[13] WANG Y L, ZHANG C L. Research on the modulation format of 40Gb/s WDM-PON system[J]. MATEC Web of Conferences, 2022, 355: 2-5.
[14] ZUBAIDA A S, SUBROTO K D N, NILOY S. Demonstration of a 4 Gb/s wavelength division multiplexing based Li-Fi network[C]//IEEE. International Conference on Electronics, Communications and Information Technology, Khulna: IEEE, 2022: 2-4.
[15] YEH C H, CHOW C W， HSU C H, et al. 40-Gb/s time-division-multiplexed passive optical networks using downstream OOK and upstream OFDM modulations [J]. IEEE Photonics Technology Letters, 2010, 22（2）:118-120.
