22 February 2018 Highly efficient router-based readout algorithm for single-photon-avalanche-diode imagers for time-correlated experiments
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Proceedings Volume 10539, Photonic Instrumentation Engineering V; 105390B (2018) https://doi.org/10.1117/12.2287794
Event: SPIE OPTO, 2018, San Francisco, California, United States
Abstract
Time-Correlated Single Photon Counting (TCSPC) is a powerful tool that permits to record extremely fast optical signals with a precision down to few picoseconds. On the other hand, it is recognized as a relatively slow technique, especially when a large time-resolved image is acquired exploiting a single acquisition channel and a scanning system.

During the last years, much effort has been made towards the parallelization of many acquisition and conversion chains. In particular, the exploitation of Single-Photon Avalanche Diodes in standard CMOS technology has paved the way to the integration of thousands of independent channels on the same chip.

Unfortunately, the presence of a large number of detectors can give rise to a huge rate of events, which can easily lead to the saturation of the transfer rate toward the elaboration unit. As a result, a smart readout approach is needed to guarantee an efficient exploitation of the limited transfer bandwidth.

We recently introduced a novel readout architecture, aimed at maximizing the counting efficiency of the system in typical TCSPC measurements. It features a limited number of high-performance converters, which are shared with a much larger array, while a smart routing logic provides a dynamic multiplexing between the two parts.

Here we propose a novel routing algorithm, which exploits standard digital gates distributed among a large 32x32 array to ensure a dynamic connection between detectors and external time-measurement circuits.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. Cominelli, A. Cominelli, G. Acconcia, G. Acconcia, F. Caldi, F. Caldi, P. Peronio, P. Peronio, M. Ghioni, M. Ghioni, I. Rech, I. Rech, } "Highly efficient router-based readout algorithm for single-photon-avalanche-diode imagers for time-correlated experiments", Proc. SPIE 10539, Photonic Instrumentation Engineering V, 105390B (22 February 2018); doi: 10.1117/12.2287794; https://doi.org/10.1117/12.2287794
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