Search Results - "Guojie Tu"

The Development of an \Phi -OTDR System for Quantitative Vibration Measurement by Guojie Tu, Xuping Zhang, Yixin Zhang, Fan Zhu, Lan Xia, Nakarmi, Bikash

“…Phase sensitive optical time domain reflectometry is suitable for vibration detection due to its high sensitivity. However, for conventional…”
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Laser Velocimetry for the In Situ Sensing of Deep-Sea Hydrothermal Flow Velocity by Sun, Jingjing, Zhang, Lei, Tu, Guojie, Zhen, Shenglai, Cao, Zhigang, Zhang, Guosheng, Yu, Benli

“…Laser Doppler velocimetry (LDV) based on a differential laser Doppler system has been widely used in fluid mechanics to measure particle velocity. However, the…”
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Enhancement of Signal Identification and Extraction in a Φ-OTDR Vibration Sensor by Tu, Guojie, Yu, Benli, Zhen, Shenglai, Qian, Kai, Zhang, Xuping

“…Phase-sensitive optical time domain reflectometry Φ-OTDR has been widely used in vibration sensing applications due to its high sensitivity and distributed…”
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Source Location and Suppression of Phase Induced Intensity Noise in Fiber-Based Continuous-Wave Coherent Doppler Lidar by Tang, Zheng, Wang, Mengfan, Feng, Wei, Sun, Xiaoyuan, Yu, Benli, Qian, Kai, Chen, Ping, Tu, Guojie

“…The phase induced intensity noise (PIIN) may seriously reduce the signal-to-noise ratio (SNR) of continuous-wave coherent Doppler lidar (CW-CDL), thereby…”
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Research on technology of 1550nm all-fiber continuous wave coherent Doppler wind lidar by Tang, Zheng, Feng, Wei, Wang, Mengfan, Yu, Benli, Tu, Guojie

“…In order to obtain the telemetry data of wind field 80 m ahead of the wind turbine, an all-fiber continuous wave coherent Doppler lidar (CW-CDL) system is…”
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Analysis of Random Noise and Long-Term Drift for Tunable Diode Laser Absorption Spectroscopy System at Atmospheric Pressure by Guojie Tu, Fengzhong Dong, Yu Wang, Culshaw, Brian, Zhirong Zhang, Tao Pang, Hua Xia, Bian Wu

“…The random noise and the slow drift, which respectively limit the signal-to-noise ratio and the long-term stability, of a wavelength modulated tunable diode…”
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High Precision Phase-OFDR Scheme Based on Fading Noise Suppression by Feng, Wei, Wang, Mengfan, Jia, Hailun, Xie, Kang, Tu, Guojie

“…In recent years, Optical Frequency Domain Reflectometry (OFDR) has been able to realize strain measurement with high sensitivity and high spatial resolution…”
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Fading Noise Suppression in Φ-OTDR Based on Nearest Neighbor Analysis by Tu, Guojie, Zhao, Mengmeng, Tang, Zheng, Qian, Kai, Yu, Benli

“…Phase sensitive optical time domain reflectometry (Φ-OTDR) has been widely used in the precise acquisition of the vibration signal along the sensing optical…”
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Wide Measurement Range Distributed Strain Sensing With Phase-Accumulation Optical Frequency Domain Reflectometry by Wang, Mengfan, Feng, Wei, Xie, Kang, Jia, Hailun, Lin, Jiping, Tu, Guojie

“…In this paper, a wide measurement range strain sensing method based on phase-accumulation optical frequency domain reflectometry (OFDR) is proposed. Different…”
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Adaptive Dual-Harmonic Switching WMS for CO2 Measurement over a Wide Dynamic Range by Li, Zifei, Hu, Yunfan, Wang, Xianyi, Tu, Guojie, Yu, Benli, Zhou, Sheng

