Hi everybody,
I’m currently searching an off the shelf fiber optic tether.
It need to be neutrally or slightly buoyant in fresh water and fitted with one single mode 8/125 optical fiber with ST connectors at both side.
Length is not very critical if it’s in the range 200 - 500m
Shipping to France !
It’s a pretty urgent need !
Let me know … 
They might be able to help. Great company with good people.
Thanks for the idea !
i just send them a message 
They make the FiFish and sell a variety of tethers.
Hi Luc,
We are distributors in Italy for BlueRov and we can provide fiber optic tether with underwater connector.
Please, request a quote to our commercial office, including any features you need.
Email us to : sorsricerche@gmail.com
Have a nice day
Thanks to all for your suggestions !
@sorsricerche : i just send you an email …