Measurement of InGaAs single photon detector quantum efficiency at 1550nm

Kun Zhao; Changming Liu; Haidong Chen; Xueshun Shi

doi:10.1117/12.2076017

19 February 2015 Measurement of InGaAs single photon detector quantum efficiency at 1550nm

Kun Zhao, Changming Liu, Haidong Chen, Xueshun Shi

Proceedings Volume 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014); 94492Y (2015) https://doi.org/10.1117/12.2076017
Event: The International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference (icPOE 2014), 2014, Xi'an, China

Abstract

Single photon detectors nowadays are widely used in numerous applications such as quantum cryptography, laser ranging, single molecule spectroscopy and so on. And the calibration of the detection efficiency is quite important for some of the applications. In recent years, researchers find that correlated photon pairs can be employed to calibrate the detection efficiency of single-photon detectors with quite high precision. Firstly, we calibrated the InGaAs single photon detector quantum efficiency at 1550nm by correlated photon pairs. Consistency between the measurement result using correlated photon pairs and the reference value is better than 0.8%. Secondly, the detectors are calibrated with an attenuated laser source. Thirdly, the two methods for measuring the quantum efficiency of single photon detectors, correlated photon pairs and laser attenuation, respectively, are discussed and analyzed in detail. Finally, results derived from the two methods have been compared with each other.

Citation Download Citation

Kun Zhao, Changming Liu, Haidong Chen, and Xueshun Shi "Measurement of InGaAs single photon detector quantum efficiency at 1550nm", Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94492Y (19 February 2015); https://doi.org/10.1117/12.2076017

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