Product category:
Optical Transceivers, Transponders and Repeaters
News Release from: Siemens ICN
Edited by the Electronicstalk Editorial
Team on 09 September 2002
New method cuts WDM system failures
Next Wednesday at ECOC 2002 in Copenhagen Siemens ICN will introduce a new method for minimising transient WDM system failures.
Next Wednesday at ECOC 2002 in Copenhagen Siemens ICN will report on stimulated Raman scattering (SRS) penalties in transparent optical networks limiting the dynamic system performance if conventional control schemes are applied A new method for minimising transient WDM system failures will be introduced
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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Meshed transparent optical networks require stable running links independent of traffic load changes originating from WDM channel routing, protection switching/restoration or component failures.
Still much effort is dedicated to the development of new control schemes for the suppression of gain transients in saturated fibre amplifiers which arise in the course of launch power variations.
So far the introduction of a sufficiently fast amplifier gain control was supposed to guarantee error free dynamic WDM network operation.
Siemens ICN will discuss the previously neglected SRS when included in the system simulations.
The quasi-instantaneous spectral tilt due to SRS for which active components cannot yet compensate necessitates the new evaluation of existing control schemes.
Though today's most widely applied gain control fails to suppress SRS power excursions, its performance may be greatly improved in combination with the proposed novel tilt filter.
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