Prof. Jianxin Li Profile

Prof. Jianxin Li

at Nanjing Univ of Science and Technology

SPIE Involvement:

Author

Publications (24)

Proceedings Article | 30 April 2024 Paper

Autocalibration full-Stokes imaging polarimetry using a polarization array

Yixuan Liu, Jianxin Li

Proceedings Volume 13157, 131570B (2024) https://doi.org/10.1117/12.3014352

KEYWORDS: Wave plates, Polarization, Polarizers, Matrices, Polarimetry, Evolutionary algorithms, Imaging arrays, Simulations, Imaging systems, Artificial intelligence

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Proceedings Article | 4 April 2023 Paper

Research on optoelectronic properties of Zn doped In0.875Ga0.125As0.25P0.75

Yong Wang, Jianxin Li, Junju Zhang, Weiwei Sha, Weipeng Zhang, Yujie Du

Proceedings Volume 12617, 126173C (2023) https://doi.org/10.1117/12.2665928

KEYWORDS: Doping, Absorption, Crystals, Refractive index, Optical properties, Conduction bands, Optoelectronics

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Proceedings Article | 1 November 2021 Paper

Dynamic Fizeau interferometer for vibration optical measurement

Caiyun Yu, Yi Zong, Mingliang Duan, Jianxin Li

Proceedings Volume 12057, 120574X (2021) https://doi.org/10.1117/12.2607086

KEYWORDS: Fizeau interferometers, Phase measurement, Optical testing, Phase shifts

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Proceedings Article | 20 June 2021 Poster + Paper

Fizeau interferometer with double interference cavity for suppressing errors from vibration and air turbulence

Yi Zong, Mingliang Duan, Caiyun Yu, Jianxin Li

Proceedings Volume 11782, 117821J (2021) https://doi.org/10.1117/12.2592278

KEYWORDS: Interferometry, Beam splitters, Phase measurement, Mirrors, Wavefronts, Phase shifts, Phase retrieval, Optical testing, Interferometers, Fringe analysis

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Proceedings Article | 20 June 2021 Poster + Paper

Two-step iterative algorithm immune to tilt shifts for phase extraction

Mingliang Duan, Yi Zong, Caiyun Yu, Jianxin Li

Proceedings Volume 11782, 117821K (2021) https://doi.org/10.1117/12.2592283

KEYWORDS: Phase interferometry, Interferometry, Phase shifts, Modulation, Interferometers

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SPIE Journal Paper | 8 April 2021

Optical homogeneity measurement of parallel plates using nonuniform fast Fourier transform based on low-rank approximation and Taylor expansion

Renhui Guo, Chengxing Liu, Pingping Song, Zhishan Liao, Donghui Zheng, Jianxin Li, Yong He

OE, Vol. 60, Issue 04, 044102, (April 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.4.044102

KEYWORDS: Fourier transforms, Phase shifts, Optical testing, Interferometers, Photovoltaics, Optical engineering, Phase shifting, Computer simulations, Algorithm development, Wavefronts

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Proceedings Article | 18 December 2019 Paper

A high-precision wavelength calibration method based on Fourier transform imaging spectrometer

Yixuan Xu, Jianxin Li, Caixun Bai, Jie Liu, Yi Zong, Mingliang Duan

Proceedings Volume 11337, 1133708 (2019) https://doi.org/10.1117/12.2541545

KEYWORDS: Calibration, Fourier transforms, Spectroscopy, Spectral calibration, Interferometers, Sagnac interferometers

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Fourier Transform Imaging Spectrometer(FTIS) is an instrument cable of acquiring two-dimensional spatial information and one-dimensional spectral information. The FTIS has attracted much attention and is widely applied in the fields like military reconnaissance, remote sensing, biomedicine, environmental monitoring, etc. The FTIS acquires the spectral intensity in different wavelengths by performing Fourier transform on the white light interference signal of the target generated by the FTIS. The spectral curve obtained directly by Fourier transform reflects the relationship between the wavenumber order and the spectral intensity. So wavelength calibration is required to convert the above relationship into the relationship between the wavelength and the spectral intensity, which makes it more intuitive. Therefore, wavelength calibration is a necessary step for FTIS to recovery spectrum. The traditional wavelength calibration method can only get the wavenumber order in the range of integer because of the picket fence effect in Fourier transform. It will definitely ignore the fractional part which results in the inaccurate wavenumber order, which will directly affect the precision of the wavelength calibration result. In order to solve this problem, a high-precision wavelength calibration method based on Fourier transform imaging spectrometer is proposed according to the principle of FTIS and Fourier transform. This method can calculate the wavenumber order with the precision of percentile, which will reduce the error of wavelength calibration effectively. As a result, the precision of spectral calibration can be increased eventually. This method realizes high-precision wavelength calibration by the way of adding zero to the interference fringe in the spatial domain. The core of the method is getting a more precise wavenumber order. The brief process of obtaining wavenumber order is as follows: First, the FTIS acquires the interference fringe of a monochromatic laser. Second, the original interference fringe is extrapolated with zero. Third, the subtle spectrum can be obtained by performing Fourier transform on the extrapolated interference fringe. Finally, the precise wavenumber order is calculated by dividing the abscissa of the peak value by the extrapolation multiple. The principle of this method is investigated and related simulations are then carried out. The simulation results indicate that the wavenumber order calculated by the method have the same precision with the preset parameters, which illustrates that the method can calculate the wavenumber order more accurately. Therefore, the method can improve the precision of the spectral calibration. Besides, related experiments are also performed. The laser interference fringes of different wavelengths generated by the actual FTIS all apply the method to get the wavenumber orders in the frequency domain. Then a curve which is the wavelength calibration function is fitted using the discrete relation between the wavelengths and the wavenumber orders. A laser whose wavelength is known is measured by the FTIS with the wavelength calibration function got by the proposed method. The error of the wavelength measurement result is one-fifth of the traditional method. The simulations and the experiment results indicate that the proposed method can improve the precision of the wavelength calibration, which provides the theory and technology support for spectral measurement using FTIS. It also provides a possibility for the development of FTIS towards the super resolution direction.

