Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering

Ziyu Wang; Zilong Zhao; Yusong Mu

doi:doi:10.11648/j.ijssn.20251302.15

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Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering

Ziyu Wang, Zilong Zhao, Yusong Mu^*

Published in International Journal of Sensors and Sensor Networks (Volume 13, Issue 2)

Received: 14 October 2025 Accepted: 24 October 2025 Published: 26 November 2025

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Abstract

This paper proposes a phased array photodetector chip scheme based on phase difference filtering for grating encoders, aiming to address the bottleneck of traditional grating encoders in balancing precision and miniaturization. The core innovation of the proposed method lies in its optimized signal processing and structural design. The method further subdivides each field in the four-field column method into multiple row combinations with different phases, and weakens high-order harmonic components through the phase arrangement relationship between row combinations, thereby improving the quality of Moiré fringe signals. It meets the demand for a compact array layout while ensuring good photoelectric conversion efficiency. To ensure the scheme’s feasibility and integration, the research adopts a cross-disciplinary integrated approach that combines optics, mechanics, and electronics. It integrates technologies such as phase difference filtering and optoelectronic integration into the development of photodetectors, and designs a dedicated integrated optoelectronic chip based on the developed detector. The research verifies the scheme through a rigorous three-step process: theoretical modeling, structural innovation (to design the folded-line array layout for compactness), and process verification (to ensure compatibility with standard semiconductor manufacturing processes). Simulation results confirm that the developed folded-line array photodetector exhibits excellent orthogonality in photoelectric signal conversion, a key indicator of measurement accuracy. Meanwhile, the chip’s compact array layout reduces its overall volume by approximately 30% compared to traditional discrete detector modules, while maintaining a high photoelectric conversion efficiency of over 85%.

Published in	International Journal of Sensors and Sensor Networks (Volume 13, Issue 2)
DOI	10.11648/j.ijssn.20251302.15
Page(s)	65-70
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2025. Published by Science Publishing Group

Keywords

Grating Encoder, Phase Difference Filtering, Moiré Fringe Signal, Photodetector

References

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APA Style

Wang, Z., Zhao, Z., Mu, Y. (2025). Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering. International Journal of Sensors and Sensor Networks, 13(2), 65-70. https://doi.org/10.11648/j.ijssn.20251302.15

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ACS Style

Wang, Z.; Zhao, Z.; Mu, Y. Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering. Int. J. Sens. Sens. Netw. 2025, 13(2), 65-70. doi: 10.11648/j.ijssn.20251302.15

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AMA Style

Wang Z, Zhao Z, Mu Y. Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering. Int J Sens Sens Netw. 2025;13(2):65-70. doi: 10.11648/j.ijssn.20251302.15

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@article{10.11648/j.ijssn.20251302.15,
  author = {Ziyu Wang and Zilong Zhao and Yusong Mu},
  title = {Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering
},
  journal = {International Journal of Sensors and Sensor Networks},
  volume = {13},
  number = {2},
  pages = {65-70},
  doi = {10.11648/j.ijssn.20251302.15},
  url = {https://doi.org/10.11648/j.ijssn.20251302.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijssn.20251302.15},
  abstract = {This paper proposes a phased array photodetector chip scheme based on phase difference filtering for grating encoders, aiming to address the bottleneck of traditional grating encoders in balancing precision and miniaturization. The core innovation of the proposed method lies in its optimized signal processing and structural design. The method further subdivides each field in the four-field column method into multiple row combinations with different phases, and weakens high-order harmonic components through the phase arrangement relationship between row combinations, thereby improving the quality of Moiré fringe signals. It meets the demand for a compact array layout while ensuring good photoelectric conversion efficiency. To ensure the scheme’s feasibility and integration, the research adopts a cross-disciplinary integrated approach that combines optics, mechanics, and electronics. It integrates technologies such as phase difference filtering and optoelectronic integration into the development of photodetectors, and designs a dedicated integrated optoelectronic chip based on the developed detector. The research verifies the scheme through a rigorous three-step process: theoretical modeling, structural innovation (to design the folded-line array layout for compactness), and process verification (to ensure compatibility with standard semiconductor manufacturing processes). Simulation results confirm that the developed folded-line array photodetector exhibits excellent orthogonality in photoelectric signal conversion, a key indicator of measurement accuracy. Meanwhile, the chip’s compact array layout reduces its overall volume by approximately 30% compared to traditional discrete detector modules, while maintaining a high photoelectric conversion efficiency of over 85%.
},
 year = {2025}
}

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TY  - JOUR
T1  - Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering

AU  - Ziyu Wang
AU  - Zilong Zhao
AU  - Yusong Mu
Y1  - 2025/11/26
PY  - 2025
N1  - https://doi.org/10.11648/j.ijssn.20251302.15
DO  - 10.11648/j.ijssn.20251302.15
T2  - International Journal of Sensors and Sensor Networks
JF  - International Journal of Sensors and Sensor Networks
JO  - International Journal of Sensors and Sensor Networks
SP  - 65
EP  - 70
PB  - Science Publishing Group
SN  - 2329-1788
UR  - https://doi.org/10.11648/j.ijssn.20251302.15
AB  - This paper proposes a phased array photodetector chip scheme based on phase difference filtering for grating encoders, aiming to address the bottleneck of traditional grating encoders in balancing precision and miniaturization. The core innovation of the proposed method lies in its optimized signal processing and structural design. The method further subdivides each field in the four-field column method into multiple row combinations with different phases, and weakens high-order harmonic components through the phase arrangement relationship between row combinations, thereby improving the quality of Moiré fringe signals. It meets the demand for a compact array layout while ensuring good photoelectric conversion efficiency. To ensure the scheme’s feasibility and integration, the research adopts a cross-disciplinary integrated approach that combines optics, mechanics, and electronics. It integrates technologies such as phase difference filtering and optoelectronic integration into the development of photodetectors, and designs a dedicated integrated optoelectronic chip based on the developed detector. The research verifies the scheme through a rigorous three-step process: theoretical modeling, structural innovation (to design the folded-line array layout for compactness), and process verification (to ensure compatibility with standard semiconductor manufacturing processes). Simulation results confirm that the developed folded-line array photodetector exhibits excellent orthogonality in photoelectric signal conversion, a key indicator of measurement accuracy. Meanwhile, the chip’s compact array layout reduces its overall volume by approximately 30% compared to traditional discrete detector modules, while maintaining a high photoelectric conversion efficiency of over 85%.

