[1] Khan M H, Shen H, Xuan Y et al. Ultrabroad-bandwidth arbitrary radiofrequency waveform generation with a silicon photonic chip-based spectral shaper[J]. Nature Photonics, 4, 117-122(2010).

[2] Yuan M Y, Liu B, Wang T L et al. Sawtooth waveform generation based on two parallel Mach-Zehnder modulators[J]. Laser & Optoelectronics Progress, 55, 070701(2018).

[3] Wu T W, Jiang Y, Zi Y J et al. Research on microwave triangular signal generation by using polarization orthogonalied optical time-domain synthesis[J]. Journal of Guizhou University (Natural Sciences), 33, 52-56(2016).

[4] Zhang K, Zhao S H, Wen A J et al. Anti-chromatic dispersion transmission of frequency and bandwidth-doubling dual-chirp microwave waveform[J]. Optics Letters, 44, 4004-4007(2019).

[5] Yang C. Photonic generation and transmission of triangular and square waveforms with a large repetition rate tunable range[J]. Journal of Lightwave Technology, 36, 3293-3301(2018).

[6] He Y T, Jiang Y, Zi Y J et al. Frequency doubled triangular waveform generation based on injection locking and time-domain synthesis[J]. Chinese Journal of Lasers, 45, 0101005(2018).

[7] Gao Y S, Wen A J, Zheng H X et al. Photonic microwave waveform generation based on phase modulation and tunable dispersion[J]. Optics Express, 24, 12524-1533(2016).

[8] Dai B, Gao Z S, Wang X et al. Generation of versatile waveforms from CW light using a dual-drive Mach-Zehnder modulator and employing chromatic dispersion[J]. Journal of Lightwave Technology, 31, 145-151(2013).

[9] Zhai W L, Wen A J, Shan D J. Photonic generation and transmission of frequency-doubled triangular and square waveforms based on two Mach-Zehnder modulators and a Sagnac loop[J]. Journal of Lightwave Technology, 37, 1937-1945(2019).

[10] Teng Y C, Chen Y W, Zhang B F et al. Photonic generation of frequency-decupled microwave signal based on cascaded Mach-Zehnder modulators[J]. Optik, 127, 9275-9279(2016).

[11] Li W, Wang W T, Zhu N H. Photonic generation of radio-frequency waveforms based on dual-parallel Mach-Zehnder modulator[J]. IEEE Photonics Journal, 6, 1-8(2014).

[12] Zhu S, Wang X, Li M et al. A simple photonic method to generate square and triangular microwave waveforms[J]. Optics Communications, 426, 654-657(2018).

[13] Sun Y Y, Bai G F, Hu L. Triangular photonic microwave-signal generation based on dual-parallel Mach-Zehnder modulator and influence factors of its similarity[J]. Laser & Optoelectronics Progress, 56, 110602(2019).

[14] Xiao J B, Wen A J, Zhang H X et al. Generation of triangular-shaped waveform with frequency doubling[J]. IEEE Photonics Technology Letters, 29, 1599-1602(2017).

[15] Rohling H, Meinecke M M. Waveform design principles for automotive radar systems[C]∥2001 CIE International Conference on Radar Proceedings (Cat No.01TH8559), October 15-18, 2001, Beijing, China., 7320984(2001).

[16] Zhang F, Li P L, Liu Y et al. High-performance microwave frequency comb based on cascaded MZM optical loop[J]. Chinese Journal of Lasers, 46, 1101006(2019).

[17] Zhang Y M, Zhang F Z, Pan S L. Generation of frequency-multiplied and phase-coded signal using an optical polarization division multiplexing modulator[J]. IEEE Transactions on Microwave Theory and Techniques, 65, 651-660(2017).

[18] Zhu Z H, Zhao S H, Li X et al. Frequency-doubled microwave waveforms generation using a dual-polarization quadrature phase shift keying modulator driven by a single frequency radio frequency signal[J]. Optics & Laser Technology, 98, 397-403(2018).

[19] Zhang K, Zhao S H, Li X et al. Reconfigurable photonic generation of background-free microwave waveforms with multi-format[J]. Optics Communications, 453, 124326(2019).