Detection of low-power RF signals using active mode-locking based coupled optoelectronic oscillator

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2024-11-27 DOI:10.1016/j.yofte.2024.104040

Deqi Li , Jiahui Zou , Tiantong Zhao , Qianpu Zhao , Baoqun Li , Shutong Liu , Hongbo Lou , Junda Chen , Tianshu Wang

引用次数: 0

Abstract

A novel method to detect and amplify broadband low power radio frequency (RF) signal with high gain based on coupled optoelectronic oscillator (COEO) is proposed and experimentally demonstrated. When the frequency of the weak signal matches the COEO oscillation mode, it can obtain the high gain of active mode-locking in the COEO optical loop. The system can selectively detect and amplify RF signals from 1 to 10 GHz by observing the optical pulse repetition rate state. The experimental results show that sensitivity of detection as low as −89 dBm with a maximum gain of 34.32 dB at 1.002 GHz, and an average gain of 30.52 dB for low power RF signals. The real application of the method for detecting low power Quadrature Phase Shift Keying (QPSK) modulation is investigated and the spectral waveforms is discussed.

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利用基于有源模式锁定的耦合光电振荡器检测低功率射频信号

本文提出了一种基于耦合光电振荡器（COEO）的高增益检测和放大宽带低功率射频（RF）信号的新方法，并进行了实验演示。当微弱信号的频率与 COEO 振荡模式相匹配时，可在 COEO 光环中获得主动锁模的高增益。该系统可通过观察光脉冲重复率状态，选择性地检测和放大 1 至 10 GHz 的射频信号。实验结果表明，检测灵敏度低至 -89 dBm，在 1.002 GHz 时的最大增益为 34.32 dB，低功率射频信号的平均增益为 30.52 dB。研究了该方法在检测低功率正交相移键控（QPSK）调制中的实际应用，并讨论了频谱波形。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.