Generation of multi-band reconfigurable microwave waveforms based on dual-chirped fiber combs

Wenhao Xiong; Chuanfei Yao; Pingxue Li; Feiyu Zhu; Ruonan Lei

doi:10.1117/12.2666304

21 March 2023 Generation of multi-band reconfigurable microwave waveforms based on dual-chirped fiber combs

Wenhao Xiong, Chuanfei Yao, Pingxue Li, Feiyu Zhu, Ruonan Lei

Proceedings Volume 12595, Advanced Fiber Laser Conference (AFL2022); 1259502 (2023) https://doi.org/10.1117/12.2666304
Event: Advanced Fiber Laser Conference (AFL2022), 2022, Changsha, China

Abstract

A scheme for the photonic generation of Multi-band Reconfigurable Microwave Waveforms (MRMWs) is proposed and demonstrated based on dual-correlated chirped fiber combs. In the proposed system, the output of master laser is split into two paths, and then respectively coupled with another a single-frequency fiber laser and amplified for the generation of dual combs, which also acts as the reference frequency. During various formats wavelength sweeping operation, one of the single-frequency lasers can flexibly manipulate the repetition-rate difference of the dual-comb. Meanwhile, the chirp from a pump laser is transferred to all spectral comb teeth through the intra-cavity cascaded four-wave mixing process at once. After optical filtering, by beating the paired comb lines of the same order at a high-speed photodetector (PD), the bandwidth, central frequency and repetition rate of the chirped microwave waveforms are obtained. This system has a compact structure without electro-optical modulators and takes into account mutual coherence.

Citation Download Citation

Wenhao Xiong, Chuanfei Yao, Pingxue Li, Feiyu Zhu, and Ruonan Lei "Generation of multi-band reconfigurable microwave waveforms based on dual-chirped fiber combs", Proc. SPIE 12595, Advanced Fiber Laser Conference (AFL2022), 1259502 (21 March 2023); https://doi.org/10.1117/12.2666304

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KEYWORDS

Microwave radiation

Fiber lasers

Frequency combs

Optical filters

Radio optics

Microwave photonics

Optical coherence

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