Results 21 to 30 of about 1,773 (163)

Hybrid SPAD/PD Receiver for Reliable Free-Space Optical Communication

open access: yesIEEE Open Journal of the Communications Society, 2020
Free-space optical (FSO) communication provides wireless optical connectivity with high data rates and low-cost implementation; however, its performance is strongly influenced by the power attenuation due to the infrequent adverse weather conditions ...
Shenjie Huang, Majid Safari
doaj   +1 more source

A 3.06 μm Single-Photon Avalanche Diode Pixel with Embedded Metal Contact and Power Grid on Deep Trench Pixel Isolation for High-Resolution Photon Counting

open access: yesSensors, 2023
In this study, a 3.06 μm pitch single-photon avalanche diode (SPAD) pixel with an embedded metal contact and power grid on two-step deep trench isolation in the pixel is presented.
Jun Ogi   +13 more
doaj   +1 more source

Super-resolution time-resolved imaging using computational sensor fusion

open access: yesScientific Reports, 2021
Imaging across both the full transverse spatial and temporal dimensions of a scene with high precision in all three coordinates is key to applications ranging from LIDAR to fluorescence lifetime imaging.
C. Callenberg   +9 more
doaj   +1 more source

On-Chip Compressive Sensing with a Single-Photon Avalanche Diode Array

open access: yesSensors, 2023
Single-photon avalanche diodes (SPADs) are novel image sensors that record photons at extremely high sensitivity. To reduce both the required sensor area for readout circuits and the data throughput for SPAD array, in this paper, we propose a snapshot ...
Chenxi Qiu   +6 more
doaj   +1 more source

Characterization of SPAD Array for Multifocal High-Content Screening Applications

open access: yesPhotonics, 2016
Current instruments used to detect specific protein-protein interactions in live cells for applications in high-content screening (HCS) are limited by the time required to measure the lifetime.
Anthony Tsikouras   +5 more
doaj   +1 more source

SPAD array chips with full frame readout for crystal characterization. [PDF]

open access: yesEJNMMI Phys, 2015
We present single photon sensitive 2D camera chips containing 88x88 avalanche photo diodes which can be read out in full frame mode with up to 400.000 frames per second. The sensors have an imaging area of ~5mm x 5mm covered by square pixels of ~56µm x 56µm with a ~55% fill factor in the latest chip generation. The chips contain a self triggering logic
Fischer P   +4 more
europepmc   +4 more sources

Highly Sensitive SPAD-Based Receiver for Dimming Control in LiFi Networks

open access: yesSensors, 2023
Visible light communication (VLC) is an emerging mode of wireless communication that supports both illumination and communication. One essential function of VLC systems is the dimming control, which requires a sensitive receiver for low-light conditions.
Mohamad Hijazi   +2 more
doaj   +1 more source

Efficient random number generation techniques for CMOS single-photon avalanche diode array exploiting fast time tagging units

open access: yesPhysical Review Research, 2020
This work presents a technique to produce random bits by exploiting single-photon time of arrival. Two quantum random number generator (QRNG) devices based on the field programmable gate array (FPGA) technology are presented: Randy, which uses one ...
Andrea Stanco   +5 more
doaj   +1 more source

Fast-Gated 16 × 1 SPAD Array for Non-Line-of-Sight Imaging Applications

open access: yesInstruments, 2020
In this paper we present a novel single-photon detector specifically designed for Non-Line-Of-Sight (NLOS) imaging applications within the framework of the DARPA REVEAL program.
Marco Renna   +5 more
doaj   +1 more source

Crosstalk Analysis of SiC Ultraviolet Single Photon Avalanche Photodiode Arrays

open access: yesIEEE Photonics Journal, 2019
Optical crosstalk is one of major problems limiting the performance of focal plane arrays based on single photon avalanche diodes (SPADs). In this work, for the first time the crosstalk characteristics of a 4H-SiC SPAD linear array are studied, which is ...
Heng Zhang   +8 more
doaj   +1 more source

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