I found this article which has one of those authors which mentions FPV drones using optical fibre (for 2-way communication) but it doesn't mention how long the fibre is. I would doubt very much that an FPV drone would carry 30-40km of fibre onboard to cross the Strait of Hormuz, it would be too heavy
Or you can leave the spool at the launcher, and spin it to reduce the pulling strain on the drone.