中国激光, 2011, 38 (s1): s105007, 网络出版: 2012-01-06
光码分多址系统10 Gb/s多用户系统实验
Multi-User 10 Gb/s Optical Code Division Multiple Access Experiment
光通信 光码分多址 光纤光栅 功率对比度 optical communications optical code-division multiple-access fiber Bragg grating power contrast ratio
摘要
立足现有的商用接收机组件实现解码信号的判决恢复是光码分多址(OCDMA)系统往实用化发展的一个重要方向。具有高功率对比度(PCR)的编解码器有助于在窄带接收条件下形成具有较高信噪比(SNR)的判决电信号。实验中基于商用窄带接收机组件即10 G PIN+TIA和10 G时钟数据恢复(CDR)模块,利用自主设计制作的具有高功率对比度的光纤光栅(FBG)编解码器实现了双用户10 Gb/s 60 km无误码传输实验,并初步实现了三用户10 Gb/s背靠背无误码实验。实验中测试了不同用户数情况下背靠背和60 km传输时的误码率(BER)曲线,分析了引起功率代价的系统损伤原因和进一步改进系统性能的思路。
Abstract
To recover the decoded signals based on the existing commercial receiver modules is an important practical developing direction of optical code division multiple access (OCDMA) systems. The en/decoders with high power-contrast-ratio (PCR) can help to form the electrical decision signals with high signal-noise-ratio (SNR) under the narrow-band receiver condition. Based on the commercial narrow-band receiver, i.e., 10 G PIN+TIA and 10 G clock data recorery (CDR), two-user 10 Gb/s 60 km error-free transmission experiment is implemented with the self-designed fiber-Bragg-grating (FBG)-based en/decoders with high PCR. The three-user 10 Gb/s back-to-back (BTB) error-free experiment is also achieved. In the experiment, different bit-error-rate (BER) curves are tested with different users and w/o transmission. Both the impairing factors which cause the power punishment and the approaches to improve sytem performance are analyzed.
郑吉林, 王荣, 蒲涛, 卢麟, 方涛, 苏洋, 朱磊, 项鹏, 魏志虎, 陈向飞. 光码分多址系统10 Gb/s多用户系统实验[J]. 中国激光, 2011, 38(s1): s105007. Zheng Jilin, Wang Rong, Pu Tao, Lu Lin, Fang Tao, Su Yang, Zhu Lei, Xiang Peng, Wei Zhihu, Chen Xiangfei. Multi-User 10 Gb/s Optical Code Division Multiple Access Experiment[J]. Chinese Journal of Lasers, 2011, 38(s1): s105007.