Results 71 to 80 of about 1,773 (163)
A Reconfigurable and Adaptive Macro-pixel Based SPAD Array Readout Circuit
IEEE Photonics JournalTo address the susceptibility of single-photon avalanche diodes (SPADs) to false triggering under strong background illumination and the lack of flexibility in traditional macro-pixel readout architectures, this paper proposes an FPGA-based adaptive and ...
Yiling Zeng +7 more
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A Compact High-Speed Active Quenching and Recharging Circuit for SPAD Detectors
IEEE Photonics Journal, 2020 A compact high-speed active quenching and recharging circuit (AQRC) is proposed for single-photon avalanche diode (SPAD) detectors fabricated in standard 0.18 μm CMOS technology.
Yue Xu, Jiyuan Lu, Zhong Wu
doaj +1 more source
APL Photonics, 2020 Wavelength-to-time mapping (WTM)—stretching ultrashort optical pulses in a dispersive medium such that the instantaneous frequency becomes time-dependent—is usually performed using a single-mode fiber.
Harikumar K. Chandrasekharan +6 more
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Large reconfigurable quantum circuits with SPAD arrays and multimode fibers
OpticaReprogrammable integrated optics provides a natural platform for tunable quantum photonic circuits, but faces challenges when high dimensions and high connectivity are involved. Here, we implement high-dimensional linear transformations on spatial modes of photons using wavefront shaping together with mode mixing in a multimode fiber, and measure ...
Makowski, Adrian +10 more
openaire +2 more sources
Time-resolved CMOS SPAD arrays: architectures, applications and perspectives
SPIE Proceedings, 2017 SPADs (Single-Photon Avalanche Diodes) are the viable photodetectors for most single-photon counting and photontiming applications. Some custom SPAD and many complementary metal-oxide semiconductor (CMOS) SPADs have been reported in literature, with quite different performance and some excelling in just few of them, but often at different operating ...
VILLA, FEDERICA ALBERTA +4 more
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SPAD-Based Detection System for Nanopore Sequencing Through Surface-Enhanced Raman Spectroscopy
IEEE Photonics JournalSurface-Enhanced Raman Spectroscopy (SERS) is a powerful technique for molecular identification, based on the correspondence between Raman spectral peaks and the characteristic vibrational modes of the analyte.
Veronica Storari +7 more
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Hybrid-integrated InGaAs/InP SPAD arrays for quantum communications
Optica QuantumPhotonic integration is a promising route to miniaturise the hardware of quantum key distribution (QKD), yet the monolithic integration of single-photon detectors remains a significant challenge. QKD receiver chips integrating superconducting detectors have been demonstrated, but their requirement for cryogenic cooling restricts their practical ...
Joseph A. Dolphin +9 more
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PhotonicsThe ability to detect individual photons with exquisite temporal precision has transformed single-photon avalanche diodes (SPADs) into indispensable tools across photonics, with quantum communication emerging as one of their most demanding frontiers.
Masoud Abrari +3 more
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Two-photon image-scanning microscopy with SPAD array and blind image reconstruction. [PDF]
Biomed Opt Express, 2020 Koho SV +12 more
europepmc +1 more source
Continuous-Wave SOFISM with SPAD Array Detection
We present a continuous-wave (CW) implementation of super-resolution optical fluctuation imaging with image scanning microscopy (SOFISM) using a pixelated single-photon avalanche diode (SPAD) detector camera. In a scanning-based geometry, SOFISM requires fluorescence fluctuations on timescales compatible with the pixel dwell time while maintaining ...
Beck, Lior M. +4 more
openaire +2 more sources