Optical fibre for starts

Has any progress been made in the use of optical fibre for start timing cables?

The current FIS timing booklet mentions "Optical Cables: If a converter is necessary between timing cables and optical cables, then the converter must be approved by the FIS."

I read James' response to a similar question several years ago: http://timingguys.com/eve/foru...117044973#7117044973

I understand the technical hurdles, however there are possible solutions.

Does anyone know of converters? Either approved by FIS, or adequate for local fun races?
Original Post
Hi Fred, I'm curious if testing of impulses over fibre might have happened?

Also curious if you've come across a device which can send an impulse over mobile network- I saw one once which wasn't homoligated but good enough for local races, have been trying to track it down.

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