Spectrally-efficient 17.6-Tb/s DWDM optical transmission system over 678 km with pre-filtering analysis

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

R. Silva¹  M. L. Silva¹  L. H. H. Carvalho¹  A. Paradisi¹  E. P. Silva¹  J. P. K Perin¹  P. P. G. Cardoso¹  J. C. R. F. Oliveira¹ 

[1] Centro de Pesquisa e Desenvolvimento em Telecomunicações;

关键词: Coherent detection;    high-speed optical systems;    modulation format;    optical filtering;    optical networks;    spectral efficiency;   

DOI  :  10.1590/S2179-10742013000200018

来源: DOAJ

【 摘 要 】

We present and analyze a 17.6-Tb/s DWDM optical transmission composed of 79 channels with 224-Gb/s RZ-DP-16QAM modulation format per-channel and coherent detection. A maximum reach of 678 km is obtained with an optical recirculation loop composed by 226 km of pure-silica core fibers and EDFA amplification only in a 50-GHz grid system with spectral efficiency of 4.2-b/s/Hz. Also, a 25-GHz Gaussian optical pre-filter is applied to each channel and the same reach of 678 km is obtained in a 37.5-GHz channel grid system with spectral efficiency of 5.6-b/s/Hz. These results demonstrate a 33% system capacity improvement without transmission penalties.

【 授权许可】

Unknown