On distributed Raman amplification for ultrabroad-band long-haul WDM systems

Author

Perlin, Victor E. ; Winful, Herbert G.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA

Volume

20

Issue

3

fYear

2002

fDate

3/1/2002 12:00:00 AM

Firstpage

409

Lastpage

416

Abstract

We present an analysis and design method for multiwavelength pumped fiber Raman amplifiers for massive wavelength division multiplexing (WDM) systems with signal bandwidths of 10 to 12 THz and a very large number of channels. We solve self-consistently the optimal design problem for backward-pumped distributed Raman amplifiers with special gain profiles that compensate for the Raman tilt and wavelength-dependent fiber loss. We study the noise performance of these optimally designed amplifiers and address the issues of multispan amplification for long-haul transmission of such broadband signals

Keywords

genetic algorithms; inverse problems; iterative methods; laser noise; optical communication equipment; optical crosstalk; optical fibre amplifiers; optical fibre losses; stimulated Raman scattering; superradiance; wavelength division multiplexing; 10 to 12 THz; ASE noise accumulation; Raman tilt; Stokes spontaneous Raman scattering; anti-Stokes spontaneous Raman scattering; attenuation spectrum; backward propagation iterations; backward-pumped Raman amplifiers; coupled nonlinear equations; distributed Raman amplification; gain profiles; genetic algorithm; inverse problem; massive wavelength division multiplexing systems; multiple pump waves; multispan amplification; multiwavelength pumped fiber Raman amplifiers; noise performance; optical crosstalk; optical fiber losses; optimal design method; performance analysis; signal-to-signal Raman scattering; stimulated Raman scattering; ultrabroadband long-haul WDM systems; very large number of channels; wavelength-dependent fiber loss; Bandwidth; Crosstalk; Design methodology; Distributed amplifiers; Optical fiber amplifiers; Optical fibers; Optical noise; Raman scattering; Stimulated emission; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.988989

Filename

988989