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189 results on '"Zhang, Xinpu"'

7. Luminescent fiber UV detection.

Author

Li, Zeliu, Ren, Jiamai, Song, Ying, Yan, Wen, Zhang, Fenglin, Li, Xiaotong, Li, Ang, Wang, Yisong, Zhang, Xinpu, and Peng, Wei

Abstract

Herein, a luminescent fiber device for detecting ultraviolet (UV) intensity, which comprises a UV probe and a photoelectric converter, is proposed. The UV probe consists of a glass tube filled with luminescent material, which can be used for the efficient radiation conversion of UV radiation to the visible spectral region. The luminescent material, Y2O2S:Eu3+, is mixed with polydimethylsiloxane (PDMS) to form the core of the UV probe. Subsequently, the UV radiation response of the luminescent fiber device is investigated; the experimental results demonstrate that the direction-independent UV detection can be realized by using this luminescent fiber UV detection device while UV light is radiated radially along the UV probe. In addition, since partial discharge (PD) is accompanied by UV radiation, we hope to develop a spectral PD detection scheme based on optical fiber technology, which can broaden the role of optical technology and optical fiber technology in the field of PD detection. [ABSTRACT FROM AUTHOR]

Published
2024
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8. Customizable miniaturized SPR instrument

Author

Zhang, Xinpu, primary, Li, Zeliu, additional, Yan, Wen, additional, Li, Ang, additional, Zhang, Fenglin, additional, Li, Xiaotong, additional, Lu, Mengdi, additional, and Peng, Wei, additional

Published
2023
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21. DWI-Assisted BOTDA for Dynamic Sensing

Author

Zhou, Yin, primary, Yan, Lianshan, additional, He, Haijun, additional, Li, Zonglei, additional, Qian, Heng, additional, Zhang, Xinpu, additional, Luo, Bin, additional, and Pan, Wei, additional

Published
2021
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37. A novel process for comprehensive utilization of vanadium slag

Author

Wen-jun Tan, Tao Du, Fan Yang, Zhang Xinpu, and Liying Liu

Subjects
Scanning electron microscope, Chemistry, Mechanical Engineering, Metallurgy, High selectivity, Metals and Alloys, Infrared spectroscopy, Vanadium, chemistry.chemical_element, 02 engineering and technology, 021001 nanoscience & nanotechnology, 020501 mining & metallurgy, Adsorption, 0205 materials engineering, Chemical engineering, Geochemistry and Petrology, Mechanics of Materials, Metallic materials, Materials Chemistry, 0210 nano-technology, Zeolite
Abstract

Traditional processes for treating vanadium slag generate a huge volume of solid residue and a large amount of harmful gas, which cause serious environmental problems. In this study, a new process for the comprehensive utilization of vanadium slag was proposed, wherein zeolite A and a V2O5/TiO2 system were synthesized. The structural properties of the as-synthesized zeolite A and the V2O5/TiO2 system were characterized using various experimental techniques, including X-ray diffraction, X-ray fluorescence, scanning electron microscopy, and infrared spectroscopy. The results reveal that zeolite A and the V2O5/TiO2 system are successfully obtained with high purity. The results of gas adsorption measurements indicate that the prepared zeolite A exhibits high selectivity for CO2 over N2 and is a candidate material for CO2 capture from flue-gas streams.

Published
2016

38. Effect and Elimination of Polarization Random Noise in Golay-Coded Brillouin Optical Time Domain Analysis Fiber Sensors

Author

何海军 He Haijun, 周银 Zhou Yin, 罗斌 Luo Bin, 李宗雷 Li Zonglei, 张信普 Zhang Xinpu, 闫连山 Yan Lianshan, 潘玮 Pan Wei, and 蒋朋 Jiang Peng

Subjects
Brillouin zone, Physics, Optics, Binary Golay code, business.industry, Random noise, Time domain, business, Polarization (waves), Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2020

45. The influence of pulse parameters on the performance of time-gated digital optical frequency domain reflectometer.

Author

YI Shoutian, ZHANG Zhiyong, HE Haijun, ZHANG Xinpu, and QIAN Heng

Abstract

In order to optimize the parameter settings of the time-gated digital optical frequency domain reflectometer ( TGD-OFDR) system, an experimental system was built based on the optical pulse compression reflectometry. Theoretical analysis and experimental verification were carried out, and simulation and experimental data were obtained. Both of the results show that the system signal-to-noise ratio (SNR) is only related to the chirp rate. When the pulse power of the probe light and the signal power of the local oscillator light have been set, the chirp rate increases with the SNR decreasing. And the phase noise decreases firstly and then increases with the increase of the pulse width with the minimum value of about 2. 5μs when the sweep range keeps 80MHz. Hence, the optimal phase noise (minimum value) can be obtained by adjusting the pulse width with the maximum sweep frequency range of the system remains unchanged. The results have certain reference significance to the parameter optimization of the TGD-OFDR system design. [ABSTRACT FROM AUTHOR]

Published
2021
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46. Arbitrary spectral synthesis and waveform generation with HiBi fiber loop mirrors

Author

He, Haijun, Shao, Li-Yang, Wang, Chao, Luo, Bin, Zou, Xihua, Zhang, Xinpu, Pan, Wei, Yan, Lianshan, He, Haijun, Shao, Li-Yang, Wang, Chao, Luo, Bin, Zou, Xihua, Zhang, Xinpu, Pan, Wei, and Yan, Lianshan

Abstract

An arbitrary spectral synthesis scheme with parallel-connecting high-birefringence fiber loop mirrors (HiBi-FLMs) based on Fourier synthesis theory has been proposed and demonstrated. Three typical spectra of triangle, rectangle and sawtooth shape have been synthesized by implementing only four HiBi-FLMs. The experimental results are in good agreement with theoretical simulations with a goodness of fit of 0.9565. Furthermore, higher precise optical spectrum with narrower bandwidth can be obtained by adopting longer polarization- maintaining fiber and more sections of HiBi-FLMs. Besides, a typical application of arbitrary waveform generation has been implemented. By incorporating with frequency-to- time mapping, triangle- and sawtooth-shaped electrical pulses with repetition rate of 1 GHz and pulse width of ~860 ps have been generated

Published
2018

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