Proceedings Article | 7 November 2018 Paper

Snapshot diffractive computational imaging spectroscopy

Yun Su, Yanli Liu, Haibo Zhao, Jianchao Jiao, Quansen Sun, Jianxin Li

Proceedings Volume 10832, 108321V (2018) https://doi.org/10.1117/12.2512033

KEYWORDS: Spectroscopy, Imaging systems, Sensors, Imaging spectroscopy, Cameras, Imaging technologies, Diffractive optical elements, Computational imaging, Hyperspectral imaging, Optical components

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SPIE Journal Paper | 23 December 2016

Vertex radius measurement of an off-axis parabola with a three-ball spherometer

Margaret Dominguez, Jianxin Li, Ping Zhou, James Burge

OE, Vol. 55, Issue 12, 124107, (December 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.12.124107

KEYWORDS: Monochromatic aberrations, Mirrors, Actinium, Astatine, Optical engineering, Aspheric lenses, Distance measurement, MATLAB, Tolerancing, Zernike polynomials

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SPIE Journal Paper | 16 December 2016

Absolute measurement for optical inhomogeneity of parallel plate using phase-shifting interferometry

Donghui Zheng, Lei Chen, Qinyuan Sun, Wenhua Zhu, Jinpeng Li, Jianxin Li

OE, Vol. 55, Issue 12, 124103, (December 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.12.124103

KEYWORDS: Optical testing, Reflectivity, Phase interferometry, Wavefronts, Interferometers, Refractive index, Photovoltaics, Lithium, Optical engineering, Error analysis

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Proceedings Article | 13 April 2015 Paper

Simulation of hyperspectral imaging based on tunable Fabry-Pérot interferometer

Chengmiao Liu, Jianxin Li, Yusheng Sun, Rihong Zhu

Proceedings Volume 9522, 95221P (2015) https://doi.org/10.1117/12.2180220

KEYWORDS: Interferometers, Spectral resolution, Imaging spectroscopy, Spectrometers, Hyperspectral imaging, Target detection, Hyperspectral simulation, Aerospace engineering, Astronomy, Modulation

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Proceedings Article | 13 April 2015 Paper

System design of Fourier transform imaging spectrometer using tunable lateral shearing splitter

Xin Meng, Jianxin Li, Caixun Bai, Rihong Zhu

Proceedings Volume 9522, 952219 (2015) https://doi.org/10.1117/12.2179843

KEYWORDS: Collimators, Spectroscopy, Fourier transforms, Imaging systems, Objectives, Modulation transfer functions, Glasses, Prisms, Spatial resolution, Interferometers

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Proceedings Article | 13 April 2015 Paper

Analysis of system parameters for interferometric imaging spectrometer

Caixun Bai, Jianxin Li, Xin Meng, Yan Shen, Rihong Zhu

Proceedings Volume 9522, 95221A (2015) https://doi.org/10.1117/12.2179847

KEYWORDS: Imaging systems, Spectroscopy, Interferometry, Mirrors, Sensors, Beam splitters, Lithium, Spectral resolution, Prototyping, Imaging spectroscopy

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Proceedings Article | 18 November 2014 Paper

System calibration of Stokes imaging polarimeter using Fourier series analysis

Xin Meng, Jianxin Li, Yumei Zhang, Rihong Zhu

Proceedings Volume 9299, 92991E (2014) https://doi.org/10.1117/12.2072234

KEYWORDS: Polarimetry, Polarization, Calibration, Imaging systems, Wave plates, Polarizers, Linear polarizers, Optical components, Mathematical modeling, Cameras

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Proceedings Article | 18 November 2014 Paper

