Measurement and Correction of Linearity of Photon Counters

You-bo, 胡友勃 Hu; Jianjun, 李健军 Li; Maopeng, 夏茂鹏 Xia; Dong-yang, 高冬阳 Gao; Xiaobing, 郑小兵 Zheng

doi:10.3788/gzxb20164506.0604001

Cited by 4 publications

(1 citation statement)

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“…In the JUNO experiment and LHAASO-WCDA experiment, a PMT nonlinearity measurement method of dual LED light sources [11][12][13] was used to calculate the nonlinearity, by measuring the amount of charge output by PMT when two LEDs emit light separately and the amount of charge output by PMT when two LEDs emit light synchronously (hereafter referred to as the "A-B" method). The premise of this method is that the working state of the PMT is linear when the default light sources A and B work separately.…”

Section: Introductionmentioning

confidence: 99%

Study on nonlinearity measurement of photomultiplier tubes by continuous neutral optical attenuator

Yin¹,

Lin²,

Gao³

et al. 2023

International Conference on Optoelectronic Information and Functional Materials (OIFM 2023)

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The charge nonlinearity of the photomultiplier reflects the difference between the number of photoelectrons in the anode output signal and the number of photoelectrons in the cathode. In this study, the nonlinearity of the photomultiplier output range from tens of photoelectrons to hundreds of photoelectrons was tested by using a continuous light attenuator and compared with the test scheme of alternating luminescence with double LED light sources. The results show that the maximum nonlinearity measured by the optical attenuation method is 80% higher than that measured by the two-light source method, and the correctness of the optical attenuation method is verified by the numerical sampling method.

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Section: Introductionmentioning

confidence: 99%

Study on nonlinearity measurement of photomultiplier tubes by continuous neutral optical attenuator

Yin¹,

Lin²,

Gao³

et al. 2023

International Conference on Optoelectronic Information and Functional Materials (OIFM 2023)

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show abstract

Study on linearity of photomultiplier tubes by accurately controlling the incident light intensity

Yin,

Lin,

2023

Opt Quant Electron

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Dispersion independent long-haul photon-counting optical time-domain reflectometry

Zhang

Wang

et al. 2020

Opt. Lett.

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Photon counting optical time-domain reflectometry (PC-OTDR) based on the single photon detection is an effective scheme to attain the high spatial resolution for optical fiber fault monitoring. Currently, due to the spatial resolution of PC-OTDR is proportional to the pulse width of a laser beam, short laser pulses are essential for the high spatial resolution. However, short laser pulses have a large bandwidth, which would be widened by the dispersion of fiber, thereby causing inevitable deterioration in spatial resolution, especially for longhaul fiber links. In this letter, we propose a scheme of dispersion independent PC-OTDR based on an infinite backscatter technique. Our experimental results -with more than 50 km long fiber -show that the spatial resolution of the PC-OTDR system is independent with the total dispersion of the fiber under test. Our method provides an avenue for developing the long-haul PC-OTDR with high performance.

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Measurement and Correction of Linearity of Photon Counters

Cited by 4 publications

References 0 publications

Study on nonlinearity measurement of photomultiplier tubes by continuous neutral optical attenuator

Study on nonlinearity measurement of photomultiplier tubes by continuous neutral optical attenuator

Study on linearity of photomultiplier tubes by accurately controlling the incident light intensity

Dispersion independent long-haul photon-counting optical time-domain reflectometry

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