Real-time experimental demonstration of optical OFDM symbol synchronization in directly modulated DFB laser-based 25km SMF IMDD systems

被引：34

作者：

Jin, X. Q. ^{[1
]}

Giddings, R. P. ^{[1
]}

Hugues-Salas, E. ^{[1
]}

Tang, J. M. ^{[1
]}

机构：

[1] Bangor Univ, Sch Elect Engn, Bangor LL57 1UT, Gwynedd, Wales

来源：

OPTICS EXPRESS | 2010年 / 18卷 / 20期

关键词：

OPTIMUM RECEIVER DESIGN; SPECTRAL EFFICIENCY; TRANSMISSION; FREQUENCY; SIGNALS;

D O I：

10.1364/OE.18.021100

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple optical OFDM (OOFDM) synchronization technique utilizing subtraction and Gaussian windowing at the symbol rate is proposed and implemented in FPGA-based OOFDM receivers. End-to-end real-time symbol synchronization of 128-QAM-encoded OOFDM signals at raw bit rates of 6.56Gb/s is experimentally demonstrated, for the first time, over directly modulated DFB laser-based 25km SMF intensity modulation and direct detection (IMDD) systems. Experimental investigations show that the proposed synchronisation technique offers a number of salient advantages including low complexity, fast tracking speed, high accuracy and suitability for high-capacity optical transmission systems. (C)2010 Optical Society of America

引用

页码：21100 / 21110

页数：11

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