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Also, doesn't this have the issue that anything passing through the beam cuts off internet? A bird, a kite, a malicious actor, a dust storm?
https://archmeregreenarch.org/1456/news/starlink-and-the-ris...
There is a newer version of fiber optic cable that uses a hollow core. Testing has shown it transmits signals at nearly the speed of light. It is very difficult to produce at scale and will require a generational shift to deploy.
FTA: "However, scaling up is not something Leuthold and his team will be concerning themselves with". As an engineer, the words "devil" and "details" come to mind.
> Although the laser system was not directly tested with an orbiting satellite, they accomplished high-data transmission over a free-space distance of 53km (33 miles). This is peanuts compared to under sea cables and issues you will find penetrating atmosphere and increasingly, space. We should keep under sea cables and work on additional connections to make our networks more resilient, both to natural phenomena, equ…
> more resilient, both to natural phenomena, equipment failures and sabotage. I think you're understating the risks from geomagnetic storms. In comparison to satellites, fiber optic cables seem like they'd be relatively unaffected even if the equipment attached to them needs replacement.
> Although the laser system was not directly tested with an orbiting satellite, they accomplished high-data transmission over a free-space distance of 53km (33 miles). This is peanuts compared to under sea cables and issues you will find penetrating atmosphere and increasingly, space. We should keep under sea cables and work on additional connections to make our networks more resilient, both to natural phenomena, equ…
> more resilient, both to natural phenomena, equipment failures and sabotage. I think you're understating the risks from geomagnetic storms. In comparison to satellites, fiber optic cables seem like they'd be relatively unaffected even if the equipment attached to them needs replacement.
FTA: "However, scaling up is not something Leuthold and his team will be concerning themselves with". As an engineer, the words "devil" and "details" come to mind.
Why is scaling always necessary? Can't we just do this same thing, but more of and bigger? I mean, that makes it easy-peasy.
Current fiber optic cables transmit signals at 2/3rds the speed of light. Modeling has shown that starlink's laser backbone would allow it to beat deep-sea cables in some situations. This article estimates a NYSE -> FTSE reduction from 76ms to 43ms. I wouldn't be surprised to learn that there is a HFT bidding war going on. https://archmeregreenarch.org/1456/news/starlink-and-the-ris... There is a newer version of fib…
Eliminate deep sea cables? How are they going to send the lasers in a curve from one base station to the next? Starlink is already working on a backhaul from satellite to satellite. Interestingly, they claim that they can speed up data transfers by 50% over long distances. Musk said that in a Tweet which I cannot find now. I looked a bit into it and the reason seems to be that light trough a cable can only reach 70%…
You would send to a satellite in view; my orbital dynamics are poor, but I think with the LEO orbits, you may need to relay in space for a cross ocean link, as it seems unlikely one satelite would have a view of both sides. But Telstar 1 and 2 were used for cross-Atlantic microwave relay with a single satellite in view at a time. Future Telstars were geostationary, because satellite tracking was a lot of work (and with only two satellites, service was intermittent as they were only in view for a portion of their orbits). I imagine satellite tracking for lasers is going to be very difficult as well.
Current fiber optic cables transmit signals at 2/3rds the speed of light. Modeling has shown that starlink's laser backbone would allow it to beat deep-sea cables in some situations. This article estimates a NYSE -> FTSE reduction from 76ms to 43ms. I wouldn't be surprised to learn that there is a HFT bidding war going on. https://archmeregreenarch.org/1456/news/starlink-and-the-ris... There is a newer version of fib…
https://sniperinmahwah.wordpress.com/2018/05/07/shortwave-tr...