At the moment its a make your own situation. It would be a lot like making any other glow prop, with the added complication of the curve. I'd search for glowstaff making stuff and then look into how the curve will be created. Ideally you'd want a curved clear tube, but I'd think metal/wood and lighting on/around the outside would be easier.
Its something on my todo list, but I've not got there yet!
Working hard to be a wandering hippie layabout. Ten years down, five to go!