PT Unknown AU Zolotov, P Vakhtomin, Y Divochiy, A Morozov, P Seleznev, V Smirnov, K TI Development of fast and high-effective single-photon detector for spectrum range up to 2.3 μm SE Proc. SPBOPEN PY 2017 BP 439 EP 440 DE SSPD; SNSPD AB We present the results of development and testing of the single-photon-counting system operating in the wide spectrum rane up to 2.3 mcm. We managed to increase system detection efficiency up to 60% in the range of 1.7-2.3 mcm optimisation of the fabrication methods of superconducting single-photon detectors and application of the single-mode fiber with enlarged core diameter. ER