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Re: [HSSG] <HSSG-FOAH> Meeting

Title: RE: [HSSG] <HSSG-FOAH> Meeting


No, the CWDM grid is contained in G.694.2 titled Spectral grids for WDM applications: CWDM wavelength grid from December 2003.  It has the grid wavelengths which start at 1271 nm and end at 1611 nm.

G.695 titled Optical interfaces for coarse wavelength division multiplexing applications is the Recommendation containing the interface specifications power levels etc. and refers to G.694.2 for the CWDM grid.

The two documents can be obtained at:

(You will have to download the 2004 version of G.695 unless you have a Ties account)


Pete Anslow

Nortel Networks UK Limited, London Rd, Harlow, Essex CM17 9NA, UK

External +44 1279 402540 ESN 742 2540

Fax +44 1279 402543

From: Xavier Clairardin [mailto:xclairardin@KOTURA.COM]
Sent: 04 April 2007 20:54
Subject: Re: [HSSG] <HSSG-FOAH> Meeting


Thank you for your presentation this morning. In slide 4 of your presentation, I believe ITU G695 would be a more recent version of the CWDM grid adopted by ITU. This last version was released in 2/2004 with a potential wavelength plan starting at 1431 to 1611 (20nm spacing)


Xavier Clairardin


-----Original Message-----

From: Chris Cole [mailto:chris.cole@FINISAR.COM]

Sent: Wednesday, April 04, 2007 12:46 PM


Subject: Re: [HSSG] <HSSG-FOAH> Meeting

During today's Fiber Optic Ad Hoc call we discussed updating the SMF

alternatives table. We simplified the table entries to three key

qualifiers that are required to enable technical feasibility. The

updated table is enclosed. Any comments on the proper assignment of the

qualifiers will be appreciated.

We would also like to get input on the alternatives that are currently

under active investigation (green shading in the table) by HSSG


During the FOAC call, the 20G/25G - 1310nm alternatives, and 10G -

1550nm alternatives were confirmed as under active investigation.

We would like to find out if the 20G/25G - 1550nm, the 50G - 1310nm and

100G - 1310nm alternatives (shaded green) continue to be under active


We would also like to find out if any of the white areas are under

active investigation.

Please send an email indicating if you are investigating any of the

areas not confirmed during today's FOAC call.

The purpose is to accurately reflect which investigations are taking

place so that we can get an idea of what presentations we can expect to

see during upcoming HSSG meetings. At this point we are not making any

selection between the alternatives.

Thank you