title: Advanced modulation formats for 400-Gbps short-reach optical inter-connection.
abstract: Besides the long-haul optical networks covering over thousands of kilometers for backbone transmission, short reach optical networks (SR-ONs) are widely deployed in metro-area for aggregation and accessing. The SR-ONs include the metro optical transport networks (Metro-OTN), optical access networks or other optical inter-connection systems with even shorter distance. As predicted, the growing bandwidth demanding from SR-ONs will be much more than that from the long-haul optical networks in the near future. Besides, there are tremendous amounts of optical terminals and end-users in SR-ONs compared with the long-haul transmission systems and thus will induce large cost and huge energy consumption. So, the power and cost efficiency should be the key consideration for SR-ONs besides the transmission performance. To improve the power and cost efficiency in SR-ONs, advanced modulations and detection techniques based on low power, low cost and integrated optical modulators should be utilized. In this paper, different advanced modulation formats have been discussed. 56Gbps PAM4, 112Gbps poly-binary and 100Gbps DMT that can be used to realize 400-Gbps SR-ONs for different applications have also been demonstrated respectively. In addition, low-cost and low-power opto-electronic components suitable for SR-ONs, the impairments induced by all kinds of defects and bandwidth limitation of opto-electronic components and the corresponding compensation techniques based on DSP algorithms have also been discussed in the experiments.
authors.forename: Xiaogeng
authors.initials: X
authors.lastname: Xu
authors.forename: Enbo
authors.initials: E
authors.lastname: Zhou
authors.forename: Gordon Ning
authors.initials: GN
authors.lastname: Liu
authors.forename: Tianjian
authors.initials: T
authors.lastname: Zuo
authors.forename: Qiwen
authors.initials: Q
authors.lastname: Zhong
authors.forename: Liang
authors.initials: L
authors.lastname: Zhang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Bao
authors.forename: Xuebing
authors.initials: X
authors.lastname: Zhang
authors.forename: Jianping
authors.initials: J
authors.lastname: Li
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Li