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Miniaturized High-Speed FBG Interrogator Based on a Photonic AWG Chip.

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Title: Miniaturized High-Speed FBG Interrogator Based on a Photonic AWG Chip.
Authors: Jiao, Yunjing1,2 (AUTHOR), Yao, Kun1,2,3 (AUTHOR), Lin, Qijing1,3,4,5,6 (AUTHOR), Du, Jiaqi1,2,4 (AUTHOR), Zhao, Yueqi1,3,5 (AUTHOR), Ye, Kaichen1,3,6 (AUTHOR), Sun, Bin7 (AUTHOR), Jiang, Zhuangde1,2 (AUTHOR)
Source: Nanomaterials (2079-4991). Jan2026, Vol. 16 Issue 2, p89. 15p.
Subjects: Fiber Bragg gratings, Wavelength measurement, Integrated optics, Speed measurements, Quality assurance standards, Signal processing, Applied sciences
Abstract: Although AWGs are widely used in FBG interrogation systems, conventional interrogators are often bulky and hard to deploy, limiting their use in complex field environments. Here, we developed an FBG interrogator based on a photonic AWG chip, comprising a photonic chip module, an optoelectronic detection and processing module, and an output interface module. The AWG chip measures only 280 µm × 150 µm, while the entire interrogator measures just 160 mm × 100 mm × 80 mm, achieving system miniaturization. Wavelength interrogation tests show that the FBG interrogator achieves a wavelength accuracy of 9.87 pm and a high-speed sampling rate of up to 10 kHz, enabling high-precision, real-time FBG demodulation under rapidly varying temperatures. Furthermore, the interrogator was subjected to engineering validation, with dynamic FBG wavelength demodulation experiments conducted under high-temperature shocks in a turbo-engine, verifying its reliability under extreme conditions and demonstrating its potential for broader engineering applications. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Miniaturized High-Speed FBG Interrogator Based on a Photonic AWG Chip.
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Jan2026, Vol. 16 Issue 2, p89. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Fiber+Bragg+gratings%22">Fiber Bragg gratings</searchLink><br /><searchLink fieldCode="DE" term="%22Wavelength+measurement%22">Wavelength measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Integrated+optics%22">Integrated optics</searchLink><br /><searchLink fieldCode="DE" term="%22Speed+measurements%22">Speed measurements</searchLink><br /><searchLink fieldCode="DE" term="%22Quality+assurance+standards%22">Quality assurance standards</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+processing%22">Signal processing</searchLink><br /><searchLink fieldCode="DE" term="%22Applied+sciences%22">Applied sciences</searchLink>
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  Data: Although AWGs are widely used in FBG interrogation systems, conventional interrogators are often bulky and hard to deploy, limiting their use in complex field environments. Here, we developed an FBG interrogator based on a photonic AWG chip, comprising a photonic chip module, an optoelectronic detection and processing module, and an output interface module. The AWG chip measures only 280 µm × 150 µm, while the entire interrogator measures just 160 mm × 100 mm × 80 mm, achieving system miniaturization. Wavelength interrogation tests show that the FBG interrogator achieves a wavelength accuracy of 9.87 pm and a high-speed sampling rate of up to 10 kHz, enabling high-precision, real-time FBG demodulation under rapidly varying temperatures. Furthermore, the interrogator was subjected to engineering validation, with dynamic FBG wavelength demodulation experiments conducted under high-temperature shocks in a turbo-engine, verifying its reliability under extreme conditions and demonstrating its potential for broader engineering applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/nano16020089
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      – SubjectFull: Fiber Bragg gratings
        Type: general
      – SubjectFull: Wavelength measurement
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      – SubjectFull: Integrated optics
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      – SubjectFull: Speed measurements
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      – SubjectFull: Quality assurance standards
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      – SubjectFull: Signal processing
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      – SubjectFull: Applied sciences
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      – TitleFull: Miniaturized High-Speed FBG Interrogator Based on a Photonic AWG Chip.
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              Text: Jan2026
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