Earlier quoted context omitted.
Rocket launches definitely do.
Do you have any numbers on that?
Do you have numbers that it doesn’t pollute?
Google's Subsea Fiber Optics
101–103 of 103 posts
Re: Google's Subsea Fiber Optics
#102I 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 und…
I may be even more wrong, but maybe this leads to a more modular way of building/laying these "cables".
I imagine that you need less of them, because "faster" also means longer range until attenuation kicks in. How much more range/less amplifiers compared to current state of the art I don't know. I'd think it should be possible to lay down a new part the whole length between two amplifiers/laser pumps/couplings/ and "plug" it in by remote controlled submersibles, instead of lifting up the broken ends, and "splicing" it on the ship. Like pre-made Cat-5/7 with RJ-45 plugs, so to speak :-)
Re: Google's Subsea Fiber Optics
#103If you're interested in learning more about how a WSS (Wavelength Selective Switch) works under the hood, there are 2 main methods: * An array of MEMS micro-mirrors which turn to reflect light, or * Finisar's LCoS based method, which uses a 1" LCD TV display to display a gradient pattern which literally bends light. It looks like the undersea cables use Finisar's (now II-IV's) WSS. I think the idea of bending light u…