Figure 5From: A study to develop a robust method for measuring the detection efficiency of free-running InGaAs/InP single-photon detectorsSetup used by NPL for measuring the detection efficiency of the InGaAs/InP SPAD detector. All fibre-to-fibre connections used in the experiment are shown. The red circled area denotes fibre connections that are swapped between successive power calibration measurements and detection efficiency measurementsBack to article page