Paper
4 February 2013 InGaAs/InP SPAD photon-counting module with auto-calibrated gate-width generation and remote control
Alberto Tosi, Alessandro Ruggeri, Andrea Bahgat Shehata, Adriano Della Frera, Carmelo Scarcella, Simone Tisa, Andrea Giudice
Author Affiliations +
Abstract
We present a photon-counting module based on InGaAs/InP SPAD (Single-Photon Avalanche Diode) for detecting single photons up to 1.7 μm. The module exploits a novel architecture for generating and calibrating the gate width, along with other functions (such as module supervision, counting and processing of detected photons, etc.). The gate width, i.e. the time interval when the SPAD is ON, is user-programmable in the range from 500 ps to 1.5 μs, by means of two different delay generation methods implemented with an FPGA (Field-Programmable Gate Array). In order to compensate chip-to-chip delay variation, an auto-calibration circuit picks out a combination of delays in order to match at best the selected gate width. The InGaAs/InP module accepts asynchronous and aperiodic signals and introduces very low timing jitter. Moreover the photon counting module provides other new features like a microprocessor for system supervision, a touch-screen for local user interface, and an Ethernet link for smart remote control. Thanks to the fullyprogrammable and configurable architecture, the overall instrument provides high system flexibility and can easily match all requirements set by many different applications requiring single photon-level sensitivity in the near infrared with very low photon timing jitter.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alberto Tosi, Alessandro Ruggeri, Andrea Bahgat Shehata, Adriano Della Frera, Carmelo Scarcella, Simone Tisa, and Andrea Giudice "InGaAs/InP SPAD photon-counting module with auto-calibrated gate-width generation and remote control", Proc. SPIE 8631, Quantum Sensing and Nanophotonic Devices X, 86311G (4 February 2013); https://doi.org/10.1117/12.2004863
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KEYWORDS
Field programmable gate arrays

Sensors

Picosecond phenomena

Head

Human-machine interfaces

Calibration

Control systems

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