期刊
OPTICS LETTERS
卷 45, 期 7, 页码 1990-1993出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.389694
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资金
- National Natural Science Foundation of China [61860206006, 61922069]
- Ministry of Education United Foundation of Equipment Pre-Research [6141A020334]
- 111 Plan [B18045]
A photonic approach to generate switchable down-, up-, and dual-chirped linear frequency-modulated (LFM) microwave signals utilizing a dual-polarization dual-parallel Mach-Zehnd.er modulator (DP-DPMZM) is proposed. and experimentally demonstrated. By properly controlling the radio frequency signals and baseband LFM signals applied to the DP-DPMZM, switchable down-, up-, and dual-chirped LFM microwave signals with a tunable center frequency and chirp rate can be obtained. Experimental results show that switchable down-, up-, and dual-chirped. LFM signals with a center frequency of 5 GHz and chirp rate of 1 GHz/4 mu s are generated. In addition, the tunability of the center frequency and chirp rate of the generated microwave signals are also demonstrated. (C) 2020 Optical Society of America
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