Config15
23-Apr-2018 to present

This is rebuilt S/N 1 with a new PDBS and fold mirror. It was received at NIST around April 19. Mark says "This part is one of the two original test parts (Rev C, SN1 & SN2) we made as opposed to the large run of  "production" units (Rev D).(which are numbered (D001-DXXX)). These two Rev C test splitters  have a slightly different tolerance on the barrel ID to allow adequate adjustment and I consider them incompatible with the Rev D production parts."

I had saved the lenses from S/N 1 when I sent it back to Mark for realignment. So this configuration is:
Input: Lens "1 2" from S/N 1 with Fiber Collet at the BS body and FC at the sphere source, fiber is same as Config13;
Through output: Lens "Vis 3 4" from S/N 1 with Fiber Collet at the BS body and FC at PD2, fiber is same as Config13;
90deg/fold output: Lens "NIR" from S/N 1 with FC at BS and FC at PD1, fiber is FISH #7.

Gains / which PD
6 / source sphere
7 / through channel (PD2)
8 / 90deg/fold channel (PD1)


To assemble, everything was disconnected (output PDs and connectors on the sphere source) so not to perturb the collets, which cannot be twisted.