Add to BibSonomyAbstract
Discrete multitone (DMT) modulation, due to its water-filling nature, is proposed to enable flexibility in passive optical networks (PONs), optimizing the PON resource usage. The use of DMT signals to directly modulate long-wavelength vertical-cavity surface-emitting lasers (VCSELs) can provide energy-efficient transmitters for 50G PONs. First, we present preliminary experimental measures employing both single-sideband and dual-sideband DMT modulation with already available short-cavity VCSELs operating in the third window to study the PON performance as a function of the accumulated chromatic dispersion and of the received power. The experimental results are then compared with simulations, demonstrating the effectiveness of the developed simulation tool. Then we study the performance of DMT-modulated transmitters based on next-generation short-cavity VCSELs with higher bandwidth (up to 20 GHz) operating in the O-band, evaluating their chromatic dispersion resilience. Finally, considering the statistics of a commercially deployed PON, we demonstrate that DMT modulation, providing link adaptation, offers a significant increase in the total aggregated capacity compared to a single-carrier-based fixed-rate PON, optimizing the PON resource usage with respect to the available power budget and the dispersion impairments.
© 2020 Optical Society of America
Full Article | PDF ArticleMore Like This
Ji Zhou, Jiale He, Xiaofeng Lu, Guanyu Wang, Yu Bo, Gengchen Liu, Yuanda Huang, Liangchuan Li, Chengkun Yang, Haide Wang, Wenxuan Mo, Weiping Liu, Changyuan Yu, and Zhaohui Li
J. Opt. Commun. Netw. 14(11) 944-950 (2022)
Doutje van Veen and Vincent Houtsma
J. Opt. Commun. Netw. 12(1) A95-A103 (2020)
Borui Li, Kuo Zhang, Dechao Zhang, Jiale He, Xiaolong Dong, Qian Liu, and Shengping Li
J. Opt. Commun. Netw. 12(9) D1-D8 (2020)