Near-infrared Fourier transform imaging spectrometer for remote sensing

Jianxin Li, Xin Meng, Donglei Xu, Huaqing Song, Liu Wang, Rihong Zhu

Proceedings Volume 9298, 929812 (2014) https://doi.org/10.1117/12.2072236

KEYWORDS: Imaging systems, Fourier transforms, Spectroscopy, Imaging spectroscopy, Near infrared, Fringe analysis, Beam splitters, Sagnac interferometers, Interferometry, Shearing interferometers

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Proceedings Article | 18 November 2014 Paper

Tilt extraction of scanning Fabry-Pérot interferometer for solar telescope

Chengmiao Liu, Jianxin Li, Yusheng Sun, Rihong Zhu

Proceedings Volume 9298, 92981W (2014) https://doi.org/10.1117/12.2072246

KEYWORDS: Mirrors, Interferometers, Solar telescopes, Radon transform, Fringe analysis, Sun, Control systems, Image processing, Binary data, Optical filters

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Proceedings Article | 30 August 2013 Paper

Fourier transform imaging spectrometry using Sagnac interferometer

Jianxin Li, Wei Zhou, Xin Meng, Defang Liu, Rihong Zhu

Proceedings Volume 8910, 89101Y (2013) https://doi.org/10.1117/12.2034963

KEYWORDS: Imaging systems, Spectroscopy, Shearing interferometers, Interferometry, Sensors, Objectives, Fourier transforms, Target detection, Sagnac interferometers, Fringe analysis

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Proceedings Article | 21 August 2013 Paper

Full-Stokes imaging polarimetry using a combination of a retarder and a polarizer

Xin Meng, Jianxin Li, Yumei Zhang, Rihong Zhu

Proceedings Volume 8908, 890829 (2013) https://doi.org/10.1117/12.2034870

KEYWORDS: Polarimetry, Polarization, Wave plates, Fourier transforms, Imaging systems, Spectroscopy, Polarizers, Cameras, Staring arrays, Micro optics

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Proceedings Article | 22 June 2013 Paper

The relationships between system transfer function and power spectral density measurements

Xiaofeng Wang, Jianxin Li, Rihong Zhu, Rong Ji

Proceedings Volume 8769, 87692W (2013) https://doi.org/10.1117/12.2020952

KEYWORDS: Spatial frequencies, Interferometers, Wavefronts, Charge-coupled devices, Optical components, Numerical simulations, Mathematical modeling, Surface finishing, Spatial resolution, Image resolution

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Proceedings Article | 22 June 2013 Paper

Specular surface measurement based on fringe reflection and study on 3D shape reconstruction technique

Ronggang Zhu, Rihong Zhu, Qian Song, Jianxin Li

Proceedings Volume 8769, 87692S (2013) https://doi.org/10.1117/12.2018973

KEYWORDS: Reflection, 3D metrology, Charge-coupled devices, Picosecond phenomena, Mirrors, Laser optics, Optical testing, Deflectometry, Reflectivity, Calibration

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Proceedings Article | 22 June 2013 Paper

Three-dimensional shape measurement with wavelength-modulated laser base on fiber optic interferometer projection

Ronggang Zhu, Qian Song, Rihong Zhu, Jianxin Li

Proceedings Volume 8769, 876938 (2013) https://doi.org/10.1117/12.2018935

KEYWORDS: Interferometers, Phase shifts, Fiber optics, Calibration, 3D metrology, Phase measurement, Fiber lasers, Fiber optics tests, Optical fibers, Light sources

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Proceedings Article | 16 October 2012 Paper

A new method of calibrating the spatial coordinate coherence of shadowgraph-taking camera stations at the long distance with PSD

Jianxin Li, Xiaofeng Wang, Hua Shen, Rihong Zhu, Ya Huang, Sihai Rong, Yinxu Bian

Proceedings Volume 8416, 841627 (2012) https://doi.org/10.1117/12.975228

KEYWORDS: Calibration, Cameras, Laser optics, Coherence (optics), Visual process modeling, Laser systems engineering, Standards development, Laser marking, Imaging systems, Geometrical optics

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SPIE Journal Paper | 1 March 2011

Super-resolution spectral reconstruction based on minimum variance frequency estimation and linear fitting

Suning Li, Rihong Zhu, Jianxin Li

OE, Vol. 50, Issue 03, 033602, (March 2011) https://doi.org/10.1117/12.10.1117/1.3552652

KEYWORDS: Autoregressive models, Signal to noise ratio, Super resolution, Error analysis, Fourier transforms, Lithium, Optical engineering, Spectroscopy, Interference (communication), Signal processing

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Proceedings Article | 9 November 2010 Paper

Fiber Bragg grating strain sensor based on unbalanced Mach-Zehnder interferometer

Zhi-guo Wang, Jian-xin Li, Ri-hong Zhu

Proceedings Volume 7853, 78531R (2010) https://doi.org/10.1117/12.868793

KEYWORDS: Fiber Bragg gratings, Mach-Zehnder interferometers, Sensors, Finite element methods, Demodulation, Phase shifts, Sensing systems, Temperature metrology, Interferometers, Refractive index

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Showing 5 of 24 publications

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