Real-time demonstration of 128-QAM-encoded optical OFDM transmission with a 5.25bit/s/Hz spectral efficiency in simple IMDD systems utilizing directly modulated DFB lasers

被引：41

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 | 2009年 / 17卷 / 22期

关键词：

MULTIMODE-FIBER LINKS; SIGNALS; PERFORMANCE;

D O I：

10.1364/OE.17.020484

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The feasibility of implementing 128-QAM in off-the-shelf component-based real-time optical OFDM (OOFDM) transceivers incorporating advanced channel estimation, on-line performance monitoring and live parameter optimisation, is experimentally investigated, for the first time, in intensity-modulation and direct-detection (IMDD) single-mode fibre (SMF) and multi-mode fibre (MMF) transmission systems involving directly modulated DFB lasers. The highest ever spectral efficiency of 5.25bit/s/Hz is demonstrated successfully in the aforementioned simple systems. Experimental investigations show that, it is feasible to transmit 5.25Gb/s 128-QAM-encoded OOFDM real-time signals over 25km MetroCor TM SMFs and 500m 62.5/125 mu m OM1 MMFs. The impact of key parameters on the transmission performance of the real-time OOFDM transceivers with 128-QAM encoding are explored, based on which optimum signal clipping ratios are identified. (C) 2009 Optical Society of America

引用

页码：20484 / 20493

页数：10

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