Following on from alog 52292:
We have a power transmission of 82% through the fiber (50mW in, 41mW out), as measured in the PSL. We still need to re-measure the transmission after feeding it through to the electronics racks by ISCT1. The beam into the fiber pick off is currently blocked inside the PSL.
We have aligned a PD (Thorlabs SM1PD1A) behind the steering mirror into the fiber. The mirror is 98.4% reflective, and the PD has a coupld of ND filters in front of it. With 50mW incident on the fiber the PD was reading roughly 200mV. The cable to this PD was also fed out to the racks.