[1] [1] DAT P T,YAMAGUCHI Y,MOTOYA M,et al.Transparent fiber-millimeter-wave-fiber system in 100-GHz band using optical modulator and photonic down-conversion[J].Journal of Lightwave Technology,2022,40(5):1483-1493.

[2] [2] HAN M Y,WANG M G,ZHANG N H,et al.A photonic-assisted crosstalk cancellation for twin-SSB radio over fiber transmission[J].IEEE Communications Letters,2022,26(1):104-108.

[3] [3] PERINI F,RUSTICELLI S,SCHIAFFINO M,et al.Radio frequency over fiber technology for SKA-low receiver [J].Journal of Astronomical Telescopes Instruments and Systems,2022,8(1): 011016.

[4] [4] KURI T, KITAYAMA K. Optical heterodyne detection tec- hnique for densely multiplexed millimeter-wave-band radio-on-fiber systems[J].Journal of Lightwave Technology,2003,21(12):3167-3179.

[5] [5] KANNO A.Millimeter-wave communication system implemented on radio over fiber networks in 5G/IoT era ［C］ //IEEE Conference on Antenna Measurements & Applications (CAMA),September 3-6,2018,Vasteras,Sweden.New York: IEEE,2018:8530511.

[6] [6] MATHEW S,WELKER T,SPIRA S,et al.A radio-over-fiber link with hybrid optical fiber-ceramic multilayer technology［C］ //48th European Microwave Conference (EuMC),September 25-27,2018,Madrid,Spain.New York:IEEE,2018:789-792.

[7] [7] UMEZAWA T,DAT P T,KASHIMA K,et al.100-GHz radio and power over fiber transmission through multicore fiber using optical-to-radio converter[J].Journal of Lightwave Technology,2018,36(2):617-623.

[8] [8] GOWDA A S,DHAINI A R,KAZOVSKY L G,et al.Towards green optical/wireless in-building networks:radio-over-fiber[J].Journal of Lightwave Technology,2014,32(20):3545-3556.

[9] [9] ZHANG H Z,CAI L,XIE S X,et al.A novel radio-over-fiber system based on carrier suppressed frequency eightfold millimeter wave generation[J].IEEE Photonics Journal,2017,9(5):1-8.

[10] [10] ZHOU H,FEI C Y,ZENG Y T,et al.A RoF system based on 18-tuple frequency millimeter wave generation using external modulator and SOA[J].Optical Fiber Technology,2021,61:102402.

[11] [11] CHEN H Y,NING T G,LI J,et al.Optical millimeter-wave generation with tunable multiplication factors and reduced power fluctuation by using cascaded modulators[J].Optics and Laser Technology,2018,103:206-211.

[12] [12] CHEN J H,LIN C T,SHIH P T,et al.Generation of optical millimeter-wave signals and vector formats using an integrated optical I/Q modulator Invited[J].Journal of Optical Networking,2009,8(2):188-200.

[13] [13] LI J,NING T G,PEI L,et al.Millimeter-wave radio-over-fiber system based on two-step heterodyne technique[J].Optics Letters,2009,34(20):3136-3138.

[14] [14] LANGLEY L N,ELKIN M D,EDGE C,et al.Packaged semiconductor laser optical phase-locked loop (OPLL) for photonic generation,processing and transmission of microwave signals[J].IEEE Transactions on Microwave Theory and Techniques,1999,47(7):1257-1264.

[15] [15] GRIFFIN R A,KITAYAMA K.Optical millimetre-wave generation with high spectral purity using feed-forward optical field modulation [J].Electronics Letters,1998,34(8):795-796.