  We investigated the timing jitter of superconducting nanowire single-photon
detectors (SNSPDs) and found a strong dependence on the detector response. By
varying the multi-layer structure, we observed changes in pulse shape which are
attributed to capacitive behaviour affecting the pulse heights, rise times and
consequently timing jitter. Moreover, we developed a technique to predict the
timing jitter of a single device within certain limits by capturing only a
single detector pulse, eliminating the need for detailed jitter measurement
using a pulsed laser when a rough estimate of the timing jitter is sufficient.
