Photon-counting optical time-domain reflectometry with superconducting nanowire single-photon detectors

Abstract

We applied superconducting nanowire single-photon detectors to photon-counting optical time-domain reflectometry (OTDR). The setup was optimized to minimize the timing jitter of the photon detections to 42 ps. Therefore, we achieved a spatial resolution of 4 mm in our OTDR system. Based on the super high spatial resolution, we observed the reflection from a… (More)

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