Guard-ring free InGaAs/InP single photon avalanche diodes for C-band quantum communication

Rustige, Pascal; Krause, Jan; Eckoldt, Lorenz; Runge, Patrick; Schell, Martin

doi:10.1364/ofc.2023.w3c.4

Optical Fiber Communication Conference (OFC) 2023 2023

DOI: 10.1364/ofc.2023.w3c.4

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Guard-ring free InGaAs/InP single photon avalanche diodes for C-band quantum communication

Pascal Rustige

Jan Krause

Lorenz Eckoldt

et al.

Abstract: We present a guard-ring free InGaAs/InP single photon avalanche diode with 20 µm diameter for the optical C-band. At 225 K, 25.6 µs dead time and 17% detection efficiency, the dark count rate is 3 kcps with 0.5% afterpulsing probability. This corresponds to a quantum bit error rate of about 1.2% for 625 MHz timebin-phase BB84 QKD over 125 km.

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2024

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Room temperature 96x96 InGaAs/InP SPAD array for SWIR imaging

Rustige,

Runge,

Schell

2024

Sensors, Systems, and Next-Generation Satellites XXVIII

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We present a 96x96 InGaAs/InP single photon avalanche diode (SPAD) array for detection at 1550 nm wavelength. The pixels have a diameter of 15 µm and a 25 µm pitch, resulting in a fill factor of 28.3%. The dark count rates (DCR) of the array were measured for a subset of 6x24 pixels. The DCR vs. photon detection efficiency of a representative SPAD and the breakdown voltage statistics for a subset of 6x96 pixels were recorded at room temperature. The DCR of the measured subset has a median value of very low 87 kcps. At corresponding excess bias, we measured a photon detection efficiency (PDE) of 15%. The breakdown voltage of the 6x96 subset has a median value of 62.2 V with a standard deviation of only 72 mV. The results indicate a strong candidate for a SWIR imaging sensor in low-level-light applications.

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Room temperature 96x96 InGaAs/InP SPAD array for SWIR imaging

Rustige,

Runge,

Schell

2024

Sensors, Systems, and Next-Generation Satellites XXVIII

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show abstract

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Guard-ring free InGaAs/InP single photon avalanche diodes for C-band quantum communication

Cited by 1 publication

References 3 publications

Room temperature 96x96 InGaAs/InP SPAD array for SWIR imaging

Room temperature 96x96 InGaAs/InP SPAD array for SWIR imaging

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