微波食品加热
光学
色散(光学)
材料科学
带宽(计算)
光电子学
物理
电信
计算机科学
量子力学
作者
Jilong Li,Songnian Fu,Xiangzhi Xie,Meng Xiang,Feifei Yin,Yitang Dai,Yuwen Qin
出处
期刊:Optics Letters
[The Optical Society]
日期:2022-02-17
卷期号:47 (5): 1057-1057
被引量:3
摘要
Tunable microwave dispersion is highly desired for a wide field of microwave signal processing. However, a conventional microwave dispersive delay line usually suffers from either a small dispersion value or a narrow operation bandwidth. Here, we experimentally demonstrate the optically magnified dispersion of a microwave signal with a wide and flexible tunable range, based on a bandwidth-scaling microwave photonic system. The obtained microwave dispersion can therefore be magnified from the corresponding optical dispersion with a magnification factor that can be continuously tuned from 10,000 to 85,000. Meanwhile, a proof-of-concept experiment that includes both compression and stretching of chirped microwave pulses is reported. Microwave dispersion from 1.34 ns/GHz to 10.92 ns/GHz can be secured by the corresponding magnification of an optical dispersion value of 16 ps/nm.
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