[1] WANG W T, LIU J G, MEI H K, et al. Widely tunable photonic-assisted microwave phase shifter based on single polarization multiplexing electro-optic modulator[J]. IEEE Photonics Journal, 2016, 8(6):1-8.
[2] WANG X D, ZHANG J L, CHAN E H W, et al. Ultra-wide bandwidth photonic microwave phase shifter with amplitude control function[J]. Optics Express, 2017, 25(3):2883-2894. doi: 10.1364/OE.25.002883
[3] WANG X, NIU T, CHAN E H W, et al.Photonics-based wideband microwave phase shifter[J]. IEEE Photonics Journal, 2017, 9(3): 5501710.
[4] NIU T, WANG X, CHAN E H W, et al. Dual-polarization dual-parallel MZM and optical phase shifter based microwave photonic phase controller[J]. IEEE Photonics Journal, 2016, 8(4):5501114.
[5] NIU T, CHAN E H W, WANG X, et al. Broadband dual-polarization dual-parallel Mach-Zehnder modulator based photonic microwave phase shifter[C]//Optoelectronics and Communications Conference. New York, USA: IEEE, 2016: 1-3.
[6] LI T, CHAN E H W, WANG X, et al. All-optical photonic microwave phase shifter requiring only a single DC voltage control[J]. IEEE Photonics Journal, 2016, 8(4):5501008.
[7] CHAN E H W, ZHNAG W W, MINASIAN R A. Photonic RF phase shifter based on optical carrier and RF modulation sidebands amplitude and phase control[J]. Journal of Lightwave Technology, 2012, 30(23):3672-3678. doi: 10.1109/JLT.2012.2224093
[8] YAO J, LI W, ZHANG W. An ultra wideband 360° photonic assisted microwave phase shifter[C]//Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference. New York, USA: IEEE, 2013: 1-3.
[9] WANG W, SUN W, WANG W, et al. A wideband photonic microwave phase shifter using polarization-dependent intensity modulation[J]. Optics Communications, 2015, 356:522-525. doi: 10.1016/j.optcom.2015.08.045
[10] PENG Z, WEN A, GAO Y, et al. A tunable and wideband microwave photonic phase shifter based on dual-polarization modulator[J]. Optics Communications, 2017, 382:377-380. doi: 10.1016/j.optcom.2016.08.006
[11] CHEN Y. A wideband photonic microwave phase shifter with 360 degree phase tunable range based on a DP-QPSK modulator[J]. Optics Communications, 2018, 410:787-792. doi: 10.1016/j.optcom.2017.11.041
[12] ZHAI W Sh, GAO X L, XU W J, et al. Microwave photonic phase shifter with spectral separation processing using a linear chirped fiber Bragg grating[J]. Chinese Optics Letters, 2016, 14(4):16-19.
[13] YANG J, CHAN E H W, WANG X, et al. High output RF signal power photonic microwave phase shifter with amplitude and phase control functions[C]//International Conference on Optical Communications and Networks. New York, USA: IEEE, 2015: 1-3.
[14] XUE W, SALES S, CAPMANY J, et al. Wideband 360 degrees microwave photonic phase shifter based on slow light in semiconductor optical amplifiers[J]. Optics Express, 2010, 18(6):6156-6163. doi: 10.1364/OE.18.006156
[15] SANCHO J, LLORET J, GASULLA I, et al. Fully tunable 360° microwave photonic phase shifter based on a single semiconductor optical amplifier[J]. Optics Express, 2011, 19(18):17421-17426. doi: 10.1364/OE.19.017421
[16] LOAYSSA A, LAHOZ F J. Broad-band RF photonic phase shifter based on stimulated brillouin scattering and single-sideband modulation[J]. IEEE Photonics Technology Letters, 2005, 18(1):208-210.
[17] LI W, ZHU N H, WANG L X. Photonic phase shifter based on wavelength dependence of brillouin frequency shift[J]. IEEE Photonics Technology Letters, 2011, 23(14):1013-1015. doi: 10.1109/LPT.2011.2151279
[18] WANG Ch Y. Photonic microwave phase shifter based on silicon microring[D]. Wuhan: Huazhong University of Science and Technology, 2013: 15-16(in Chinese).
[19] XU D. Research on tunable microwave photonic filter based on phase modulation[D]. Tianjin: Tianjing University of Technology, 2017: 20-21(in Chinese).