“…A Dual-Harmonic Switching Wavelength Modulation Spectroscopy (DHS-WMS) technique has been proposed for gas sensing. The optimal signal-to-noise ratio (SNR) is…”
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Temperature Measurement based on Phase-OFDR with a Narrow Frequency Scanning Range by Cao, Lei, Wu, Jiajun, Li, Zhenjia, Cao, Xuan, Yu, Jinchang, Zhang, Yiming, Lu, Leiming, Jia, Hailun, Xie, Kang, Tu, Guojie

“…In recent years, fiber-optic distributed temperature sensors (DTS) based on optical frequency domain reflectometry (OFDR) have shown high accuracy and spatial…”
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Enlarging Dynamic Strain Range in UWFBG Array-Based Φ-OTDR Assisted With Polarization Signal by Hong, Rui, Wang, Feng, Liu, Yu, Tu, Guojie, Liu, Zhen, Zhou, Jianxin, Zhang, Yixin, Zhang, Xuping

“…Phase-sensitive optical time-domain reflectometry (<inline-formula> <tex-math notation="LaTeX">\Phi </tex-math></inline-formula>-OTDR) measures the dynamic…”
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Adaptive Dual-Harmonic Switching WMS for CO 2 Measurement over a Wide Dynamic Range by Li, Zifei, Hu, Yunfan, Wang, Xianyi, Tu, Guojie, Yu, Benli, Zhou, Sheng

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Rapid Hot-Spot Detection Based on Weak Reflection Point and Phase Demodulation OFDR by Xie, Kang, Wang, Mengfan, Feng, Wei, Jia, Hailun, Cao, Lei, Wu, Jiajun, Tu, Guojie

“…Quenching protection is one of the key challenges for the operation of high-temperature superconductor (HTS) magnets, and optical frequency domain reflection…”
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Enhanced sensitivity of fiber laser sensor with Brillouin slow light by Qian, Kai, Wang, Fan, Wang, Rui, Zhen, Shenglai, Wu, Xuqiang, Tu, Guojie, Zhang, Tingting, Yu, Benli, Zhan, Li

“…We proposed and experimentally demonstrated a new scheme for enhancing the sensitivity of a fiber laser sensor using Brillouin slow light. The Brillouin laser…”
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A new measurement method for the optical feedback coupling factor and linewidth enhancement factor based on self-mixing interferometry by Zhao, Yunkun, Liu, Keyan, Ren, Guoyang, Du, Zhengting, Yu, Qi, Li, Hongtao, Tu, Guojie, Xu, Feng, Hu, Zhijia, Lu, Liang

“…•A new method is proposed to measure C and α-factor based on the self-mixing effect.•Parameter C and α are obtained by tracking LETA area of the jumping…”
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Investigation on the performance of 10 Gb/s on uplink space optical communication system based on MSK scheme by Mi Li, Bowen Li, Xuping Zhang, Yuejiang Song, Yingjie Zhang, Guojie Tu

“…As the technique of space optical communication is developing, the requirement of higher data rate has attracted more attention. Currently, low data rate has…”
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The Development of an [Formula Omitted]-OTDR System for Quantitative Vibration Measurement by Tu, Guojie, Zhang, Xuping, Zhang, Yixin, Zhu, Fan, Xia, Lan, Nakarmi, Bikash

“…Phase sensitive optical time domain reflectometry is suitable for vibration detection due to its high sensitivity. However, for conventional…”
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Novel method for correcting light intensity fluctuation in the TDLAS system by 涂郭结 王煜 董凤忠 夏滑 庞涛 张志荣 吴边

“…A novel method for online correction of light intensity fluctuation in a practical tunable diode laser ab-sorption spectroscopy（TDLAS）system with wavelength…”
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Large Dynamic Strain Measurement in Φ-OTDR Based on Ultra-Weak FBG Array by Hong, Rui, Wang, Feng, Liu, Yu, Tu, Guojie, Liu, Zhen, Zhou, Jianxin, Zhang, Yixin, Zhang, Xuping

“…We propose a new method which can measure large dynamic strain in \Phi -OTDR based on ultra-weak FBG array, where the wrongly phase wrapping is corrected by…”
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