Dr. Fajie Duan Profile

Dr. Fajie Duan

Professor at Tianjin Univ

SPIE Involvement:

Author

Publications (23)

Proceedings Article | 8 July 2022 Paper

High precision real-time non-contact measurement of rotor-stator axial gap in narrow space based on swept-wavelength interferometry with 1kHz speed

Xiuming Li, Fajie Duan, Xiao Fu, Zhibo Liu, Ruijia Bao, Jiajia Jiang

Proceedings Volume 12282, 122820U (2022) https://doi.org/10.1117/12.2611997

KEYWORDS: Fourier transforms, Resistance, Laser sources, Precision measurement, Signal detection, Evolutionary algorithms, Interferometry, Sensors, Computer simulations, Interferometers

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Proceedings Article | 8 July 2022 Paper

A high-accuracy non-contact online measurement method of the rotor-stator axial gap based on frequency scanning interferometry

Ruijia Bao, Fajie Duan, Xiao Fu, Xiuming Li, Wenzheng Liu, Zhenxin Yu

Proceedings Volume 12282, 122820O (2022) https://doi.org/10.1117/12.2611270

KEYWORDS: Calibration, Distance measurement, Safety, Interference (communication), Optical testing, Wave plates, Interferometry, Signal to noise ratio, Temperature metrology, Optical fibers

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Proceedings Article | 8 July 2022 Paper

A high-precision calibration method of PSD in long-distance laser auto-collimation system

Wenzheng Liu, Cong Zhang, Fajie Duan, Xiao Fu, Ruijia Bao, Xiuming Li, Ming Yan

Proceedings Volume 12282, 122820T (2022) https://doi.org/10.1117/12.2611945

KEYWORDS: Calibration, Interferometers, Laser systems engineering, Laser applications, Distance measurement, Resistance, Receivers, Lithium, Sensors, Reflectors

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Proceedings Article | 8 July 2022 Paper

A novel method for reducing the defocus error of a five-degree-of-freedom measurement system

Cong Zhang, Wenzheng Liu, Fajie Duan, Xiao Fu, Xiuming Li, Ming Yan

Proceedings Volume 12282, 1228209 (2022) https://doi.org/10.1117/12.2611761

KEYWORDS: Sensors, Calibration, Error analysis, Mirrors, Distance measurement, Receivers, Prisms, Transmitters, Motion measurement, Beam splitters

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SPIE Journal Paper | 17 November 2021

Tip-timing accuracy improvement using optical fiber bundle probe with GRIN lens under varying blade tip clearance

Fengyao Zhi, Fajie Duan, Zhibo Liu, Xiuming Li, Guangyue Niu, Jiajia Jiang

OE, Vol. 60, Issue 11, 114103, (November 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.11.114103

KEYWORDS: GRIN lenses, Optical fibers, Error analysis, Collimation, Signal to noise ratio, Optical engineering, Interference (communication), Light emitting diodes, Light, Modulation

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Proceedings Article | 5 November 2020 Paper

Distance measurement based on SD-OCT using multi-mode fiber probe for light delivery and collection

Xiuming Li, Fajie Duan, Yong Yang, Weijiang Shen, Cong Zhang

Proceedings Volume 11568, 1156812 (2020) https://doi.org/10.1117/12.2579834

KEYWORDS: Fourier transforms, Spectral resolution, Single mode fibers, Interferometers, Optical coherence tomography, Charge-coupled devices, Spectroscopy, Distance measurement, Multimode fibers

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Proceedings Article | 12 March 2020 Paper

Multi-scale retinex image enhancement algorithm based on fabric defect database

Huang Wang, Fajie Duan, Weiti Zhou

Proceedings Volume 11438, 114380T (2020) https://doi.org/10.1117/12.2549245

KEYWORDS: Image information entropy, Defect detection, Image analysis, Detection and tracking algorithms, Light sources and illumination, Image processing, Image enhancement, Databases

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Proceedings Article | 20 December 2019 Paper

Theoretical analysis and ZEMAX simulation of the effect of target distance on collection efficiency of fiber probe

