Optical links are being developed for use from fixed ground stations.
replyhttps://news.ycombinator.com/item?id=46709548 - Discussion from a month ago with several links for a recent example.
It's being implemented. I thought I saw that Amazon Leo (nee Kuiper) was going to lean on it pretty heavily.
replyhttps://www.techbriefs.com/component/content/article/47300-u...
That talks about inter-satellite links (which Starlink uses already). Parent comment asked about ground <-> sat
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