Subject: RE: DWDM Muxing

From: "Chima Chima" <[email-masked]>
Date: Thu, 21 Jun 2001 13:19:43 -0400

RE: DWDM MuxingSimon,
           Lucent 1.6 T  long haul system is capable of 80 channels C-Band
and 80 Channel L-Band.
This product has already been deployed by Time Warner.

Chima E. Chima

LWS/ESS/ONG
New York City
  -----Original Message-----
  From: Roberto Simongini [mailto:[email-masked]]
  Sent: Thursday, June 21, 2001 10:25 AM
  To: Simon Dredge
  Cc: Walt Carter; Hart, Jim; 'Chrysostomos Tziouvaras'; mpls; mpls-ops;
ip-optical
  Subject: RE: DWDM Muxing

  Simon,

  40 Channels  (C-Band) plus 40 (L-Band) are already commercialy available
on OPTEra L(ong) H(aul) DWDM products Family
  from NORTEL Networks. I may send you (as well as to other colleagues) some
Doc if might be of your interest. Regards.
  Roberto.

  Roberto Simongini
  NORTEL NETWORKS S.p.A.
  Wireless Solutions Engineering Director
  Unified Networks Solutions

  Via di Grotta Perfetta, 643
  00144 - ROMA

  Tel:    +39-06 5152 XT9234 (ESN 794 9234)
  Mobile: +39-(0) 348 2611 829
          e_mail: [email-masked]

  -----Original Message-----
  From: Walt Carter [mailto:[email-masked]]
  Sent: giovedì 21 giugno 2001 14.56
  To: Simon Dredge; Hart, Jim; 'Chrysostomos Tziouvaras'; mpls; mpls-ops;
  ip-optical
  Subject: RE: DWDM Muxing

  In today's DWDM systems, wavelength spacing occurs at 0.8 nm or 100-Ghz
  steps. Future systems will space wavelengths at 0.4 nm or 50 Ghz, to
further
  increase the capacity of existing fibers. The ITU has set specifications
  that list the channel code and wavelength for each optical signal
  multiplexed into a fiber. Present ITU specs recommend 81 channels,
starting
  at a center frequency of 196.10 THz (1528.77 nm) and decreasing in 80
steps
  of 50 GHz (~0.39 nm) each. The ITU uses as its starting point a 193.10-THz
  reference frequency that corresponds to a spectral line for krypton gas.
The
  ITU specified frequency rather than wavelength because wavelength depends
on
  a transmission medium, and thus it can vary. Frequency is a physical unit
  that will not vary as a signal goes from one medium into another, say from
  glass into air.

  Regards,
  Walter S. Carter
  kSi group, inc
  (770) 460-2062 Office
  (678) 362-4504 Mobile
  2 WAY: <[email-masked]>
  <http://www.ksigroup.net/>

  -----Original Message-----
  From: Simon Dredge [mailto:[email-masked]]
  Sent: Wednesday, June 20, 2001 12:50 PM
  To: Hart, Jim; 'Chrysostomos Tziouvaras'; [email-masked];
  [email-masked]; [email-masked]
  Subject: RE: DWDM Muxing

  I believe 40-Channel Muxes (full c-band) are in the works and will be
  available soon

  -----Original Message-----
  From: Hart, Jim [mailto:[email-masked]]
  Sent: Wednesday, June 20, 2001 9:09 AM
  To: 'Chrysostomos Tziouvaras'; [email-masked]; [email-masked];
  [email-masked]
  Subject: RE: DWDM Muxing

  it depends, but 32 is pretty common

  --
  Jim Hart
  Director, Data Engineering
  ICG communications
  [email-masked]
  303-414-5856
  cell- 720-320-0618

  -----Original Message-----
  From: Chrysostomos Tziouvaras [mailto:[email-masked]]
  Sent: Wednesday, June 20, 2001 9:02 AM
  To: [email-masked]; [email-masked]; [email-masked]
  Subject: DWDM Muxing

  Hi,
  do you know what's the state of the art in the number of channels in DWDM
  muxers?

  Thanks
  Chrysostomos Tziouvaras
  ICS-FORTH Researcher

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