Ultrahigh-Resolution Fiber-Optic Sensing Based on High-Finesse, Meter-Long Fiber Fabry-Perot Resonators
Ultrahigh-resolution fiber-optic sensing has found a wide range of potential applications. However, the techniques reported so far are all based on highly specialized fiber structures and interrogation lasers, which are not widely available. In this paper, we report the demonstration of ultrahigh st...
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IEEE
2020-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9004549/ |
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| author | Nabil Md. Rakinul Hoque Lingze Duan |
| author_facet | Nabil Md. Rakinul Hoque Lingze Duan |
| author_sort | Nabil Md. Rakinul Hoque |
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| description | Ultrahigh-resolution fiber-optic sensing has found a wide range of potential applications. However, the techniques reported so far are all based on highly specialized fiber structures and interrogation lasers, which are not widely available. In this paper, we report the demonstration of ultrahigh strain resolutions using only off-the-shelf commercial components. Our method leverages the high wavelength discrimination of long, high-finesse fiber Fabry-Perot interferometers (FFPI), using two 1 m-long FFPIs, one as the sensor and the other as a frequency reference. By locking the interrogation laser to the reference interferometer, which is co-packaged with the sensor interferometer, large, environment-induced sensing background is removed. This allows the laser to reliably probe the strains applied on the sensor with very high resolutions. A nominal, noise-limited strain resolution of 800 <italic>fϵ</italic>/√Hz has been achieved within 1–100 Hz. Strain resolution further improves to 75 <italic>fϵ</italic>/√Hz at 1 kHz, 60 <italic>fϵ</italic>/√Hz at 2 kHz and 40 <italic>fϵ</italic>/√Hz at 23 kHz, demonstrating better resolutions than proven techniques such as <italic>π</italic>-phase-shifted and slow-light fiber Bragg gratings. The work lays out a cost-effective scheme to achieve ultrahigh-resolution fiber-optic sensing. |
| format | Article |
| id | doaj-art-7a5a830097374edaa6d7efbf8b268e95 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-7a5a830097374edaa6d7efbf8b268e952025-08-20T03:32:46ZengIEEEIEEE Photonics Journal1943-06552020-01-011231910.1109/JPHOT.2020.29746289004549Ultrahigh-Resolution Fiber-Optic Sensing Based on High-Finesse, Meter-Long Fiber Fabry-Perot ResonatorsNabil Md. Rakinul Hoque0https://orcid.org/0000-0003-2184-8978Lingze Duan1https://orcid.org/0000-0001-6321-7846Department of Physics and Astronomy, The University of Alabama in Huntsville, Huntsville, AL, USADepartment of Physics and Astronomy, The University of Alabama in Huntsville, Huntsville, AL, USAUltrahigh-resolution fiber-optic sensing has found a wide range of potential applications. However, the techniques reported so far are all based on highly specialized fiber structures and interrogation lasers, which are not widely available. In this paper, we report the demonstration of ultrahigh strain resolutions using only off-the-shelf commercial components. Our method leverages the high wavelength discrimination of long, high-finesse fiber Fabry-Perot interferometers (FFPI), using two 1 m-long FFPIs, one as the sensor and the other as a frequency reference. By locking the interrogation laser to the reference interferometer, which is co-packaged with the sensor interferometer, large, environment-induced sensing background is removed. This allows the laser to reliably probe the strains applied on the sensor with very high resolutions. A nominal, noise-limited strain resolution of 800 <italic>fϵ</italic>/√Hz has been achieved within 1–100 Hz. Strain resolution further improves to 75 <italic>fϵ</italic>/√Hz at 1 kHz, 60 <italic>fϵ</italic>/√Hz at 2 kHz and 40 <italic>fϵ</italic>/√Hz at 23 kHz, demonstrating better resolutions than proven techniques such as <italic>π</italic>-phase-shifted and slow-light fiber Bragg gratings. The work lays out a cost-effective scheme to achieve ultrahigh-resolution fiber-optic sensing.https://ieeexplore.ieee.org/document/9004549/Fabry-Perot interferometersoptical fiber sensorsoptical resonatorsstrain measurement. |
| spellingShingle | Nabil Md. Rakinul Hoque Lingze Duan Ultrahigh-Resolution Fiber-Optic Sensing Based on High-Finesse, Meter-Long Fiber Fabry-Perot Resonators IEEE Photonics Journal Fabry-Perot interferometers optical fiber sensors optical resonators strain measurement. |
| title | Ultrahigh-Resolution Fiber-Optic Sensing Based on High-Finesse, Meter-Long Fiber Fabry-Perot Resonators |
| title_full | Ultrahigh-Resolution Fiber-Optic Sensing Based on High-Finesse, Meter-Long Fiber Fabry-Perot Resonators |
| title_fullStr | Ultrahigh-Resolution Fiber-Optic Sensing Based on High-Finesse, Meter-Long Fiber Fabry-Perot Resonators |
| title_full_unstemmed | Ultrahigh-Resolution Fiber-Optic Sensing Based on High-Finesse, Meter-Long Fiber Fabry-Perot Resonators |
| title_short | Ultrahigh-Resolution Fiber-Optic Sensing Based on High-Finesse, Meter-Long Fiber Fabry-Perot Resonators |
| title_sort | ultrahigh resolution fiber optic sensing based on high finesse meter long fiber fabry perot resonators |
| topic | Fabry-Perot interferometers optical fiber sensors optical resonators strain measurement. |
| url | https://ieeexplore.ieee.org/document/9004549/ |
| work_keys_str_mv | AT nabilmdrakinulhoque ultrahighresolutionfiberopticsensingbasedonhighfinessemeterlongfiberfabryperotresonators AT lingzeduan ultrahighresolutionfiberopticsensingbasedonhighfinessemeterlongfiberfabryperotresonators |