Xiuming Li, Tingting Huang, Fajie Duan

Proceedings Volume 11209, 1120955 (2019) https://doi.org/10.1117/12.2549988

KEYWORDS: Near field optics, Analytical research, Light sources, Optical fibers, Optical coherence tomography, Signal to noise ratio, Distance measurement, Zemax

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SPIE Journal Paper | 28 August 2017

Robust method for interest region description based on local intensity binary pattern

Yi Yang, Fajie Duan, Jiajia Jiang, Ling Ma, Hao Zheng

JEI, Vol. 26, Issue 04, 043025, (August 2017) https://doi.org/10.1117/12.10.1117/1.JEI.26.4.043025

KEYWORDS: Binary data, Image compression, 3D image processing, Object recognition, Sensors, Error analysis, Principal component analysis, Image analysis, Zoom lenses, Machine vision

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SPIE Journal Paper | 26 January 2016

Method to improve the blade tip-timing accuracy of fiber bundle sensor under varying tip clearance

Fajie Duan, Jilong Zhang, Jiajia Jiang, Haotian Guo, Dechao Ye

OE, Vol. 55, Issue 01, 014106, (January 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.1.014106

KEYWORDS: Sensors, Fiber optics sensors, Signal processing, Calibration, Vibrometry, Automatic control, Optical fibers, Optical engineering, Signal detection, Optical amplifiers

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Proceedings Article | 26 January 2016 Paper

Blade synchronous vibration measurement based on tip-timing at constant rotating speed without once-per-revolution sensor

Haotian Guo, Fajie Duan, Meng Wang

Proceedings Volume 9903, 990311 (2016) https://doi.org/10.1117/12.2211514

KEYWORDS: Current controlled current source, Precision measurement, Time metrology, Failure analysis, Calibration, Analytical research, Neon, Signal detection, Vibrometry, Sensors

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Proceedings Article | 6 March 2015 Paper

Phase compensation with fiber optic surface profile acquisition and reconstruction system

En Bo, Fajie Duan, Fan Feng, Changrong Lv, Fu Xiao, Tingting Huang

Proceedings Volume 9446, 94460V (2015) https://doi.org/10.1117/12.2180668

KEYWORDS: Interferometers, Phase shifts, Charge-coupled devices, Fringe analysis, Quantization, Fiber optics, Scanning probe microscopy, Phase compensation, Phase shift keying, Modulation

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SPIE Journal Paper | 4 March 2015

Numerical analysis of the blade tip-timing signal of a fiber bundle sensor probe

Haotian Guo, Fajie Duan, Zhonghai Cheng

OE, Vol. 54, Issue 03, 034103, (March 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.3.034103

KEYWORDS: Sensors, Fiber optics sensors, Mirrors, Numerical analysis, Vibrometry, Error analysis, Image transmission, Time metrology, Optical engineering, Image sensors

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Proceedings Article | 10 October 2013 Paper

fiber optic interferometer fringe projector using sinusoidal phase-modulating

Changrong Lv, Fajie Duan, Fukai Zhang, Xiaojie Duan, En Bo, Fan Feng

Proceedings Volume 8916, 89160V (2013) https://doi.org/10.1117/12.2035862

KEYWORDS: Phase interferometry, Phase modulation, Ferroelectric materials, Fiber optics, Feedback control, Interferometers, Projection systems, CMOS sensors, Modulation, Phase shift keying

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SPIE Journal Paper | 10 June 2013

Fiber-optic project-fringe interferometry with sinusoidal phase modulating system

Fukai Zhang, Fajie Duan, Changrong Lv, Xiaojie Duan, En Bo, Fan Feng

OE, Vol. 52, Issue 06, 065601, (June 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.6.065601

KEYWORDS: Fiber optics, Scanning probe microscopy, Interferometry, Phase interferometry, Modulation, Feedback control, Signal detection, Control systems, Analog electronics, Ferroelectric materials

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Proceedings Article | 30 November 2012 Paper

