There is a standard for fibre computer cabling, and any company that does wiring for business will know how to install it.
I'm more on the computer side than than the home theather side, but I've not heard of anyone proposing a standard FC standard for HT. Maybe the convergence of HT and computers will force it.
There's a definitive standard for computer fibre -
http://www.fibrechannel.com/Fibre will be expensive to install today. 100Mb/sec twisted pair is painless and much cheaper. That said, I know people (OK, engineers) that wired new houses for both... btw: Wiring for 100Mb/sec ethernet is no harder (or expensive) that running phone lines....
Hope this helps.