I am curious if there is any need or want for fiber optic adapters? I have the tooling for SMA 905/906 at the moment but if there is big enough need I could get the tooling for others also. I see the B&W labby fiber launch adapter for over $100 all the time, I could make this without the micro lens for $35.00 shipped. It would be made from solid aluminum or for an extra it could be made 2 piece with steel and aluminum if really needed. This is just an example of what I am talking about, but with your specs it could be made to mount to anything, including power sensor heads. All parts will be bare aluminum or SS steel, I do not have access to anodizing equipment yet.