1.55 ${\mu}$m파장의 저광량을 검출을 위한 APD의 자이거 모드 특성

Geiger-mode characteristics of avalanche photodiodes for low-light-level detection at 1.55 ${\mu}$m

The performance of the InGaAs/InP avalanche photodidodes operated in Geiger-mode was investigated for 1550nm wavelengths at room temperature. We find the optimal operating points where the high quantum detection efficiency and low dark current are achieved. For the optical pulse detection, the gated-mode is used to reduce the dark current.