50 Gbit/s 40km QSFP28 Optical Transceiver Modules based on PAM4 Technology

XIAO Li-hu; SHE Li; XU Hong-chun; LIN Tao; ZHANG Wu-ping; CHEN Tu-quan; SONG Xiao-ping; ZHANG Di

doi:10.13756/j.gtxyj.2019.02.012

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50 Gbit/s 40km QSFP28 Optical Transceiver Modules based on PAM4 Technology

- 50 Gbit/s 40km QSFP28 Optical Transceiver Modules based on PAM4 Technology
- Study on Optical communication Issue 2, Pages: 51-54(2019)
- 作者机构：
  
  1. 武汉邮电科学研究院
  2. 武汉光迅科技股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2019.02.012
  CLC： TN929.1
- Published：2019，
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[1]肖蠡虎,佘丽,徐红春,林韬,张武平,陈土泉,宋小平,张玓.基于PAM4技术的50 Gbit/s 40km QSFP28传输模块[J].光通信研究,2019(02):51-54+70.

XIAO Li-hu, SHE Li, XU Hong-chun, et al. 50 Gbit/s 40km QSFP28 Optical Transceiver Modules based on PAM4 Technology. [J]. (2):51-54(2019)
[1]肖蠡虎,佘丽,徐红春,林韬,张武平,陈土泉,宋小平,张玓.基于PAM4技术的50 Gbit/s 40km QSFP28传输模块[J].光通信研究,2019(02):51-54+70. DOI： 10.13756/j.gtxyj.2019.02.012.

XIAO Li-hu, SHE Li, XU Hong-chun, et al. 50 Gbit/s 40km QSFP28 Optical Transceiver Modules based on PAM4 Technology. [J]. (2):51-54(2019) DOI： 10.13756/j.gtxyj.2019.02.012.

摘要

设计了一种基于四阶脉冲幅度调制（PAM4）技术的50 Gbit/s 40 km QSFP28封装的长距离光传输模块

以应对现代社会对通信传输的带宽、速率和容量等要求的不断增长。使用了PAM4技术以提高单波长的数据传输容量

使得单波传输速率达到50 Gbit/s;在模块的接收单元使用雪崩光电二极管（APD）作为光探测器

使得模块对小光信号的接收能力得到提高;测试结果表明

模块的性能较为稳定

优化了APD部分电路设计

以获得更佳的传输效果

能够满足50 GE 40 km传输。

Abstract

In view of the growing requirements of bandwidth

transmission speed and capacity

a kind of 50 Gbit/s PAM4 QSFP28 optical transceiver module is proposed

which can meet the demands of 40 km transmission. The PAM4 technology is used to increase the transmission capacity in each single wavelength. At the receiver side

the key component of the photo-detector is APD

which can increase the ability of identifying weak signal

and meet the requirement of 40 km transmission in 50 GE. The circuit of reception unit is optimized to obtain a better transmission effect. The result indicates that the transceiver can work steadily

meet the demands of 40 km transmission in 50 GE.

关键词

四阶脉冲幅度调制QSFP2850 GE以太网APD40km

Keywords

PAM4QSFP2850 GEAPD40km

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Wuhan Research Institute of Post and Telecommunications

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