Dynamic Sensor Interrogation Using Wavelength-Swept Laser with a Polygon-Scanner-Based Wavelength Filter
We report a high-speed (~2 kHz) dynamic multiplexed fiber Bragg grating (FBG) sensor interrogation using a wavelength-swept laser (WSL) with a polygon-scanner-based wavelength filter. The scanning frequency of the WSL is 18 kHz, and the 10 dB scanning bandwidth is more than 90 nm around a center wav...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2013-07-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/13/8/9669 |
| _version_ | 1818036217309036544 |
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| author | Kyung Hyun Park Han-Cheol Ryu Sang-Pil Han Namje Kim Ik Gon Park Mi Sun Jung Myeong Ock Ko Yong Seok Kwon Min Yong Jeon |
| author_facet | Kyung Hyun Park Han-Cheol Ryu Sang-Pil Han Namje Kim Ik Gon Park Mi Sun Jung Myeong Ock Ko Yong Seok Kwon Min Yong Jeon |
| author_sort | Kyung Hyun Park |
| collection | DOAJ |
| description | We report a high-speed (~2 kHz) dynamic multiplexed fiber Bragg grating (FBG) sensor interrogation using a wavelength-swept laser (WSL) with a polygon-scanner-based wavelength filter. The scanning frequency of the WSL is 18 kHz, and the 10 dB scanning bandwidth is more than 90 nm around a center wavelength of 1,540 nm. The output from the WSL is coupled into the multiplexed FBG array, which consists of five FBGs. The reflected Bragg wavelengths of the FBGs are 1,532.02 nm, 1,537.84 nm, 1,543.48 nm, 1,547.98 nm, and 1,553.06 nm, respectively. A dynamic periodic strain ranging from 500 Hz to 2 kHz is applied to one of the multiplexed FBGs, which is fixed on the stage of the piezoelectric transducer stack. Good dynamic performance of the FBGs and recording of their fast Fourier transform spectra have been successfully achieved with a measuring speed of 18 kHz. The signal-to-noise ratio and the bandwidth over the whole frequency span are determined to be more than 30 dB and around 10 Hz, respectively. We successfully obtained a real-time measurement of the abrupt change of the periodic strain. The dynamic FBG sensor interrogation system can be read out with a WSL for high-speed and high-sensitivity real-time measurement. |
| first_indexed | 2024-12-10T07:07:26Z |
| format | Article |
| id | doaj.art-6cc441466d304f319af1d8b76eb2895b |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-12-10T07:07:26Z |
| publishDate | 2013-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6cc441466d304f319af1d8b76eb2895b2022-12-22T01:58:09ZengMDPI AGSensors1424-82202013-07-011389669967810.3390/s130809669Dynamic Sensor Interrogation Using Wavelength-Swept Laser with a Polygon-Scanner-Based Wavelength FilterKyung Hyun ParkHan-Cheol RyuSang-Pil HanNamje KimIk Gon ParkMi Sun JungMyeong Ock KoYong Seok KwonMin Yong JeonWe report a high-speed (~2 kHz) dynamic multiplexed fiber Bragg grating (FBG) sensor interrogation using a wavelength-swept laser (WSL) with a polygon-scanner-based wavelength filter. The scanning frequency of the WSL is 18 kHz, and the 10 dB scanning bandwidth is more than 90 nm around a center wavelength of 1,540 nm. The output from the WSL is coupled into the multiplexed FBG array, which consists of five FBGs. The reflected Bragg wavelengths of the FBGs are 1,532.02 nm, 1,537.84 nm, 1,543.48 nm, 1,547.98 nm, and 1,553.06 nm, respectively. A dynamic periodic strain ranging from 500 Hz to 2 kHz is applied to one of the multiplexed FBGs, which is fixed on the stage of the piezoelectric transducer stack. Good dynamic performance of the FBGs and recording of their fast Fourier transform spectra have been successfully achieved with a measuring speed of 18 kHz. The signal-to-noise ratio and the bandwidth over the whole frequency span are determined to be more than 30 dB and around 10 Hz, respectively. We successfully obtained a real-time measurement of the abrupt change of the periodic strain. The dynamic FBG sensor interrogation system can be read out with a WSL for high-speed and high-sensitivity real-time measurement.http://www.mdpi.com/1424-8220/13/8/9669wavelength-swept laserfiber Bragg gratingsensor interrogationstrain measurementsemiconductor optical amplifier |
| spellingShingle | Kyung Hyun Park Han-Cheol Ryu Sang-Pil Han Namje Kim Ik Gon Park Mi Sun Jung Myeong Ock Ko Yong Seok Kwon Min Yong Jeon Dynamic Sensor Interrogation Using Wavelength-Swept Laser with a Polygon-Scanner-Based Wavelength Filter Sensors wavelength-swept laser fiber Bragg grating sensor interrogation strain measurement semiconductor optical amplifier |
| title | Dynamic Sensor Interrogation Using Wavelength-Swept Laser with a Polygon-Scanner-Based Wavelength Filter |
| title_full | Dynamic Sensor Interrogation Using Wavelength-Swept Laser with a Polygon-Scanner-Based Wavelength Filter |
| title_fullStr | Dynamic Sensor Interrogation Using Wavelength-Swept Laser with a Polygon-Scanner-Based Wavelength Filter |
| title_full_unstemmed | Dynamic Sensor Interrogation Using Wavelength-Swept Laser with a Polygon-Scanner-Based Wavelength Filter |
| title_short | Dynamic Sensor Interrogation Using Wavelength-Swept Laser with a Polygon-Scanner-Based Wavelength Filter |
| title_sort | dynamic sensor interrogation using wavelength swept laser with a polygon scanner based wavelength filter |
| topic | wavelength-swept laser fiber Bragg grating sensor interrogation strain measurement semiconductor optical amplifier |
| url | http://www.mdpi.com/1424-8220/13/8/9669 |
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