Alternative modulation formats in Nx40 Gb/s WDM standard fiber RZ-transmission systems

被引：57

作者：

Hodzic, A ^{[1
]}

Konrad, B ^{[1
]}

Petermann, K ^{[1
]}

机构：

[1] Tech Univ Berlin, Fachgebiet Hochfrequenztechn, D-10587 Berlin, Germany

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2002年 / 20卷 / 04期

关键词：

communication system nonlinearities; optical fiber communication; optical modulation; optical pulse generation; wavelength division multiplexing (WDM);

D O I：

10.1109/50.996579

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：

A comparison of carrier-suppressed return-to-zero (CSRZ) and single sideband return-to-zero (SSB-RZ) formats is made in an attempt to find the optimum modulation format for high bit rate optical transmission systems. Our results show that CSRZ is superior to return-to-zero (RZ) and SSB-RZ with respect to signal degradation due to Kerr nonlinearities and chromatic dispersion in wavelength division multiplexing (WDM) as well as in single-channel 40-Gb/s systems over standard single-mode fibers (SSMF). It is shown that CSRZ enables a maximum spectral efficiency of approximately 0.7 (b/s)/Hz in a N x 40 Gb/s WDM system with equally polarized channels. Furthermore, the CSRZ format in N x 40 Gb/s WDM systems shows no further signal degradation compared to single-channel transmission.

引用

页码：598 / 607

页数：10

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