Chromatic dispersion mitigation using a SEFDM-based diversity technique for IM/DD long reach optical links

Baoxian Yu, Changjian Guo, Sen Zhang, Tianjian Zuo, Lei Liu, Alan Pak Tao Lau, Chao Lu, Han Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

Spectral efficient frequency division multiplexing (SEFDM) can offer a higher spectral efficiency (SE) than orthogonal frequency division multiplexing (OFDM). In this work, we propose a diversity technique based on SEFDM for beyond 100-Gb/s optical intensity modulation and direct detection (IM/DD) long reach (LR) applications. We mathematically demonstrate that the self-created inter-carrier interference of SEFDM signals can be reused to achieve a diversity gain on each sub-carrier and, in turn, improve the tolerance to power fading induced by chromatic dispersion (CD) in IM/DD LR links. Based on the proposed diversity technique, we further demonstrated a 112-Gb/s SEFDM transmission over 80-km standard single-mode fiber, using only 28-GHz bandwidth and modulation format of up to 16-QAM. Experimental results show that SEFDM with the proposed diversity technique performs robust against CD effects and outperforms the conventional OFDM with adaptive bit and power loading of the same bandwidth and data rate, which validates the superiority of the proposed SEFDM in optical IM/DD LR transmissions.

Original languageEnglish
Pages (from-to)38579-38592
Number of pages14
JournalOptics Express
Volume27
Issue number26
DOIs
Publication statusPublished - Dec 2019

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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