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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.
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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.
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-R. <br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> NANOG <nanog-bounces+rod.beck=unitedcablecompany.com@nanog.org> on behalf of Mark Tinka <mark@tinka.africa><br>
<b>Sent:</b> Monday, February 1, 2021 3:22 PM<br>
<b>To:</b> nanog@nanog.org <nanog@nanog.org><br>
<b>Subject:</b> Re: New High Fiber Count Deep Sea Cables</font>
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<div class="x_moz-cite-prefix">On 2/1/21 12:30, Rod Beck wrote:<br>
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Here is the intellectual foundation or underpinnings of the new deep sea design which are enabling fiber pair counts as high as 24.
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I think the engineers might enjoy this. <br>
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<a href="https://ieeexplore.ieee.org/document/8369356" id="LPlnk">https://ieeexplore.ieee.org/document/8369356</a><br>
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This is from 2018 - the submarine cable industry has come a long way since then :-).<br>
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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.<br>
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What is interesting, now, is that in lieu of copper, aluminium is being preferred as a conductor, to lower build costs.<br>
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Mark.<br>
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