Elizabeth Bear matociquila writes Criminal Minds fanfic from time to time in her livejournal. I bet she'd give you input if you asked nicely - if she hasn't already posted on that subject. She's a very friendly award-winning sci fi writer. There's also a fanfiction writer who writes profic for Stargate who's pretty open about it - juliefortune

Me, I've never really posted my last name thither and yon, so it would take some sleuthing to match me with any published work - but I'm probably going to use a pseudonym anyway, not because of fanfiction but because of my day job.