Bare fiber testing with the holder and several ILX FPM-8210 power meters exhibited excellent repeatability in power measurements against rotational changes in the fiber and linear extension of the fiber from the tip of the holder. These factors, both of which are important in production testing of optical components, reduce the effort of an operator to position the bare fiber correctly to minimize measurement errors. This ultimately reduces the uncertainty in the measurement system. As shown in Figure 3, rotational repeatability ranged from 0.001 to 0.004 dB, while linear extension, 1 to 5 mm from the tip of the holder, exhibited a measurement repeatability of 0.001 to 0.003 dB. A statistical analysis for rotational and linear extension led to a three sigma specification of 0.003 dB power measurement repeatability. These errors are on the order of 0.0007% in the measurement.