We propose and demonstrate a procedure for characterizing the quantum efficiency of a single-photon detector in the telecommunication wavelength band. Our procedure employs a bidirectional coincidence counting technique to distinguish optical component losses from the detection efficiency. The standard deviations of the measured quantum efficiencies were nearly identical to the standard deviations derived from a detection probability having a Poisson distribution.
© 2007 Optical Society of America
Instrumentation, Measurement, and Metrology
Original Manuscript: July 11, 2007
Revised Manuscript: September 13, 2007
Manuscript Accepted: September 16, 2007
Published: October 25, 2007
Satoru Odate, Akio Yoshizawa, Daiji Fukuda, and Hidemi Tsuchida, "Quantum efficiency measurements by bidirectional coincidence counting of correlated photon pairs," Opt. Lett. 32, 3176-3178 (2007)