Mr. Junhao Zhu Profile

Junhao Zhu

at Tsinghua Univ Shenzhen International Graduate School

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Author

Publications (8)

Proceedings Article | 19 December 2022 Poster + Paper

A polarization adjustment module for frequency aliasing of heterodyne grating interferometer

Lyuye Gao, Junhao Zhu, Guangyao Huang, Guochao Wang, Shengtong Wang, Kai Ni, Xiaohao Wang, Xinghui Li

Proceedings Volume 12319, 123191P (2022) https://doi.org/10.1117/12.2643934

KEYWORDS: Polarization, Interferometers, Heterodyning, Sensors, Polarizers, Beam splitters, Optical components, Wave plates, Signal detection

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Proceedings Article | 19 December 2022 Presentation + Paper

Modeling and test of an absolute four-degree-of-freedom (DOF) grating encoder

Shengtong Wang, Junhao Zhu, Ningning Shi, Linbin Luo, Yanxiang Wen, Xinghui Li

Proceedings Volume 12319, 123190I (2022) https://doi.org/10.1117/12.2643904

KEYWORDS: Interferometers, Autocollimators, Diffraction gratings, Autocollimation, Sensors, Reflectors, Prototyping, Photodetectors, Optics manufacturing

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Proceedings Article | 8 July 2022 Paper

FPGA displacement calculation platform and test of two-phase grating interference encoder

Ningning Shi, Junhao Zhu, Shengtong Wang, Yaodong Han, Kangning Yu, Xinghui Li, Xiaohao Wang

Proceedings Volume 12282, 1228216 (2022) https://doi.org/10.1117/12.2616415

KEYWORDS: Field programmable gate arrays, Computer programming, Signal processing, Data conversion, Optical filters, Filtering (signal processing), Digital signal processing, Interfaces, Diffraction gratings, Logic

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Proceedings Article | 8 July 2022 Paper

Method and system for phase measurement of the heterodyne interference system

Yi Yang, Guochao Wang, Junhao Zhu, Shengtong Wang, Yonggui Wu, Xinghui Li

Proceedings Volume 12282, 122821D (2022) https://doi.org/10.1117/12.2616517

KEYWORDS: Phase measurement, Field programmable gate arrays, Bandpass filters, Signal processing, Heterodyning, Filtering (signal processing), Electronic filtering, Clocks, Measurement devices, Digital signal processing

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Proceedings Article | 8 July 2022 Paper

Heterodyne three-degree-of-freedom grating interferometer for ultra-precision positioning of lithography machine

Junhao Zhu, Guochao Wang, Gaopeng Xue, Qian Zhou, Xinghui Li

Proceedings Volume 12282, 1228204 (2022) https://doi.org/10.1117/12.2616683

KEYWORDS: Interferometers, Heterodyning, Lithography, Laser systems engineering, Optical testing, Mirrors, Polarization, Fiber lasers, Homodyne detection, Beam splitters

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Proceedings Article | 9 October 2021 Poster + Paper

A real-time processing system for dual-channel six-degree-of-freedom grating ruler based on FPGA

Ningning Shi, Shengtong Wang, Gaopeng Xue, Mengfang Liu, Yaodong Han, Junhao Zhu, Kai Ni, Xiaohao Wang, Xinghui Li

Proceedings Volume 11895, 1189518 (2021) https://doi.org/10.1117/12.2602239

KEYWORDS: Field programmable gate arrays, Signal processing, Computer programming, Digital signal processing, Optical filters, Data processing, Filtering (signal processing), Sensors, Phase measurement, Optical design

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Proceedings Article | 9 October 2021 Paper

A simplified two-phase differential decoding algorithm for high precision grating encoder

Junhao Zhu, Kangning Yu, Gaopeng Xue, Ningning Shi, Qian Zhou, Xiaohao Wang, Xinghui Li

Proceedings Volume 11899, 118990F (2021) https://doi.org/10.1117/12.2602230

KEYWORDS: Signal processing, Diffraction gratings, Magnetism, Electronic filtering, Photodetectors, Optical components, Environmental sensing, Beam splitters, Optical filters

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Proceedings Article | 9 October 2021 Poster + Paper

An improved signal filtering strategy based on EMD algorithm for ultrahigh precision grating encoder

Junhao Zhu, Kangning Yu, Gaopeng Xue, Qian Zhou, Xiaohao Wang, Xinghui Li

Proceedings Volume 11902, 119021G (2021) https://doi.org/10.1117/12.2602201

KEYWORDS: Computer programming, Electronic filtering, Optical filters, Signal processing, Filtering (signal processing), Interference (communication), Bandpass filters, Interferometers, Linear filtering, Signal detection

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Showing 5 of 8 publications

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