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  • To: "Swanson, Steven E" <SwansonSE@xxxxxxxxxxx>, "workgroup_mailer@xxxxxxxxxxxxxxxxxxxx" <workgroup_mailer@xxxxxxxxxxxxxxxxxxxx>, "fibre_channel@xxxxxxxxxxxxxxxxxxxx" <fibre_channel@xxxxxxxxxxxxxxxxxxxx>
  • From: "Xu, Yang (Sunny)" <Sunny.Xu@xxxxxxxxxxxxx>
  • Date: Fri, 7 Jan 2022 20:03:12 +0000
  • Cc: "Dean Wallace (deanw@xxxxxxxxxxx)" <deanw@xxxxxxxxxxx>, "Kozischek, Dave R." <KOZISCHEDR@xxxxxxxxxxx>

Hi Steve,

Happy new year! Thanks for your comments and material, it provided good background for our conversations today.

 

Hi all,

I have noted down the below changes for Table 9 – text in red were agreed on (with some minor editorial suggestions), and highlighted in yellow will be further discussed at the Feb meeting.

 

      Table 9 – Fiber Optic Cabling (Channel) Characteristics

Description

Unit

Value

Note

Normal Nominal Fiber Sepcification Specification Wavelength

nm

1310

 

Cable Optical Fiber Attenuation (max)

dB/km

0.43 or 0.50

1,2

Zero Dispersion Wavelength

nm

1300<=v0<=1324

 

Dispersion Slope (max) (S0)

ps/nm2km ps/(nm2 x km)

0.093

 

Notes:

1 The Outside Plant cable (OS2) attenuation is 0.4dB/km at 1310nm as defined in ANSI/TIA-568.3 and ISO/IEC 11801-1. The 0.43dbdB/km at 1304.5nm attenuation for optical fiber cables is derived from Appendix I of ITU-T G.695.

2 The 0.5dB/km attenuation is provided for Outside Plant Indoor-Outdoor cable as defined in ANSI/TIA

568.3 -C.3.

 

Thanks all for a great discussion today.

 

Cheers,

Sunny Xu

 

From: Swanson, Steven E <SwansonSE@xxxxxxxxxxx>
Sent: Tuesday, January 4, 2022 3:23 PM
To: Xu, Yang (Sunny) <Sunny.Xu@xxxxxxxxxxxxx>; workgroup_mailer@xxxxxxxxxxxxxxxxxxxx; fibre_channel@xxxxxxxxxxxxxxxxxxxx
Cc: Dean Wallace (deanw@xxxxxxxxxxx) <deanw@xxxxxxxxxxx>; Kozischek, Dave R. <KOZISCHEDR@xxxxxxxxxxx>
Subject: RE: [EXTERNAL]--[fibre_channel] RE: FC-PI-8 interim ZOOM call

 

 

Hi Sunny,

 

Happy New Year.

 

Dave Kozischek and I discussed these topics this morning and I have sent him some backup information for discussion on your call.

 

My recommendations:

 

  1. In Table 9, keep footnotes 1 and 2 because they are consistent with all of the application specifications in IEEE. These specifications are based on CWDM systems.

 

Add a footnote 3: “Using 0.5 dB/km may not support operation at 10 km for Fibre Channel applications.”

 

I am not sure what you mean by “clarify the 1304nm.” There is a footnote in the 100G-LR link budget tables that notes “aThe channel insertion loss is calculated using the maximum distance specified in Table 2-1 and cabled optical fiber attenuation of 0.43 dB/km at 1304.5 nm plus an allocation for connection and splice loss given in 5.2.1.”

 

  1. Regarding optical return loss, again these values are consistent with the DR application specifications in IEEE

 

The basis for the original work were presented in 802.3cd for 500m 100G-DR

 

The basis for 2km and 10km 100G-DR were presented in 802.3cu

 

Best regards,

 

Steve

 

Steven E. Swanson

Senior Standards Manager

Distinguished Associate

Global Technology & Industry Standards

MT&E

Corning Optical Communications

4200 Corning Place

Charlotte, NC 28216

 

m 607-725-1129

 

swansonse@xxxxxxxxxxx

 

Standards are a bridge between markets and technologies; whoever controls the bridge controls the future…

 

From: fibre_channel@xxxxxxxxxxxxxxxxxxxx <fibre_channel@xxxxxxxxxxxxxxxxxxxx> On Behalf Of Xu, Yang (Sunny)
Sent: Tuesday, January 4, 2022 1:46 PM
To: workgroup_mailer@xxxxxxxxxxxxxxxxxxxx; fibre_channel@xxxxxxxxxxxxxxxxxxxx
Cc: Dean Wallace (deanw@xxxxxxxxxxx) <deanw@xxxxxxxxxxx>
Subject: [EXTERNAL]--[fibre_channel] RE: FC-PI-8 interim ZOOM call

 

Hi all,

 

In preparation of the interim call, please find below content for further discussion.

 

 

  • Note 1 – It appears to be related to the center wavelength specified in Table 6. Recommend having one spec of 0.4dB/km (also aligns with all other international standards), and clarify the 1304.nm spec in footnote.
  • Note 2 – This is outdated and needs to be corrected. ANSI/TIA-568.3 OS2 attenuation spec has changed to 0.4dB/km, which is in alignment with ISO/IEC 11801-1.

 

 

How are these values calculated? How often are these used in practice given standard-compliant connectors must meet the IEC spec of 55dB.

 

 

Cheers,

Sunny Xu

 

-----Original Appointment-----
From: workgroup_mailer@xxxxxxxxxxxxxxxxxxxx <workgroup_mailer@xxxxxxxxxxxxxxxxxxxx>
Sent: Monday, December 20, 2021 10:25 AM
To: workgroup_mailer@xxxxxxxxxxxxxxxxxxxx; fibre_channel@xxxxxxxxxxxxxxxxxxxx
Subject: FC-PI-8 interim ZOOM call
When: Friday, January 7, 2022 10:00 AM-11:30 AM America/Los_Angeles.
Where: ZOOM meeting

 

Event Title: FC-PI-8 interim ZOOM call


Date: Friday, 07 January 2022, 10:00am to 11:30am PST
Location: ZOOM meeting
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From Touchpad, tap Join Zoom button. When prompted, enter Meeting ID and Password

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Dial 162.255.37.11 (US West), enter 997 5856 7995 and # when prompted. International H323 IP addresses

 


Agenda

The agenda will be posted to the INCITS website before the meeting.

 


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