Paper
13 December 2024 Photonic generation of bandwidth-multiplying dual-chirp microwave waveforms with flexibly tunable central frequency
Author Affiliations +
Proceedings Volume 13502, AOPC 2024: AI in Optics and Photonics; 1350206 (2024) https://doi.org/10.1117/12.3046409
Event: Applied Optics and Photonics China 2024 (AOPC2024), 2024, Beijing, China
Abstract
A photonic approach to generate dual-chirp microwave waveform based on an improved optical frequency operation module (OFOM) is proposed and experimentally demonstrated. Without altering the existing OFOM architecture and only by expanding optical filtering and setting appropriate input radio-frequency (RF) signal parameters, two optical sidebands with opposite chirp characteristics will overlap in the frequency domain. After photodetection, a dual-chirp microwave waveform with tunable central frequency and multiplying bandwidth can be generated. Experimentally, dual-chirp signals at 13.2GHz with a tunable bandwidth from 60 MHz to 6 GHz are generated. The pulse compression ratio (PCR) and the peak-to-sidelobe ratio (PSR) of the generated signals are evaluated. In addition, the tunability of the central frequency is also investigated, which verifies the feasibility of the proposed scheme.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Xiaotong Liu, Shuo Yu, Anle Wang, Hongyi Wang, Jin Zhang, and Dangwei Wang "Photonic generation of bandwidth-multiplying dual-chirp microwave waveforms with flexibly tunable central frequency", Proc. SPIE 13502, AOPC 2024: AI in Optics and Photonics, 1350206 (13 December 2024); https://doi.org/10.1117/12.3046409
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KEYWORDS
Microwave radiation

Signal generators

Optical filters

Pulse signals

Radio optics

Bandpass filters

Electronic filtering

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