I don't understand why or how the people in the video are so glowingly happy/smiling. Is some point being made there?
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Google's Subsea Fiber Optics
31–40 of 103 posts
Re: Google's Subsea Fiber Optics
#32I make 340Tbit/sec about 1.1x10^11 GiByte/month. GCP premium tier networking is priced at $0.08/GB, so at 80% load that cable would, very naively, have the potential to bring in $7B/month in revenue. I'm sure they only take in a fraction of that, and their costs are substantial. But even so... cloud bandwidth is overpriced.
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Re: Google's Subsea Fiber Optics
#33When they say a single cable can deliver 340 Tbps capacity, do they mean a single fiber strand, or a bundle of strands in a sheath that we know as "cables"?
Re: Google's Subsea Fiber Optics
#34Unrelated, but if interested in ocean cables check out “A Thread Across the Ocean” by Steele. It’s the story of the first transatlantic cable. It’s a riveting read that is hard to put down. Full of interesting technical details intertwined with the stories of the characters involved. Highly recommended!
Re: Google's Subsea Fiber Optics
#35I wonder how long it will be before we see the first hollow-core fiber subsea cables. They are 50% faster, and tests from the last year or two have seen record low signal losses. https://www.laserfocusworld.com/fiber-optics/article/1419605... https://www.ofsoptics.com/wp-content/uploads/Hollow-Core-Fib...
> They are 50% faster No, pretty sure light still travels through them at C. What they can do is carry more data, largely by having lower error rates.
It's so nice when someone other than myself is confidently incorrect.
Re: Google's Subsea Fiber Optics
#36I don't understand why or how the people in the video are so glowingly happy/smiling. Is some point being made there?
People happy to share their work. Is that some kind of problem?
Feeling comfortable at work usually doesn't involve grinning into an abyss like at one's best friend.
This looks forced and cringey.
Re: Google's Subsea Fiber Optics
#37> A message took over 17 hours to deliver, at 2 minutes and 5 seconds per letter by Morse code
A letter in Morse code is made of up to four “dits” or “dahs”. Why would it take more than two minutes to send one letter?
Re: Google's Subsea Fiber Optics
#38I wonder how long it will be before we see the first hollow-core fiber subsea cables. They are 50% faster, and tests from the last year or two have seen record low signal losses. https://www.laserfocusworld.com/fiber-optics/article/1419605... https://www.ofsoptics.com/wp-content/uploads/Hollow-Core-Fib...
I might be totally wrong; It seems likely to me that, due to capillary action, if a hollow undersea fiber gets physically cut then seawater would flow into the hollow center.
The ends of the fiber might be at different depths with a pressure difference that could move water a long way into the fiber. I imagine the length that water got into would be ruined even if the water was pushed out again.
I conjecture that undersea hollow-core might end up being expensive to maintain.
Re: Google's Subsea Fiber Optics
#39Re: Google's Subsea Fiber Optics
#40> A message took over 17 hours to deliver, at 2 minutes and 5 seconds per letter by Morse code A letter in Morse code is made of up to four “dits” or “dahs”. Why would it take more than two minutes to send one letter?
You can read a transcript of the first conversations on the transatlantic telegraph[1]. Basically: the signal was very weak, they needed a lot of time between symbols, and they needed to repeat a lot.
https://www.google.com/books/edition/Report_of_the_Joint_Com...