121.9-Gb/s PDM-OFDM Transmission With 2-b/s/Hz Spectral Efficiency Over 1000 km of SSMF

被引：153
|
作者：
Jansen, Sander Lars [1 ]
Morita, Itsuro [1 ]
Schenk, Tim C. W. [2 ]
Tanaka, Hideaki [1 ]
机构：
[1] KDDI R&D Labs, Saitama 3658502, Japan
[2] Philips Res, NL-5656 AE Eindhoven, Netherlands
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2009年 / 27卷 / 1-4期
关键词：
Chromatic dispersion compensation; fiber-optic transmission systems; long-haul transmission; orthogonal frequency-division multiplexing (OFDM); FREQUENCY;
D O I：
10.1109/JLT.2008.2007972
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We discuss optical multi-band orthogonal frequency division multiplexing (OFDM) and show that by using multiple parallel OFDM bands, the required bandwidth of the digital-to-analogue/ analogue-to-digital converters and the required cyclic prefix can significantly be reduced. With the help of four OFDM hands and polarization division multiplexing (PDM) we report continuously detectable transmission of 10 x 121.9-Gb/s (112.6-Gb/s without OFDM overhead) at 50-GHz channel spacing over 1,000-km standard single mode fiber (SSMF) without any inline dispersion compensation. In this experiment 8 QAM subcarrier modulation is used which confines the spectrum of the 121.9 Gb/s PDM-OFDM signal within a 22.8 GHz optical bandwidth. Moreover, we propose a digital signal processing method to reduce the matching requirements for the wideband transmitter IQ mixer structures required for PDM-OFDM.
引用
收藏
页码：177 / 188
页数：12
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