[1] [1] ZHENG Zhi-wei, PENG Miao, ZHOU Hui, et al. Optical single sideband millimeter-wave signal generation and transmission using 120° hybrid coupler［J］. Optics Communications, 2018, 411: 21-26.

[2] [2] MA Jian-xin, YU J, YU Chong-xiu, et al. Fiber dispersion influence on transmission of the optical millimeter-waves generated using ln-mzm intensity modulation［J］. Journal of Lightwave Technology, 2007, 25(11): 3244-3256.

[3] [3] NAMITA K, KUMAR G A, Performance analysis of radio over fiber system using direct and external modulation schemes［J］. International Journal of Scientific & Engineering Research, 2017, 8(4): 172-175.

[4] [4] TAN Zhi-ying. Research on adaptive bias voltage control technique for Mach-Zehnder modulator［D］. Wuhan: Huazhong University of Sience& Technology, 2016: 13-26.

[5] [5] HAO Chong-zheng, LI Hong-zuo, SUN Quan, et al. Stable bias control technique for any-point locking in Mach-Zehnder modulator［J］. Acta Photonica Sinica, 2017, 46(10): 1023002.

[6] [6] CHEN Hong-yao, NING Ti-gang, LI Jing, et al. Optical millimeter-wave generation with tunable multiplication factors and reduced power fluctuation by using cascaded modulators［J］. Optics & Laser Technology, 2018, 103: 206-211.

[7] [7] ZHU Zi-hang, ZHAO Shang-hong, TAN Qing-gui, et al. Photonically assisted microwave signal generation based on two cascaded polarization modulators with a tunable multiplication factor［J］. IEEE Transactions on Microwave Theory and Techniques, 2016, 64(11): 3748-3756.

[8] [8] ZHANG Wu, WEN Ai-jun, GAO Yong-sheng, et al. A simplified filterless photonic frequency octupling scheme based on cascaded modulators［J］. Journal of Modern Optics, 2017, 64(8): 861-865.

[9] [9] LIU Jing, WEN Ai-jun, ZHANG Hui-xing, et al. A novel mi-insensitive and filterless frequency octupling scheme based on two parallel dual-parallel mach-zehnder modulators［J］. Optik, 2014, 125(23): 6887-6890.

[10] [10] CHEN Yang, WEN Ai-jun, GUO Jing-jing, et al. A novel optical mm-wave generation scheme based on three parallel mach-zehnder modulators［J］. Optics Communications, 2011, 284(5): 1159-1169.

[11] [11] WANG Yi-qun, PEI Li, LI Jing, et al. Millimeter-wave signal generation with tunable frequency multiplication factor by employing ufbg-based acousto-optic tunable filter［J］. IEEE Photonics Journal, 2017, 9(1): 1-10.

[12] [12] XU Wen-jing, GAO Xin-lu, ZHAO Ming-yang, et al. Full duplex radio over fiber system with frequency quadrupled millimeter-wave signal generation based on polarization multiplexing［J］. Optics & Laser Technology, 2018, 103: 267-271.

[13] [13] PEI Jun, YU Dong-xiu, MA Jian-xin,et al. Research on millimeter wave generation method in Rof system［J］. Cable Television Technology, 2007, 14(9): 45-48.

[14] [14] YU Jian-jun, JIA Zhen-sheng, YI Li-lin, et al. Optical millimeter-wave generation or up-conversion using external modulators［J］. IEEE Photonics Technology Letters, 2006, 18(1): 265-267.

[15] [15] MA Jian-xin, YU Jian-jun, YU Chong-xiu, et al. Transmission performance of the optical mm-wave generated by double-sideband intensity-modulation［J］. Optics Communications, 2007, 280(2): 317-326.

[16] [16] MA Jian-xin, YU Chong-xiu, ZHOU Zhen, et al. Optical mm-wave generation by using external modulator based on optical carrier suppression［J］. Optics Communications, 2006, 268(1): 51-57.

[17] [17] WANG Yi-qun, PEI Li, LI Jing, et al. Study on dispersion characteristic of different code data transmission pulses in OSSB-RoF system［J］. Optical and Quantum Electronics, 2016, 48(9): 426.