ID Summary: draft-papadimitriou-ipo-non-linear-routing-impairments-00.txt

[Dimitri Papadimitriou <dimitri.papadimitriou@alcatel.be>]

ID Name: draft-papadimitriou-ipo-non-linear-routing-impairments-00.txt
ID Title:  Non-linear Routing Impairments in Wavelength Switched Optical
Networks

- Summary:

   The main objective of this document is first to determine
   which kind of optical non-linear effects must be taken into account, 
   and to give some simple engineering rules to determine their maximum
   tolerable value, second, to propose IGP routing protocol extensions
   in order to cover non-linear optical routing impairments.
  
- Where does it fit in the Picture of the Sub-IP Area

This ID fits in the IPO WG

- Why is it targeted at this WG

   The aim of this document is to extend the previous works dedicated to
   routing impairments (draft-ietf-ipo-impairments-00.txt and draft-
   banerjee-ipo-routing-impairments-00.txt) in order to determine
   which are the non-linear effects that must be considered and which
   kind of engineering rules may be used to take these effects into
   account in constraint-based optical routing.

   Related IDs:
   http://www.ietf.org/internet-drafts/draft-ietf-ipo-impairments-00.txt
  
http://www.ietf.org/internet-drafts/draft-banerjee-ipo-routing-impairments-00.txt

- Justification
    
   Today, in transparent optical networks, the increasing bit-rate (10
   Gbit/s and up to 40 Gbit/s in the future), combined with the
   increasing number of wavelengths (16 and higher up to 320) and a
   narrowing of the channels spacing, enhance the impact of non-linear
   effects on optical signal quality.

   Therefore, non-linear effects like Self-Phase Modulation (SPM),
Cross-
   Phase Modulation (XPM), Four-Wave Mixing (FWM) as well as Stimulated
   Raman Scattering (SRS) and Brillouin scattering have to be examined
   in order to evaluate their impacts on the transmission quality. If
   these effects appear to be significant, they have to be taken into
   account in the routing of a wavelength throughout a transparent
   optical network.
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