A new type fiber-optic accelerometer

Chang Yang, Hongpu Zhou, Min Zhang, Shangran Xie, Fajie Duan, Yanbiao Liao

Proceedings Volume 8561, 856113 (2012) https://doi.org/10.1117/12.999531

KEYWORDS: Structural sensing, Metals, Neodymium, Seismic sensors, Fiber Bragg gratings, Interferometry, Fiber optics tests, Fiber optics sensors, Fiber optics, Sensors

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Proceedings Article | 7 November 2012 Paper

The influence of parameters measurement error on demodulation performance of PGC arctangent algorithm in optical fiber hydrophone

Kai Wang, Qingping Shi, Zhiguang Dai, Changdong Tian, Shangran Xie, Chang Yang, Shan Cao, Fajie Duan, Min Zhang, Yanbiao Liao

Proceedings Volume 8421, 8421B6 (2012) https://doi.org/10.1117/12.974817

KEYWORDS: Optoelectronics, Multiplexing, Statistical analysis, Signal detection, Distortion, Modulation, Phase shift keying, Optical fibers, Demodulation, Error analysis

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SPIE Journal Paper | 15 May 2012

Turbine blade tip clearance measurement using a skewed dual-beam fiber optic sensor

De-chao Ye, Fa-jie Duan, Hao-tian Guo, Yangzong Li, Kai Wang

OE, Vol. 51, Issue 8, 081514, (May 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.8.081514

KEYWORDS: Calibration, Sensors, Fiber optics tests, Fiber optics sensors, Contamination, Fiber optics, Environmental sensing, Light sources, Optical engineering, Head

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Proceedings Article | 16 November 2011 Paper

Turbine blade tip clearance measurements using skewed dual optical beams of tip timing

De-chao Ye, Fa-jie Duan, Hao-tian Guo, Yangzong Li, Kai Wang

Proceedings Volume 8321, 83210W (2011) https://doi.org/10.1117/12.903907

KEYWORDS: Control systems, Collimation, Environmental sensing, Signal to noise ratio, Contamination, Fiber optics tests, Fiber optics sensors, Fiber optics, Calibration, Sensors

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Proceedings Article | 10 June 2006 Paper

Optimum design and error analysis of a monocular stereoscopic sensor used in three-dimensional particle image velocimetry

Li Yan, Fajie Duan, Liang Hu

Proceedings Volume 6344, 634430 (2006) https://doi.org/10.1117/12.694433

KEYWORDS: Particle image velocimetry, Image processing, CCD image sensors, 3D image processing, CCD cameras, Particles, Cameras, Error analysis, Mirrors, Sensors

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Proceedings Article | 10 June 2006 Paper

Research on optical fiber bundle displacement sensor with multi-grouped receiving fibers

Suzhi Cao, Fajie Duan, Zhiqiang Fang, Yuzhen Ma

Proceedings Volume 6344, 63442Y (2006) https://doi.org/10.1117/12.694429

KEYWORDS: Scattering, Data acquisition, Mathematical modeling, Semiconductor lasers, Light scattering, Reflectivity, Light sources, Light, Sensors, Optical fibers

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Proceedings Article | 9 September 2002 Paper

Digital processing technique for quasi-white light interference signal

Fajie Duan, Yuyang Sun, Shenghua Ye

Proceedings Volume 4920, (2002) https://doi.org/10.1117/12.481966

KEYWORDS: Sun, Error analysis, Signal detection, Sensors, Clocks, Light sources, Distortion, Detection theory, Signal processing, Digital signal processing

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Proceedings Article | 9 September 2002 Paper

10-m-range absolute measurement of fiber interference

Ming Zhong, Fajie Duan, Bei Yang, Yuyang Sun, Shenghua Ye

Proceedings Volume 4920, (2002) https://doi.org/10.1117/12.482019

KEYWORDS: Laminated object manufacturing, Fiber lasers, Michelson interferometers, Optical scanning systems, Optical switching, Distance measurement, Interferometers, Prisms, Calibration, Optical fibers

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Showing 5 of 23 publications

Conference Committee Involvement (2)

Advanced Sensor Systems and Applications V

5 November 2012 | Beijing, China

Advanced Sensor Systems and Applications IV

18 October 2010 | Beijing, China

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