光学学报, 2009, 29 (s2): 175, 网络出版: 2010-01-27   

20 Gb/s差分四相移键控系统偏振模色散自适应补偿实验研究

Experimental Research of Adaptive PMD Compensator for 20 Gb/s DQPSK System
作者单位
北京邮电大学信息光子学与光通信教育部重点实验室, 北京 100876
摘要
随着光纤通信系统速率的不断提高,光纤中的偏振模色散(PMD)逐渐成为限制光纤通信系统性能的主要因素之一。当系统的传输速率达到40和100 Gb/s时,缓解偏振模色散对信号的损伤成为必要。报道了以偏振度(DOP)作为反馈信号,粒子群优化算法(PSO)作为搜索跟踪算法的两阶段光偏振模色散自适应补偿器,并将其分别应用于20 Gb/s 非归零差分四相移键控及载波抑制差分四相移键控系统。通过多次搜索和长时间跟踪验证了偏振模色散自适应补偿器的性能。搜索成功率接近100%,搜索过程中平均动作次数在100次以内,最大耗时在30 ms以内;跟踪过程中,在快速扰偏的情况下,作为反馈信号的偏振度始终保持在1附近。成功实现了对造成差分群时延(DGD)最大可达89 ps快速变化的动态一阶和部分高阶偏振模色散的自适应补偿和实时跟踪,具有很强的实用价值。
Abstract
For upgrading the existing 100 Gb/s fiber optic communication systems to 40 Gb/s or beyond systems smoothly, research on polarization mode dispersion (PMD) compensators is becoming a hot topic nowadays. Adaptive PMD compensation is successfully demonstrated in 20 Gb/s NRZ-DQPSK and CSRZ-DQPSK system. The research realizes quick searching and real time tracking by using degree of polarization (DOP) as the feed back signal and adopting the particle swarm optimization (PSO) algorithm under rapid polarization scramble. Experimental results show that time-varying PMD which has the largest differential group delay(DGD) of 89 ps in the transmission link is successfully mitigated by the adaptive PMD compensators.
参考文献

[1] 段高燕, 张晓光, 于丽 等. 前馈PMD补偿实验中从偏振度椭球获得差分群时延的研究[J]. 光子学报, 2006, 35(12): 1861~1864

    Duan Gaoyan, Zhang Xiaoguang, Yu Li et al.. Experimental research on obtaining DGD from the degree of polarization ellipsoids[J]. Acta Photonica Sinica, 2006, 35(12): 1861~1864

[2] 贾佳. 两段PMD补偿中的优化算法比较[J]. 光子学报, 2007, 36(6): 1003~1007

    Jia Jia. Comparison of optimization algorithms in 2-order PMD compensation[J]. Acta Photonica Sinica, 2007, 36(6): 1003~1007

[3] . . PMD compensation based on a new type dynamic first-order PMD compensator[J]. Chin. Opt. Lett., 2006, 4(4): 202-204.

[4] Zhang Xiaoguang, Yu Li, Zheng Yuan et al.. Adaptive PMD compensation using PSO algorithm[C]. OSA/OFC 2004, Paper THF1

[5] 张晓光, 于丽, 郑远 等. 光纤通信系统中偏振模色散自适应补偿实验研究[J]. 光子学报, 2003, 32(12): 1474~1478

    Zhang Xiaoguang, Yu Li, Zheng Yuan et al.. An experiment of adaptive polarization mode dispersion compensation for optical communication systems[J]. Acta Photonica Sinica, 2003, 32(12): 1474~1478

[6] 赵鑫嫒, 刘慧洋, 王少康 等. 光的差分八相移相键控调制解调原理及偏振模色散补偿性能分析[J]. 光学学报, 2009, 29(6): 12~16

    Zhao Xinyuan, Liu Huiyang, Wang Shaokang et al.. Study of the principle of optical 8-DPSK and the performance used in the polarization-mode dispersion compensation system[J]. Acta Optica Sinica, 2009, 29(6): 12~16

[7] 许玮, 段高燕, 方光青 等. 不同调制格式的偏振模色散补偿性能分析[J]. 光学学报, 2008, 28(2): 226~232

    Xu Wei, Duan Gaoyan, Fang Guangqing et al.. Analysis of polarization mode dispersion compensation performance for different modulation formats[J]. Acta Optica Sinica, 2008, 28(2): 226~232

[8] 段高燕, 李喜红, 王刚 等. 基于偏振度的偏振模色散补偿中检测信号对不同归零码型的响应研究[J]. 光子学报, 2006, 35(1): 123~125

    Duan Gaoyan, Li Xihong, Wang Gang et al.. The research of response of checking signals to different return-zero formats in the PMD compensation systems based on degree of polarization[J]. Acta Photonica Sinica, 2006, 35(1): 123~125

[9] . Zhang, Yuan Zheng, Yu Shen et al.. Particle swarm optimization used as a control algorithm for adaptive PMD compensation[J]. IEEE Photonics Technology Letters, 2005, 17(1): 85-87.

[10] 张晓光, 光纤偏振模色散自适应补偿系统的研究[D]. 北京: 北京邮电大学, 2004. 77~80

    Zhang Xiaoguang. Researches on adaptive compensation system for polarization mode dispersion[D]. Beijing: Beijing University of Posts and Telecommunications, 2004. 77~80

翁轩, 张晓光, 席丽霞, 赵鑫媛, 田凤. 20 Gb/s差分四相移键控系统偏振模色散自适应补偿实验研究[J]. 光学学报, 2009, 29(s2): 175. Weng Xuan, Zhang Xiaoguang, Xi Lixia, Zhao Xinyuan, Tian Feng. Experimental Research of Adaptive PMD Compensator for 20 Gb/s DQPSK System[J]. Acta Optica Sinica, 2009, 29(s2): 175.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!