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Analysis of significant factors in DWDM optical communication systems

Analysis of significant factors in DWDM optical communication systems Purpose – The current generation of light wave systems benefit from increased transmission distance by using optical amplification and increased capacity by using dense wavelength division multiplexing (DWDM) technology. The reach of present systems is limited by the noise contributed by the used amplifiers, combined with nonlinear effects from transmission. This paper aims to address these issues. Design/methodology/approach – The nature and extent of degradations in the optical DWDM systems due to these limiting factors have been discussed in this paper. Findings – It has been learnt that stimulated Raman scattering (SRS), four wave mixing (FWM) and amplified spontaneous emission (ASE) are the important factors in optical DWDM systems. These factors limit the system capacity of the transmission systems drastically. Originality/value – It can be concluded from the discussion that while designing an efficient DWDM system, an optimization of the channel separation and the amplifier separation is required to minimize the nonlinear effects (FWM and SRS) along with the ASE noise introduced by inline optical amplifications. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Engineering, Design and Technology Emerald Publishing

Analysis of significant factors in DWDM optical communication systems

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Publisher
Emerald Publishing
Copyright
Copyright © 2010 Emerald Group Publishing Limited. All rights reserved.
ISSN
1726-0531
DOI
10.1108/17260531011034637
Publisher site
See Article on Publisher Site

Abstract

Purpose – The current generation of light wave systems benefit from increased transmission distance by using optical amplification and increased capacity by using dense wavelength division multiplexing (DWDM) technology. The reach of present systems is limited by the noise contributed by the used amplifiers, combined with nonlinear effects from transmission. This paper aims to address these issues. Design/methodology/approach – The nature and extent of degradations in the optical DWDM systems due to these limiting factors have been discussed in this paper. Findings – It has been learnt that stimulated Raman scattering (SRS), four wave mixing (FWM) and amplified spontaneous emission (ASE) are the important factors in optical DWDM systems. These factors limit the system capacity of the transmission systems drastically. Originality/value – It can be concluded from the discussion that while designing an efficient DWDM system, an optimization of the channel separation and the amplifier separation is required to minimize the nonlinear effects (FWM and SRS) along with the ASE noise introduced by inline optical amplifications.

Journal

Journal of Engineering, Design and TechnologyEmerald Publishing

Published: Mar 30, 2010

Keywords: Electronic engineering; Design and development; Optimization techniques; Optical communication equipment

References