北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2007, Vol. 30 ›› Issue (5): 95-99.doi: 10.13190/jbupt.200705.95.zhangya

• 研究报告 • 上一篇    下一篇

多模光纤模间色散的电均衡补偿

张阳安,李良川   

  1. (北京邮电大学 电信工程学院,北京 100876)
  • 收稿日期:2006-12-13 修回日期:2007-06-04 出版日期:2007-10-30 发布日期:2007-10-30
  • 通讯作者: 李良川

Compensation for the Intra-Modal Dispersion in Multimode Fiber using Electronic Equalizers

ZHANG Yang-an, LI Liang-chuan   

  1. Beijing University of Posts and Telecommunications, Beijing 100876, China)
  • Received:2006-12-13 Revised:2007-06-04 Online:2007-10-30 Published:2007-10-30
  • Contact: ZHANG Yang-an

摘要:

在不同的参数条件下用中心差分法数值计算了多模光纤的波动方程得到LP模场分布函数,再通过数值计算迭加积分得到激光器激发出的模功率分布,进而得到多模光纤的功率转移函数. 基于线性前馈均衡和判决反馈均衡对模间色散的电域补偿进行了仿真研究. 结果表明,采用判决反馈均衡能满足10 Gbit/s速率的信号在已敷设的多模光纤上传输300 m,色散导致的功率劣化小于4dB的要求.

关键词: 多模光纤, 模间色散, 光功率转移函数, 电均衡

Abstract:

Wave-guide function in multimode fiber is solved using central difference method to get the linearly polarized mode distribution and double integral is done to get the mode power distribution by laser inspirited. Two steps are the key to calculate the optical power transfer function (OPTF). At last equalization simulation is carried out and the results show that for 300-meter distance 4dB dispersion performance requirement of 10G Ethernet can be satisfied by using decision feedback equalization.

Key words: multimode fiber, intra-modal dispersion, optical power transfer function, electronic equalization

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