Abstract

To cope with the extraordinary bandwidth demand, an optical access network based on point-to-multipoint (P2MP) topology has been widely applied. Recently, flexible transceivers have been investigated to maximize the optical power budget of optical network units for increasing the capacity of passive optical networks. In this work, we experimentally demonstrate a low-cost, high-bandwidth P2MP solution based on multicarrier modulations and probabilistic constellation shaping technology by reusing a 10G class directly modulated laser and avalanche photodetector for the first time to our knowledge. The proposed P2MP solution is capable of achieving fine granularity data rate adjustment from 12.5 Gb/s up to 63 Gb/s. We discuss the hardware implementation aspect of the proposed multicarrier entropy loading flexible transceiver. By means of a real-time transmission experiment, we show that the proposed P2MP solution can achieve a 29 dB power budget at a symmetric 53 Gb/s line rate, which makes it well positioned to support non-residential P2MP applications such as passive optical local area networks and fiber-to-the-office.

© 2023 Optica Publishing Group

End-to-end deep learning for a flexible coherent PON with user-specific constellation optimization

Sizhe Xing, Zhongya Li, Changle Huang, Guoqiang Li, Aolong Sun, An Yan, Wangwei Shen, Jianyang Shi, Ziwei Li, Chao Shen, Nan Chi, and Junwen Zhang
J. Opt. Commun. Netw. 16(1) 59-70 (2024)

Simplified LDPC-assisted CNC algorithm for entropy-loaded discrete multi-tone in a 100G flexible-rate PON

Wenxuan Mo, Ji Zhou, Gengchen Liu, Yuanda Huang, Liangchuan Li, Han Cui, Haide Wang, Qingxin Lu, Weiping Liu, and Changyuan Yu
Opt. Express 31(4) 6956-6964 (2023)

100G fine-granularity flexible-rate passive optical networks based on discrete multi-tone with PAPR optimization

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)

Real-time validation of downstream 50G/25G and 50G/100G flexible rate PON based on Miller encoding, NRZ, and PAM4 modulation

Doutje van Veen and Vincent Houtsma
J. Opt. Commun. Netw. 15(8) C147-C154 (2023)

Principle and strategy of using probabilistic shaping in a flexible coherent passive optical network without optical amplifiers

Sizhe Xing, Guoqiang Li, An Yan, Wangwei Shen, Zhongya Li, Jiaye Wang, Jianyang Shi, Zhixue He, Nan Chi, and Junwen Zhang
J. Opt. Commun. Netw. 15(8) 507-517 (2023)