Semiconductor Optoelectronics, Volume. 44, Issue 3, 376(2023)

Scalable Time Jitter Measurement Module for SNSPD System

ZHAO Minghao1... ZHANG Xingyu2,3, ZHANG Chengjun3, Lü Chaolin3, CHEN Dai3, WAN Xuxiao3, and WU Junjie14,* |Show fewer author(s)
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  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
  • 4[in Chinese]
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    A scalable time jitter measurement module for SNSPDs was designed to address the diverse application requirements of superconducting nanowire single photon detectors (SNSPDs). Based on the analysis of the time jitter measurement principle of the SNSPD system, a digitization unit, a time-to-digital conversion (TDC) unit and a field-programmable gate array (FPGA) unit were designed to digitize the SNSPD output signal, measure the time information and read out the data. The resolution, linearity and time accuracy of the TDC unit of the module were calibrated. The test results show that the resolution of the TDC unit is better than 55 ps, the measurement data is linear and the time accuracy within 100 ns is less than 36 ps. By combining the practical SNSPD system, a time jitter characterization of about 100 ps is achieved. The feasibility of this module for time jitter measurements in SNSPD systems is verified by comparison with a commercial time-correlated single photon counting (TCSPC) module.

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    ZHAO Minghao, ZHANG Xingyu, ZHANG Chengjun, Lü Chaolin, CHEN Dai, WAN Xuxiao, WU Junjie. Scalable Time Jitter Measurement Module for SNSPD System[J]. Semiconductor Optoelectronics, 2023, 44(3): 376

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    Paper Information

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    Received: Jan. 31, 2023

    Accepted: --

    Published Online: Nov. 26, 2023

    The Author Email: Junjie WU (wjj@cwxu.edu.cn)

    DOI:10.16818/j.issn1001-5868.2023013101

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