Anyone make an Optical slave trigger out to Nikonos 5-pin?

I'm trying to figure out if there's any way to interface a modern housing for a mirrorless camera, who's only flash connector is two optical ports for the pop-up flash, to fire a Nikonos strobe as a slave (it's an SB-103, but the same gadget would work for any Nikonos strobe). I'm pretty sure that I could cobble something together that would work on dry land, that I could just tape in place, but does anyone have such a device that works underwater and securely mounts to an underwater flash and/or bracket?

http://wetpixel.com/articles/review-triggerfish-remote-slave-trigger

https://www.opticaloceansales.com/strobe-triggers/#/product/2657

And there are more solutions out there