Add needed standard reference

[sergiobelotti]

More references are needed to where attributes and identities are defined. Need to review and add where is needed the correct reference.

Please see related comment https://github.com/ietf-ccamp-wg/ietf-ccamp-layer0-types-ext/pull/4#pullrequestreview-439527955.

[ggrammel]

Google found found below table here: https://www.snia.org/technology-communities/sff/specifications?field_doc_status_value=All&combine=module+management&field_release_date_value_2%5Bvalue%5D%5Bdate%5D=&field_release_date_value%5Bvalue%5D%5Bdate%5D=&items_per_page=20&captcha_sid=2344903&captcha_token=e14eae6c0df19f04e569aeb8e09b97a3

Standards.pdf

Assume all of those have their own definitions, but perhaps not all are relevant for WDM. Is anyone of the optical experts aware of those?

[italobusi]

List of definitions or standard references to be provided:

• modulation format;
• FEC type;
• OTU type (see #21 )
• Power mode
• SNR and GSNR
• PSD
• PMD
• Penalty Loss (PL)

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Co-authored-by: sergio belotti sergio.belotti@nokia.com

[italobusi]

Updated list of definitions or standard references to be provided:

• modulation format;
• Power mode
• SNR and GSNR
• PSD
• PMD
• Penalty Loss (PL)

[ggrammel]

• modulation format: doesn't seem to have a definition. The best reference I could find was G.Sup39

  This edition adds further information on modulation formats; clarifies power budget parameters for systems with optical amplifiers; provides further information on the optical signal-to-noise ratio (OSNR) measurement;

• Power mode: This is about operating Amplifiers which AFAIK are not subject to Standardization in ITU-T

• OSNR can again be found inG.Sup39 but it's rather a description. G.977.1 also refers to the earlier but has a better definition. Suggest to use G.977.1 as a reference.

• GSNR is defined in G.977.1

  • PSD G.9700
  • PMD G.666
  • Penalty Loss (PL): Don't think there is an ITU-T definition of it as the term alone looks quite "sloppy". Could not find a good reference