Zhihan Jin , Bing Yu , Junwei Chu , Qing Kang , Jianjun Li
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引用次数: 0
Abstract
The paper proposes a true random calibration method for field programmable gate array (FPGA) based tapped delay line (TDL)-time-to-digital converters (TDCs), which is suitable for spontaneous parametric down-conversion (SPDC) systems. The Poisson distribution of single-photon detector (SPD) signals based on a Geiger-mode avalanche photodiode (GM-APD) in the SPDC system makes the SPD function as both a detection device and a quantum random pulse generator (QRPG), which can be used for the true random code density calibration of TDL-TDCs to obtain the nonlinear calibration factors. This method neither adds any system modules nor disrupts the measurement process. Instead, it improves the timeliness of TDL-TDC bin-width calibration in measurement environments featuring significant ambient variations, making it applicable to long-term continuous measurements and reducing measurement uncertainty.
期刊介绍：
Contributions are invited on novel achievements in all fields of measurement and instrumentation science and technology. Authors are encouraged to submit novel material, whose ultimate goal is an advancement in the state of the art of: measurement and metrology fundamentals, sensors, measurement instruments, measurement and estimation techniques, measurement data processing and fusion algorithms, evaluation procedures and methodologies for plants and industrial processes, performance analysis of systems, processes and algorithms, mathematical models for measurement-oriented purposes, distributed measurement systems in a connected world.
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