[Starlink] Why ISLs are difficult...

[Dave Taht]

Perhaps related, but, regardless, very interesting: optical switching
using mems mirrors, with a picture of the chip that does it:

https://cloud.google.com/blog/topics/systems/the-evolution-of-googles-jupiter-data-center-network

...

More about the crazy things google is doing leveraging this is in the
sigcomm2022 paper, here:
https://dl.acm.org/doi/10.1145/3544216.3544265