摘要A single-photon detector based on an InGaAs avalanche photodiode has been developed for use at telecom wavelengths. A suitable delay and sampling gate modulation circuit are used to prevent positive and negative transient pulses from influencing the detection of true photon induced avalanches. A monostable trigger circuit eliminates the influence of avalanche peak jitter, and a dead time modulation feedback control circuit decreases the afterpulsing. From performance tests we find that at the optimum operation point, the quantum efficiency is 12% and the dark count rate 1.5×10-6ns-1, with a detection rate of 500kHz.
Abstract：A single-photon detector based on an InGaAs avalanche photodiode has been developed for use at telecom wavelengths. A suitable delay and sampling gate modulation circuit are used to prevent positive and negative transient pulses from influencing the detection of true photon induced avalanches. A monostable trigger circuit eliminates the influence of avalanche peak jitter, and a dead time modulation feedback control circuit decreases the afterpulsing. From performance tests we find that at the optimum operation point, the quantum efficiency is 12% and the dark count rate 1.5×10-6ns-1, with a detection rate of 500kHz.
[1] Gisin N, Ribordy G, Tittel W and Zbinden H 2002 Rev. Mod.Phys. 74 145 [2] Knill E, Laflamme R and Milburn G J 2001 Nature 409 46 [3] Garside B K and Park R E 1990 Proc. SPIE 1169 89 [4] Sun X L et al %, Krainak M A, Abshire J B, Spinhirne J D and Vandiver J C2004 J. Mod. Opt. 51 1333 [5] Bennett C H and Brassard G 1984 Proceedings of theInternational Conference on Computer Systems and Signal Processing (NewYork: IEEE) p 175 [6] Cova S et al %, Ghioni M, Lotito A, Rech I and Zappa F2004 J. Mod. Opt. 51 1267 [7] Prochazka I, Hamal K and Sopko B 2004 J. Mod. Opt. 51 1289 [8] Lacaita A, Francese P A, Zappa F and Cova S 1994 Appl. Opt. 33 6902 [9] Ribordy G et al %, Gisin N, Guinnard O, Stucki D, Wegmuller M and Zbinden H2004 J. Mod. Opt. 51 1381 [10] Bethune D S, Risk W P and Pabst G W 2004 J. Mod. Opt. 51 1359 [11] Owens P C et al %, Rarity J G, Tapster P R, Knight D and Townsend P D1994 Appl. Opt. 33 6895
2007, Vol. 24 
