Adaptive-Modulation-Enabled WDM Impairment Reduction in Multichannel Optical OFDM Transmission Systems for Next-Generation PONs

被引：48

作者：

Giacoumidis, E. ^{[1
]}

Wei, J. L. ^{[1
]}

Yang, X. L. ^{[1
]}

Tsokanos, A. ^{[1
]}

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

机构：

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

来源：

IEEE PHOTONICS JOURNAL | 2010年 / 2卷 / 02期

关键词：

Optical fiber communication; orthogonal frequency-division multiplexing (OFDM); single-mode fiber (SMF); wavelength-division multiplexing (WDM); FIBER LINKS; DFB LASERS; IMDD LINKS; PERFORMANCE; SIGNALS;

D O I：

10.1109/JPHOT.2010.2044403

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：

The transmission performance of multichannel adaptively modulated optical orthogonal frequency-division multiplexing (AMOOFDM) signals is investigated numerically, for the first time, in optical-amplification-free and chromatic-dispersion-compensation-free intensity-modulation and direct-detection systems directly incorporating modulated distributed feedback (DFB) lasers (DMLs). It is shown that AMOOFDM not only significantly reduces the nonlinear wavelength-division multiplexing (WDM) impairments induced by the effects of cross-phase modulation and four-wave mixing but also effectively compensates for the DML-induced frequency chirp effect. In comparison with conventional modulated optical orthogonal frequency-division multiplexing (OFDM), which uses an identical signal modulation format across all the subcarriers, AMOOFDM improves the maximum achievable signal transmission capacity of a central WDM channel by a factor of 1.3 and 3.6 for 40- and 80-km standard single-mode fibers, respectively, with the corresponding dynamic input optical power ranges being extended by approximately 5 dB. In addition, AMOOFDM also causes the occurrence of cross-channel complementary modulation format mapping among various WDM channels, leading to considerably improved transmission capacities for all individual WDM channels.

引用

页码：130 / 140

页数：11

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