RF signal detection by a tunable optoelectronic oscillator based on a PS-FBG.
RF signal detection by a tunable optoelectronic oscillator based on a PS-FBG.
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DOI：
10.1364/ol.43.001199
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发表时间：
2018-03
期刊：
影响因子：
3.6
通讯作者：
Yuchen Shao;Xiuyou Han;Ming Li;Mingshan Zhao
中科院分区：
文献类型：
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作者：
Yuchen Shao;Xiuyou Han;Ming Li;Mingshan Zhao
低功率射频（RF）信号检测对于从无线通信到雷达系统的许多应用都是非常理想的。提出了一种基于移相光纤光栅的可调谐光电振荡器（OEO），并进行了实验验证。当输入射频信号的频率与OEO的电位振荡模式匹配时，对其进行检测和放大。通过扫描激光源的波长，可以同时估计被测射频信号的频率。在1.5 ~ 5 GHz范围内检测到低至-91 dBm的射频信号，增益约为10 dB，估计频率误差为±100 MHz。研究了OEO系统对不同调制速率的射频信号的检测性能。
Low-power radio frequency (RF) signal detection is highly desirable for many applications, ranging from wireless communication to radar systems. A tunable optoelectronic oscillator (OEO) based on a phase-shifted fiber Bragg grating for detecting low-power RF signals is proposed and experimentally demonstrated. When the frequency of the input RF signal is matched with the potential oscillation mode of the OEO, it is detected and amplified. The frequency of the RF signal under detection can be estimated simultaneously by scanning the wavelength of the laser source. The RF signals from 1.5 to 5 GHz as low as -91 dBm are detected with a gain of about 10 dB, and the frequency is estimated with an error of ±100 MHz. The performance of the OEO system for detecting an RF signal with different modulation rates is also investigated.