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A photonic approach to generate triangular frequency modulated microwave waveform (TFMMW) using frequency-scanning (FS) laser and dual-output dual-parallel Mach-Zehnder modulator (DO-DPMZM) is proposed and demonstrated. In the scheme, a DO-DPMZM followed by a time delayer and a polarization beam combiner is utilized to generate orthogonally polarized -1rst-order sideband and +1rst-order sideband with time delay. After that, a TFMMW with large time-bandwidth product (TBWP) can be generated by photoelectric balanced detection. In the simulation experiments, Ka band TFMMW with TBWP of 9830.4 is generated and its ambiguity function is investigated
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Xiong Luo, Lan Yu, Jin Zhang, Jianghai Wo, Anle Wang, Shirui Du, Yalan Wang, "Triangular frequency modulated microwave waveform generation with large time-bandwidth product using frequency-scanning laser," Proc. SPIE 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications, 117636K (12 March 2021); https://doi.org/10.1117/12.2587366