Title :
Application of Raman-distributed amplification to WDM transmission systems using 1.55-μm dispersion-shifted fiber
Author :
Takachio, Noboru ; Suzuki, Hiro
Author_Institution :
Labs. of Network Innovation, NTT, Kanagawa, Japan
fDate :
1/1/2001 12:00:00 AM
Abstract :
A numerical design method for wavelength division multiplexing (WDM) transmission systems employing distributed Raman amplification (DRA) is proposed. This method evaluates fiber nonlinear effects by considering the equivalent fiber loss with DRA. The method is used to evaluate the performance of WDM transmission systems in which DRA is employed in a 1.55-μm dispersion-shifted fiber (DSF) transmission line. Transmission limit and the optimum fiber input powers for 1550-nm band (C-band) and 1580-nm band (L-band) transmission are investigated. Results show that bidirectional pumping is the best approach to extending transmission distance. Furthermore, the transport limits of optical transport networks that use DRA and optical add/drop multiplexers are analyzed
Keywords :
Raman lasers; optical fibre amplifiers; optical fibre dispersion; optical fibre networks; wavelength division multiplexing; 1.55 mum; 1.55-μm dispersion-shifted fiber; 1550 nm; 1580 nm; Raman distributed amplification; WDM transmission systems; bidirectional pumping; dispersion-shifted fiber transmission line; distributed Raman amplification; equivalent fiber loss; fiber nonlinear effects; numerical design method; optical add/drop multiplexers; optical transport networks; optimum fiber input powers; transmission distance; transport limits; wavelength division multiplexing; Design methodology; Fiber nonlinear optics; L-band; Nonlinear optics; Optical add-drop multiplexers; Optical fiber networks; Optical pumping; Power transmission lines; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Lightwave Technology, Journal of
