A compact and Ultra-sensitive microfiber based interferometer sensor for precise electrical current detection
Precision measurement of microcurrents enhances microscopic understanding and provides accurate data for fields like research, healthcare, semiconductors, and sensors. A novel fiber-optic electrical current sensor, featuring a synchronized fusion and tapering process for integrating single-mode opti...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Results in Optics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666950125000161 |
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| author | Guoyu Li Fei Xie Yan Li Hongtao Li Rui Liu Ao Wang Lili Liang |
| author_facet | Guoyu Li Fei Xie Yan Li Hongtao Li Rui Liu Ao Wang Lili Liang |
| author_sort | Guoyu Li |
| collection | DOAJ |
| description | Precision measurement of microcurrents enhances microscopic understanding and provides accurate data for fields like research, healthcare, semiconductors, and sensors. A novel fiber-optic electrical current sensor, featuring a synchronized fusion and tapering process for integrating single-mode optical fibers with silicon microtube filled with carbon fibers, has been presented in this work. The composite waveguide structure composed of optical microfiber and silicon micro-tube forms a mode interferometer, which is with high temperature sensitivity of 8.06 nm/℃. As electrical current flows through the conductive material of carbon fiber, it generates a thermal effect, causing a temperature change around the waveguide structure and leading to a wavelength shift in the interferometer’s transmission spectrum. The magnitude of this wavelength shift directly indicates the current intensity, providing a highly sensitive approach to current sensing. Notably, our interferometer, with its compactness, remarkable sensitivity of 3625 nm/mA2, and broad measurement range spanning from 0 mA to 200 mA with a micro-current resolution of 0.002 mA, is positioned as a promising candidate for precise and reliable electrical current measurements in micro current flow detection. |
| format | Article |
| id | doaj-art-10e9c3db576c41a38eb48fb4a58f02f3 |
| institution | Kabale University |
| issn | 2666-9501 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Optics |
| spelling | doaj-art-10e9c3db576c41a38eb48fb4a58f02f32025-01-31T05:12:35ZengElsevierResults in Optics2666-95012025-02-0118100788A compact and Ultra-sensitive microfiber based interferometer sensor for precise electrical current detectionGuoyu Li0Fei Xie1Yan Li2Hongtao Li3Rui Liu4Ao Wang5Lili Liang6Hebei Key Laboratory of Optical Fiber Biosensing and Communication Devices, Institute of Information Technology, Handan University, Handan 056005, PR ChinaHebei Key Laboratory of Optical Fiber Biosensing and Communication Devices, Institute of Information Technology, Handan University, Handan 056005, PR ChinaHebei Key Laboratory of Optical Fiber Biosensing and Communication Devices, Institute of Information Technology, Handan University, Handan 056005, PR ChinaSchool of Physics and Optoelectronic Engineering, Information Materials and Intelligent Sensing Laboratory of Anhui Province, and Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, Hefei 230601, PR ChinaHebei Key Laboratory of Optical Fiber Biosensing and Communication Devices, Institute of Information Technology, Handan University, Handan 056005, PR ChinaHebei Key Laboratory of Optical Fiber Biosensing and Communication Devices, Institute of Information Technology, Handan University, Handan 056005, PR China; Army Academy of Armored Forces, Bengbu 233000, PR ChinaHebei Key Laboratory of Optical Fiber Biosensing and Communication Devices, Institute of Information Technology, Handan University, Handan 056005, PR China; Corresponding author.Precision measurement of microcurrents enhances microscopic understanding and provides accurate data for fields like research, healthcare, semiconductors, and sensors. A novel fiber-optic electrical current sensor, featuring a synchronized fusion and tapering process for integrating single-mode optical fibers with silicon microtube filled with carbon fibers, has been presented in this work. The composite waveguide structure composed of optical microfiber and silicon micro-tube forms a mode interferometer, which is with high temperature sensitivity of 8.06 nm/℃. As electrical current flows through the conductive material of carbon fiber, it generates a thermal effect, causing a temperature change around the waveguide structure and leading to a wavelength shift in the interferometer’s transmission spectrum. The magnitude of this wavelength shift directly indicates the current intensity, providing a highly sensitive approach to current sensing. Notably, our interferometer, with its compactness, remarkable sensitivity of 3625 nm/mA2, and broad measurement range spanning from 0 mA to 200 mA with a micro-current resolution of 0.002 mA, is positioned as a promising candidate for precise and reliable electrical current measurements in micro current flow detection.http://www.sciencedirect.com/science/article/pii/S2666950125000161Optical microfiber sensorSillicon microtubesCarbon fiberThermo-optic effectCurrent sensing |
| spellingShingle | Guoyu Li Fei Xie Yan Li Hongtao Li Rui Liu Ao Wang Lili Liang A compact and Ultra-sensitive microfiber based interferometer sensor for precise electrical current detection Results in Optics Optical microfiber sensor Sillicon microtubes Carbon fiber Thermo-optic effect Current sensing |
| title | A compact and Ultra-sensitive microfiber based interferometer sensor for precise electrical current detection |
| title_full | A compact and Ultra-sensitive microfiber based interferometer sensor for precise electrical current detection |
| title_fullStr | A compact and Ultra-sensitive microfiber based interferometer sensor for precise electrical current detection |
| title_full_unstemmed | A compact and Ultra-sensitive microfiber based interferometer sensor for precise electrical current detection |
| title_short | A compact and Ultra-sensitive microfiber based interferometer sensor for precise electrical current detection |
| title_sort | compact and ultra sensitive microfiber based interferometer sensor for precise electrical current detection |
| topic | Optical microfiber sensor Sillicon microtubes Carbon fiber Thermo-optic effect Current sensing |
| url | http://www.sciencedirect.com/science/article/pii/S2666950125000161 |
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