下一代光接入网中物理层关键技术研究进展

doi:10.3969/j.issn.0255-8297.2020.04.007

Abstract

Abstract: The rapid growth of 5G and data-intensive applications poses new challenges to the capacity of next-generation optical access networks. As the most mature broadband fiber access technology, passive optical networks (PON) has drawn widespread attention. In order to achieve a higher transmission rate under the premise of meeting the power budget, the key technology to improve the performance of the physical layer has always been a research hotspot in this field. Meanwhile, it is of great significance to reduce the system cost as much as possible for the large-scale deployment of PON. In this paper, we describe and summarize the research progress of key physical layer technologies in optical access network. We introduce the evolution and current status of the PON standards, analyze the challenges and causes in the next-generation PON, and focus on the key technologies such as digital equalization technology, high-order modulation formats, optical amplification, forward error correction, experimental analysis of nonlinear crosstalk, and low-cost coherent detection and their research progress. We also review the current research achievements of relevant works.

Key words: passive optical networks, equalization technique, modulation format, optical amplification, forward error correction, nonlinear crosstalk, low-cost coherent detection

CLC Number:

TN929.18

LUO Siyu, XU Yan, LI Zhengxuan, SONG Yingxiong, WANG Min. Progress in Key Technologies of Physical Layer in Next Generation Optical Access Networks[J]. Journal of Applied Sciences, 2020, 38(4): 612-629.

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Progress in Key Technologies of Physical Layer in Next Generation Optical Access Networks

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