are underwater routers a thing?

Lady Benjamin Cannon of Glencoe lb at
Fri Mar 18 02:53:26 UTC 2022

Surprisingly it is power that primarily limits repeater count in undersea spans.

Ie, most available power is going to be eaten up budget wise by the repeaters, leaving none for routers.

It’s not terribly clear that a router would substantially benefit things that a ROADM could not also accomplish, and those do exist in undersea systems.

As routers decrease in power and coalesce with silicon photonics, this may change.


Ms. Lady Benjamin PD Cannon of Glencoe, ASCE
6x7 Networks & 6x7 Telecom, LLC 
ben at
"The only fully end-to-end encrypted global telecommunications company in the world.”

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> On Mar 17, 2022, at 6:42 PM, Michael Thomas <mike at> wrote:
> I was reading an article in the Economist about a new fiber route down the Red Sea from Israel and wondered if there were any branches off of those lines and where the routers were for them. The route kind of made it look like it was completely at sea, but it would kind of make sense to leave them at sea if you could put a router there.
> Mike

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