摘要
针对高模式群时延(H-MGD)的少模光纤模分复用系统,提出了一种级联独立成分分析(C-ICA)算法,其基本思想是:采用延时补偿与C-ICA结合的技术方案,运用两次ICA算法同时消除模分复用器和解复用器引起的串扰。利用该算法对2×2模分复用系统进行了解复用,并且将其解复用性能与单次ICA算法解复用进行了比较。仿真结果表明,C-ICA算法能够有效实现H-MGD少模光纤模分复用系统的解复用,在同等条件下其解复用效果明显优于单次ICA解复用。
Aiming at the mode division multiplexing system with high-mode group delay （H-MGD） using few-mode fiber, a cascaded independent component analysis （C-ICA） algorithm is proposed. The core idea of the algorithm is that two complex ICA algorithms are combined with a delay compensation module to eliminate the modal crosstalk induced by the mode multiplexer and the demultiplexer respectively. Then the proposed C-ICA algorithm is utilized to demultiplex the received signals from a 2 × 2 mode division multiplexing system, and the demultiplexing performance of C-ICA is compared with that of the common ICA in which the complex ICA algorithm is used only once. The simulation results indicate that the proposed C-ICA algorithm can implement mode demultiplexing of the mode division multiplexing system with H MGD few-mode fiber validly. Moreover, C-ICA has better mode demultiplexing performance than the common ICA under the same conditions.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2016年第8期227-233,共7页
Chinese Journal of Lasers
基金
国家自然科学基金(61575078
61177066)
吉林省科技发展计划(20140203009GX)
吉林省发改委产业技术研究专项(2014Y087)
关键词
光通信
模分复用
复数独立成分分析
少模光纤
optical communications
mode multiplexing
complex independent component analysis
few-mode fiber
