Spectrum pruning of 42.7-Gb/s CS-RZ for spectrally efficient long-haul DWDM system

Xiaohong Ma; Yanhe Li; Xin Chen; Shidai Liu; Hanyi Zhang; Yili Guo

doi:10.1117/12.521755

7 May 2004 Spectrum pruning of 42.7-Gb/s CS-RZ for spectrally efficient long-haul DWDM system

Xiaohong Ma, Yanhe Li, Xin Chen, Shidai Liu, Hanyi Zhang, Yili Guo

Proceedings Volume 5281, Optical Transmission, Switching, and Subsystems; (2004) https://doi.org/10.1117/12.521755
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China

Abstract

This paper focuses on the simulative optimization of modulation format, which is CS-RZ format with appropriate spectrum filtering, in a 42.7Gb/s spectrally efficient long-haul DWDM system. It is studied that the required bandwidth of the CS-RZ signal with spectrum pruning for channel spacing of 50GHz. The power loss and crosstalk are calculation under the Gaussian filter with various order and bandwidth. The influence on the CS-RZ waveform by the filter of various order and bandwidth was also investigated. Furthermore, the Q-value of the 42.7Gb/s CS-RZ signal was simulated before and after 640km fiber link transmission with 3 order Gaussian filter of various bandwidth, which simulative test system was designed as a 42.7Gb/s DWDM system with simultaneous C+L band discrete Raman amplifier by dispersion compensation fiber (DCF) as Raman medium. As a conclusion, the optimum filter bandwidth of 42GHz is obtained for the 42.7Gb/s 50GHz spaced DWDM system. Q-value of the signal is up to 8 and remains 6.7 after transmission of 640km fiber link, with the filter of the optimum bandwidth.

Citation Download Citation

Xiaohong Ma, Yanhe Li, Xin Chen, Shidai Liu, Hanyi Zhang, and Yili Guo "Spectrum pruning of 42.7-Gb/s CS-RZ for spectrally efficient long-haul DWDM system", Proc. SPIE 5281, Optical Transmission, Switching, and Subsystems, (7 May 2004); https://doi.org/10.1117/12.521755

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