Terry, Alvaro, TJ and I tested the fiber feedthroughs after bagging up enough parts in the optics lab to create space on the table. 

We used 1064nm light coupled into our class B fiber to test the feedthroughs and the class A fibers which TJ and Alvaro placed on the VIP yesterday. 

We measured 92% transmission through the feedthrough SN8.  We connected this to the fiber SN6 which Alvaro and TJ had connected to the CLF collimator, we measured a total transmission of fiber SN6 + feedthrough SN8 of 82%.  (So the transmission of fiber SN6 is 89%)

Second we tested feedthrough SN9, with a transmission of 84%, and plugged this into fiber SN7 which is routed to the green collimator on the VIP, and measured a transmission of 87% (total transmission of feedthrough + fiber is 73%). 

I've added these results to E1700235 and created version 7.