First experimental demonstration of 6Gb/s real-time optical OFDM transceivers incorporating channel estimation and variable power loading.
First experimental demonstration of 6Gb/s real-time optical OFDM transceivers incorporating channel estimation and variable power loading.
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DOI：
10.1364/oe.17.019727
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发表时间：
2009-10
期刊：
影响因子：
3.8
通讯作者：
R. Giddings;X. Jin;J. Tang
中科院分区：
文献类型：
--
作者：
R. Giddings;X. Jin;J. Tang
有史以来最快的6 Gb/s的实时基于FPGA的光正交频分复用（OOFDM）收发器利用信道估计的实验证明，第一次，与可变的功率负载被纳入有效地补偿快速系统频率响应滚降效应。实现的收发器完全由现成的组件构成，并集成了在线性能监控和关键参数实时优化的关键功能，包括信号限幅、副载波功率和直接调制DFB激光器（DML）的工作条件。在采用DML的强度调制和直接检测系统中，成功地实现了6 Gb/s 16-QAM编码的OOFDM信号在300 mOM 1多模光纤上的端到端实时传输，功率代价为0.5dB。
The fastest ever 6Gb/s real-time FPGA-based optical orthogonal frequency division multiplexing (OOFDM) transceivers utilizing channel estimation are experimentally demonstrated, for the first time, with variable power loading being incorporated to effectively compensate for the rapid system frequency response roll-off effect. The implemented transceivers are constructed entirely from off-the-shelf components and incorporate crucial functionalities of on-line performance monitoring and live optimization of key parameters including signal clipping, subcarrier power and operating conditions of directly modulated DFB lasers (DMLs). Real-time end-to-end transmission of a 6Gb/s 16-QAM-encoded OOFDM signal over 300m OM1 multi-mode fiber with a power penalty of 0.5dB is successfully achieved in an intensity-modulation and direct-detection system employing a DML.