Re: New High Fiber Count Deep Sea Cables

[Mark Tinka]

On 2/1/21 17:13, Rod Beck wrote:

I think that report is a summary of the thinking that led to the new 
higher count cables. In fact, those researchers work for the companies 
that laid those cables.


The new cables are based on the ideas outlined in that paper? spacing 
regen farther apart, putting fewer waves on each fiber pair so 
nonlinearities can be avoided, etc.


Exactly, especially where distances are super long.

Mark.



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Re: New High Fiber Count Deep Sea Cables

[Rod Beck]

I think that report is a summary of the thinking that led to the new higher 
count cables. In fact, those researchers work for the companies that laid those 
cables.

The new cables are based on the ideas outlined in that paper? spacing regen 
farther apart, putting fewer waves on each fiber pair so nonlinearities can be 
avoided, etc.

-R.


From: NANOG  on behalf 
of Mark Tinka 
Sent: Monday, February 1, 2021 3:22 PM
To: nanog@nanog.org 
Subject: Re: New High Fiber Count Deep Sea Cables



On 2/1/21 12:30, Rod Beck wrote:
Here is the intellectual foundation or underpinnings of the  new deep sea 
design which are enabling fiber pair counts as high as 24.

I think the engineers might enjoy this.

https://ieeexplore.ieee.org/document/8369356

This is from 2018 - the submarine cable industry has come a long way since then 
:-).

Channel spacing on marine systems has always been the game. Adding intelligence 
into branching units (BU's), as well as improvements in amplifier design has 
been a contributory factor as well.

What is interesting, now, is that in lieu of copper, aluminium is being 
preferred as a conductor, to lower build costs.

Mark.

Re: New High Fiber Count Deep Sea Cables

[Mark Tinka]

On 2/1/21 12:30, Rod Beck wrote:
Here is the intellectual foundation or underpinnings of the  new deep 
sea design which are enabling fiber pair counts as high as 24.


I think the engineers might enjoy this.

https://ieeexplore.ieee.org/document/8369356 



This is from 2018 - the submarine cable industry has come a long way 
since then :-).


Channel spacing on marine systems has always been the game. Adding 
intelligence into branching units (BU's), as well as improvements in 
amplifier design has been a contributory factor as well.


What is interesting, now, is that in lieu of copper, aluminium is being 
preferred as a conductor, to lower build costs.


Mark.

New High Fiber Count Deep Sea Cables

[Rod Beck]

Here is the intellectual foundation or underpinnings of the  new deep sea 
design which are enabling fiber pair counts as high as 24.

I think the engineers might enjoy this.

https://ieeexplore.ieee.org/document/8369356
[https://ieeexplore.ieee.org/assets/img/ieee_logo_smedia_200X200.png]
Cost-Optimized Submarine Cables Using Massive Spatial 
Parallelism
ieeexplore.ieee.org



Roderick Beck

VP of Business Development

United Cable Company

www.unitedcablecompany.com

New York City & Budapest

rod.b...@unitedcablecompany.com

Budapest: 36-70-605-5144

NJ: 908-452-8183


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