多路复用器
光学
波分复用
光学滤波器
带宽(计算)
光子学
自由光谱范围
波长
信号(编程语言)
通道间距
光功率
物理
激光器
材料科学
多路复用
电信
计算机科学
程序设计语言
作者
Xiangrui Li,Aijun Wen,Xiaoyang Li,Yinglun Mo,Hao Zhuo
出处
期刊:Applied Optics
[Optica Publishing Group]
日期:2021-08-17
卷期号:60 (27): 8286-8286
被引量:4
摘要
A photonic instantaneous frequency measurement receiver based on frequency to optical power mapping is proposed and experimentally demonstrated. One channel of a dense wavelength-division multiplexer (DWDM) is used as an optical filter to establish a power ratio function related to the frequency of the microwave signal. Different from most optical filters, the DWDM filter features smooth and quasilinear roll-off over a wide bandwidth. With the help of a laser of good wavelength stability and a bias controller, large measurement range and high accuracy are simultaneously achieved without multi-step operation. The instanstaneous frequency measurement receiver can measure the frequency with an accuracy of 0.2% of the signal frequency in the range of 1–40 GHz over 1.5 h in the experiment.
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