Oxygen Gas Sensing with Photothermal Spectroscopy in a Hollow-Core Negative Curvature Fiber
We demonstrate a compact all-fiber oxygen sensor using photothermal interferometry with a short length (4.3 cm) of hollow-core negative curvature fibers. The hollow-core fiber has double transmission windows covering both visible and near-infrared wavelength regions. Absorption of a pump laser beam...
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MDPI AG
2020-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/21/6084 |
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doaj-8e279ca933f1430694572eaa046061ff2020-11-25T03:52:06ZengMDPI AGSensors1424-82202020-10-01206084608410.3390/s20216084Oxygen Gas Sensing with Photothermal Spectroscopy in a Hollow-Core Negative Curvature FiberYingzhen Hong0Haihong Bao1Wei Jin2Shoulin Jiang3Hoi Lut Ho4Shoufei Gao5Yingying Wang6Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, ChinaDepartment of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, ChinaDepartment of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, ChinaPhotonics Research Center, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, ChinaDepartment of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, ChinaDepartment of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, ChinaInstitute of Photonics Technology, Jinan University, Guangzhou 510632, ChinaWe demonstrate a compact all-fiber oxygen sensor using photothermal interferometry with a short length (4.3 cm) of hollow-core negative curvature fibers. The hollow-core fiber has double transmission windows covering both visible and near-infrared wavelength regions. Absorption of a pump laser beam at 760 nm produces photothermal phase modulation and a probe Fabry-Perot interferometer operating at 1550 nm is used to detect the phase modulation. With wavelength modulation and first harmonic detection, a limit of detection down to 54 parts per million (ppm) with a 600-s averaging time is achieved, corresponding to a normalized equivalent absorption of 7.7 × 10<sup>−8</sup> cm<sup>−1</sup>. The oxygen sensor has great potential for in situ detection applications.https://www.mdpi.com/1424-8220/20/21/6084optical fiber sensoroxygen detectionphotothermal interferometryhollow-core fiber |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Yingzhen Hong Haihong Bao Wei Jin Shoulin Jiang Hoi Lut Ho Shoufei Gao Yingying Wang |
| spellingShingle |
Yingzhen Hong Haihong Bao Wei Jin Shoulin Jiang Hoi Lut Ho Shoufei Gao Yingying Wang Oxygen Gas Sensing with Photothermal Spectroscopy in a Hollow-Core Negative Curvature Fiber Sensors optical fiber sensor oxygen detection photothermal interferometry hollow-core fiber |
| author_facet |
Yingzhen Hong Haihong Bao Wei Jin Shoulin Jiang Hoi Lut Ho Shoufei Gao Yingying Wang |
| author_sort |
Yingzhen Hong |
| title |
Oxygen Gas Sensing with Photothermal Spectroscopy in a Hollow-Core Negative Curvature Fiber |
| title_short |
Oxygen Gas Sensing with Photothermal Spectroscopy in a Hollow-Core Negative Curvature Fiber |
| title_full |
Oxygen Gas Sensing with Photothermal Spectroscopy in a Hollow-Core Negative Curvature Fiber |
| title_fullStr |
Oxygen Gas Sensing with Photothermal Spectroscopy in a Hollow-Core Negative Curvature Fiber |
| title_full_unstemmed |
Oxygen Gas Sensing with Photothermal Spectroscopy in a Hollow-Core Negative Curvature Fiber |
| title_sort |
oxygen gas sensing with photothermal spectroscopy in a hollow-core negative curvature fiber |
| publisher |
MDPI AG |
| series |
Sensors |
| issn |
1424-8220 |
| publishDate |
2020-10-01 |
| description |
We demonstrate a compact all-fiber oxygen sensor using photothermal interferometry with a short length (4.3 cm) of hollow-core negative curvature fibers. The hollow-core fiber has double transmission windows covering both visible and near-infrared wavelength regions. Absorption of a pump laser beam at 760 nm produces photothermal phase modulation and a probe Fabry-Perot interferometer operating at 1550 nm is used to detect the phase modulation. With wavelength modulation and first harmonic detection, a limit of detection down to 54 parts per million (ppm) with a 600-s averaging time is achieved, corresponding to a normalized equivalent absorption of 7.7 × 10<sup>−8</sup> cm<sup>−1</sup>. The oxygen sensor has great potential for in situ detection applications. |
| topic |
optical fiber sensor oxygen detection photothermal interferometry hollow-core fiber |
| url |
https://www.mdpi.com/1424-8220/20/21/6084 |
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