title: InGaAs/InAlAs single photon avalanche diode for 1550 nm photons.
abstract: A single photon avalanche diode (SPAD) with an InGaAs absorption region, and an InAlAs avalanche region was designed and demonstrated to detect 1550 nm wavelength photons. The characterization included leakage current, dark count rate and single photon detection efficiency as functions of temperature from 210 to 294 K. The SPAD exhibited good temperature stability, with breakdown voltage dependence of approximately 45 mV K(-1). Operating at 210 K and in a gated mode, the SPAD achieved a photon detection probability of 26% at 1550 nm with a dark count rate of 1 × 10(8) Hz. The time response of the SPAD showed decreasing timing jitter (full width at half maximum) with increasing overbias voltage, with 70 ps being the smallest timing jitter measured.
authors.affiliation: Department of Electronic and Electrical Engineering , University of Sheffield , Sheffield S1 3JD , UK.
authors.forename: Xiao
authors.identifier: 0000-0002-7061-9840
authors.initials: X
authors.lastname: Meng
authors.affiliation: Department of Electronic and Electrical Engineering , University of Sheffield , Sheffield S1 3JD , UK.
authors.forename: Shiyu
authors.initials: S
authors.lastname: Xie
authors.affiliation: Department of Electronic and Electrical Engineering , University of Sheffield , Sheffield S1 3JD , UK.
authors.forename: Xinxin
authors.initials: X
authors.lastname: Zhou
authors.affiliation: Dipartimento di Elettronica , Informazione e Bioingegneria, Politecnico di Milano , Milano 20133 , Italy.
authors.forename: Niccolò
authors.initials: N
authors.lastname: Calandri
authors.affiliation: Dipartimento di Elettronica , Informazione e Bioingegneria, Politecnico di Milano , Milano 20133 , Italy.
authors.forename: Mirko
authors.initials: M
authors.lastname: Sanzaro
authors.affiliation: Dipartimento di Elettronica , Informazione e Bioingegneria, Politecnico di Milano , Milano 20133 , Italy.
authors.forename: Alberto
authors.initials: A
authors.lastname: Tosi
authors.affiliation: Department of Electronic and Electrical Engineering , University of Sheffield , Sheffield S1 3JD , UK.
authors.forename: Chee Hing
authors.initials: CH
authors.lastname: Tan
authors.affiliation: Department of Electronic and Electrical Engineering , University of Sheffield , Sheffield S1 3JD , UK.
authors.forename: Jo Shien
authors.initials: JS
authors.lastname: Ng
keywords: fibre-optic telecommunication; photon counting; single photon avalanche diode