Phase Response Identification of Photodetectors in High-Speed Interferometry Using Photoelectric Pseudorandom Signals
Dynamic accuracy and synchronization of high-speed interferometry are crucial for advanced manufacturing, semiconductor fabrication, and dynamic metrology, where asynchronous errors introduced by the nonlinear phase responses of photodetectors can severely degrade the measurement performance. The co...
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IEEE
2025-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/11034693/ |
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| author | Yunke Sun Yifei Xie Xiaotong Yan Xu Xing Pengcheng Hu |
| author_facet | Yunke Sun Yifei Xie Xiaotong Yan Xu Xing Pengcheng Hu |
| author_sort | Yunke Sun |
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| description | Dynamic accuracy and synchronization of high-speed interferometry are crucial for advanced manufacturing, semiconductor fabrication, and dynamic metrology, where asynchronous errors introduced by the nonlinear phase responses of photodetectors can severely degrade the measurement performance. The complex cross-physical processes make the phase responses of photodetectors challenging. Owing to their bandwidth, resolution, and test deviation limitations, the existing methods are not applicable to interferometric photodetectors. In this study, we employ a commonly available small form-factor pluggable module to generate optical pseudorandom signals as a photodetector’s excitation signals. Through correlation operations and phase spectrum analysis, the phase response of a photodetector with a 10-MHz bandwidth is identified with a model reliability of 90% and an uncertainty of 0.50° (k = 2). In practical applications, the identified phase response can help an interferometer suppress asynchronous errors to the sub-nm level within a maximum speed of 1.58 m/s. Comparative experiments verify the accuracy of the identified results and highlight substantial improvements in test precision, frequency resolution, practicality, and universality over existing methods. |
| format | Article |
| id | doaj-art-e50509d643344d0c9d9f9bfedd27029a |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
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| series | IEEE Photonics Journal |
| spelling | doaj-art-e50509d643344d0c9d9f9bfedd27029a2025-08-20T03:29:23ZengIEEEIEEE Photonics Journal1943-06552025-01-0117411010.1109/JPHOT.2025.357950611034693Phase Response Identification of Photodetectors in High-Speed Interferometry Using Photoelectric Pseudorandom SignalsYunke Sun0https://orcid.org/0000-0003-4845-1831Yifei Xie1https://orcid.org/0009-0001-1384-5518Xiaotong Yan2https://orcid.org/0009-0003-3872-9681Xu Xing3https://orcid.org/0000-0002-3312-4574Pengcheng Hu4https://orcid.org/0000-0002-2471-7036Ultra-Precision Optoelectronic Instrument Engineering Center, School of Instrument Science and Engineering, and the Key Laboratory of Ultra-Precision Intelligent Instrumentation, Ministry of Industry Information Technology, Harbin Institute of Technology, Harbin, ChinaUltra-Precision Optoelectronic Instrument Engineering Center, School of Instrument Science and Engineering, and the Key Laboratory of Ultra-Precision Intelligent Instrumentation, Ministry of Industry Information Technology, Harbin Institute of Technology, Harbin, ChinaUltra-Precision Optoelectronic Instrument Engineering Center, School of Instrument Science and Engineering, and the Key Laboratory of Ultra-Precision Intelligent Instrumentation, Ministry of Industry Information Technology, Harbin Institute of Technology, Harbin, ChinaUltra-Precision Optoelectronic Instrument Engineering Center, School of Instrument Science and Engineering, and The Key Laboratory of Ultra-Precision Intelligent Instrumentation, Ministry of Industry Information Technology, Harbin Institute of Technology, Harbin, ChinaUltra-Precision Optoelectronic Instrument Engineering Center, School of Instrument Science and Engineering, and The Key Laboratory of Ultra-Precision Intelligent Instrumentation, Ministry of Industry Information Technology, Harbin Institute of Technology, Harbin, ChinaDynamic accuracy and synchronization of high-speed interferometry are crucial for advanced manufacturing, semiconductor fabrication, and dynamic metrology, where asynchronous errors introduced by the nonlinear phase responses of photodetectors can severely degrade the measurement performance. The complex cross-physical processes make the phase responses of photodetectors challenging. Owing to their bandwidth, resolution, and test deviation limitations, the existing methods are not applicable to interferometric photodetectors. In this study, we employ a commonly available small form-factor pluggable module to generate optical pseudorandom signals as a photodetector’s excitation signals. Through correlation operations and phase spectrum analysis, the phase response of a photodetector with a 10-MHz bandwidth is identified with a model reliability of 90% and an uncertainty of 0.50° (k = 2). In practical applications, the identified phase response can help an interferometer suppress asynchronous errors to the sub-nm level within a maximum speed of 1.58 m/s. Comparative experiments verify the accuracy of the identified results and highlight substantial improvements in test precision, frequency resolution, practicality, and universality over existing methods.https://ieeexplore.ieee.org/document/11034693/Correlation operationslaser interferometryphase responsephotodetectorspseudorandom signalssystem identification |
| spellingShingle | Yunke Sun Yifei Xie Xiaotong Yan Xu Xing Pengcheng Hu Phase Response Identification of Photodetectors in High-Speed Interferometry Using Photoelectric Pseudorandom Signals IEEE Photonics Journal Correlation operations laser interferometry phase response photodetectors pseudorandom signals system identification |
| title | Phase Response Identification of Photodetectors in High-Speed Interferometry Using Photoelectric Pseudorandom Signals |
| title_full | Phase Response Identification of Photodetectors in High-Speed Interferometry Using Photoelectric Pseudorandom Signals |
| title_fullStr | Phase Response Identification of Photodetectors in High-Speed Interferometry Using Photoelectric Pseudorandom Signals |
| title_full_unstemmed | Phase Response Identification of Photodetectors in High-Speed Interferometry Using Photoelectric Pseudorandom Signals |
| title_short | Phase Response Identification of Photodetectors in High-Speed Interferometry Using Photoelectric Pseudorandom Signals |
| title_sort | phase response identification of photodetectors in high speed interferometry using photoelectric pseudorandom signals |
| topic | Correlation operations laser interferometry phase response photodetectors pseudorandom signals system identification |
| url | https://ieeexplore.ieee.org/document/11034693/ |
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