brillouin scattering",

author = "Sunan Zhang and Taixia Shi and Lizhong Jiang and Yang Chen",

note = "Publisher Copyright: {\textcopyright} 1989-2012 IEEE.",

year = "2024",

doi = "10.1109/LPT.2024.3486625",

language = "英语",

volume = "36",

pages = "1421--1424",

journal = "IEEE Photonics Technology Letters",

issn = "1041-1135",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "24",

}

TY - JOUR

T1 - STFT Based on Stabilized Period-One Nonlinear Laser Dynamics and Stimulated Brillouin Scattering

AU - Zhang, Sunan

AU - Shi, Taixia

AU - Jiang, Lizhong

AU - Chen, Yang

PY - 2024

Y1 - 2024

N2 - A microwave photonic short-time Fourier transform (STFT) system based on stabilized period-one (P1) nonlinear laser dynamics and stimulated Brillouin scattering (SBS) is proposed. By using an optoelectronic feedback loop, the frequency-sweep optical signal generated by the P1 nonlinear laser dynamics is stabilized, which is further used in conjunction with an optical bandpass filter implemented by SBS to achieve the frequency-to-time mapping of microwave signals and the final STFT. By comparing the results with and without optoelectronic feedback, it is found that the time-frequency diagram of the signal under test (SUT) obtained by STFT is clearer and smoother, and the frequency of the SUT measured in each frequency-sweep period is more accurate. The measurement error is reduced by around 50% under the optimal filter bandwidth.

AB - A microwave photonic short-time Fourier transform (STFT) system based on stabilized period-one (P1) nonlinear laser dynamics and stimulated Brillouin scattering (SBS) is proposed. By using an optoelectronic feedback loop, the frequency-sweep optical signal generated by the P1 nonlinear laser dynamics is stabilized, which is further used in conjunction with an optical bandpass filter implemented by SBS to achieve the frequency-to-time mapping of microwave signals and the final STFT. By comparing the results with and without optoelectronic feedback, it is found that the time-frequency diagram of the signal under test (SUT) obtained by STFT is clearer and smoother, and the frequency of the SUT measured in each frequency-sweep period is more accurate. The measurement error is reduced by around 50% under the optimal filter bandwidth.

KW - Short-time Fourier transform

KW - microwave frequency measurement

KW - optoelectronic feedback

KW - period-one nonlinear laser dynamics

KW - stimulated Brillouin scattering

UR - https://www.scopus.com/pages/publications/85208244570

U2 - 10.1109/LPT.2024.3486625

DO - 10.1109/LPT.2024.3486625

M3 - 文章

AN - SCOPUS:85208244570

SN - 1041-1135

VL - 36

SP - 1421

EP - 1424

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

IS - 24

ER -

STFT Based on Stabilized Period-One Nonlinear Laser Dynamics and Stimulated Brillouin Scattering

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Keywords

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