任意波形发生器
物理
相位调制
调制(音乐)
解复用器
材料科学
超短脉冲
信号处理
信号(编程语言)
作者
Chongyin Yi,Yang Shuna,Bo Yang,Tao Jin,Hao Chi
出处
期刊:Optics Letters
[The Optical Society]
日期:2021-04-01
卷期号:46 (7): 1578-1581
被引量:2
摘要
A novel photonic approach for generating switchable multi-format chirp RF waveforms is proposed and experimentally demonstrated. The key component in the scheme is a dual-parallel Mach-Zehnder modulator (DPMZM). By properly setting the bias voltage on the DPMZM, different chirp RF waveforms with a doubled bandwidth, including the dual-, up-, and down-chirp waveforms, can be generated, when an unmodulated RF signal and a chirp RF signal are injected. The experiments are implemented to demonstrate the generation of switchable chirp waveforms with bandwidths of 2 and 0.8 GHz. The proposed scheme features its compact structure, easiness in switching control, as well as bandwidth doubling, which has potential applications in multifunctional radars.
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