VL  - 13
IS  - 2
ER  -

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Author Information

Ziyu Wang

School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun, China

Contact Email
Zilong Zhao

School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun, China

Contact Email
Yusong Mu

Modern Industry College, Jilin Jianzhu University, Changchun, China

Contact Email

http://orcid.org/0000-0003-1172-6387

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Plain Text BibTeX RIS

APA Style

Wang, Z., Zhao, Z., Mu, Y. (2025). Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering. International Journal of Sensors and Sensor Networks, 13(2), 65-70. https://doi.org/10.11648/j.ijssn.20251302.15

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ACS Style

Wang, Z.; Zhao, Z.; Mu, Y. Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering. Int. J. Sens. Sens. Netw. 2025, 13(2), 65-70. doi: 10.11648/j.ijssn.20251302.15

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AMA Style

Wang Z, Zhao Z, Mu Y. Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering. Int J Sens Sens Netw. 2025;13(2):65-70. doi: 10.11648/j.ijssn.20251302.15

Copy | Download

@article{10.11648/j.ijssn.20251302.15,
  author = {Ziyu Wang and Zilong Zhao and Yusong Mu},
  title = {Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering
},
  journal = {International Journal of Sensors and Sensor Networks},
  volume = {13},
  number = {2},
  pages = {65-70},
  doi = {10.11648/j.ijssn.20251302.15},
  url = {https://doi.org/10.11648/j.ijssn.20251302.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijssn.20251302.15},
  abstract = {This paper proposes a phased array photodetector chip scheme based on phase difference filtering for grating encoders, aiming to address the bottleneck of traditional grating encoders in balancing precision and miniaturization. The core innovation of the proposed method lies in its optimized signal processing and structural design. The method further subdivides each field in the four-field column method into multiple row combinations with different phases, and weakens high-order harmonic components through the phase arrangement relationship between row combinations, thereby improving the quality of Moiré fringe signals. It meets the demand for a compact array layout while ensuring good photoelectric conversion efficiency. To ensure the scheme’s feasibility and integration, the research adopts a cross-disciplinary integrated approach that combines optics, mechanics, and electronics. It integrates technologies such as phase difference filtering and optoelectronic integration into the development of photodetectors, and designs a dedicated integrated optoelectronic chip based on the developed detector. The research verifies the scheme through a rigorous three-step process: theoretical modeling, structural innovation (to design the folded-line array layout for compactness), and process verification (to ensure compatibility with standard semiconductor manufacturing processes). Simulation results confirm that the developed folded-line array photodetector exhibits excellent orthogonality in photoelectric signal conversion, a key indicator of measurement accuracy. Meanwhile, the chip’s compact array layout reduces its overall volume by approximately 30% compared to traditional discrete detector modules, while maintaining a high photoelectric conversion efficiency of over 85%.
},
 year = {2025}
}

Copy | Download

TY  - JOUR
T1  - Development of a Specialized Phased Array Photodetector Chip for Grating Encoders Using Phase Difference Filtering

AU  - Ziyu Wang
AU  - Zilong Zhao
AU  - Yusong Mu
Y1  - 2025/11/26
PY  - 2025
N1  - https://doi.org/10.11648/j.ijssn.20251302.15
DO  - 10.11648/j.ijssn.20251302.15
T2  - International Journal of Sensors and Sensor Networks
JF  - International Journal of Sensors and Sensor Networks
JO  - International Journal of Sensors and Sensor Networks
SP  - 65
EP  - 70
PB  - Science Publishing Group
SN  - 2329-1788
UR  - https://doi.org/10.11648/j.ijssn.20251302.15
AB  - This paper proposes a phased array photodetector chip scheme based on phase difference filtering for grating encoders, aiming to address the bottleneck of traditional grating encoders in balancing precision and miniaturization. The core innovation of the proposed method lies in its optimized signal processing and structural design. The method further subdivides each field in the four-field column method into multiple row combinations with different phases, and weakens high-order harmonic components through the phase arrangement relationship between row combinations, thereby improving the quality of Moiré fringe signals. It meets the demand for a compact array layout while ensuring good photoelectric conversion efficiency. To ensure the scheme’s feasibility and integration, the research adopts a cross-disciplinary integrated approach that combines optics, mechanics, and electronics. It integrates technologies such as phase difference filtering and optoelectronic integration into the development of photodetectors, and designs a dedicated integrated optoelectronic chip based on the developed detector. The research verifies the scheme through a rigorous three-step process: theoretical modeling, structural innovation (to design the folded-line array layout for compactness), and process verification (to ensure compatibility with standard semiconductor manufacturing processes). Simulation results confirm that the developed folded-line array photodetector exhibits excellent orthogonality in photoelectric signal conversion, a key indicator of measurement accuracy. Meanwhile, the chip’s compact array layout reduces its overall volume by approximately 30% compared to traditional discrete detector modules, while maintaining a high photoelectric conversion efficiency of over 85%.

VL  - 13
IS  - 2
ER  -

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