Bidirectional unrepeatered 43 Gb/s WDM transmission with C/L band-separated Raman amplification

被引：17

作者：

Mizuochi, Takashi ^{[1
]}

Kinjo, Kaoru ^{[1
]}

Kajiya, Satoshi ^{[1
]}

Tokura, Toshiyuki ^{[1
]}

Motoshima, Kuniaki ^{[1
]}

机构：

[1] Information Technology R and D Ctr., Mitsubishi Electric Corporation, Kamakura 247-8501, Japan

来源：

Journal of Lightwave Technology | 2002年 / 20卷 / 12期

关键词：

Amplification - Communication channels (information theory) - Crosstalk - Fiber optics - Four wave mixing - Light amplifiers - Light propagation - Light transmission - Optical communication - Optical pumping - Raman scattering - Wavelength division multiplexing;

D O I：

10.1109/JLT.2002.806767

中图分类号：

学科分类号：

摘要：

A novel wavelength arrangement using C- and L-band-separated Raman preamplification is proposed for application to bidirectional unrepeatered transmission systems operating with multiple 43 Gb/s channels. The proposed wavelength allocation makes it possible to greatly mitigate Raman gain depletion by the counter-propagating signals. The authors have achieved bidirectional unrepeatered transmission of 32 × 43 Gb/s channels (=1.28 Tb/s) over 200 km with Raman preamplifiers using the proposed technique. They found that the system performance of bidirectional transmission with C/L band-separated Raman preamplification is degraded by nonlinear interactions between the high power Raman pump lights and the WDM signals. The root cause can be described in terms of nondegenerate four-wave mixing induced by beating between the WDM signals and two longitudinal modes of the Raman pump light. A solution avoiding ND-FWM was demonstrated in a 32 × 43 Gb/s transmission experiment.

引用

页码：2079 / 2085