Novel RF Interrogation of a Fiber Bragg Grating Sensor Using Bidirectional Modulation of a Mach-Zehnder Electro-Optical Modulator
We propose and experimentally demonstrate the novel radio-frequency (RF) interrogation of a fiber Bragg grating (FBG) sensor using bidirectional modulation of a Mach-Zehnder electro-optical modulator (MZ-EOM). Based on the microwave photonic technique and active detection, the transfer function of t...
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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/1424-8220/13/7/8403 |
| _version_ | 1818013465397166080 |
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| author | Jae-Kyung Pan Wankai Mao Sang-Jin Choi |
| author_facet | Jae-Kyung Pan Wankai Mao Sang-Jin Choi |
| author_sort | Jae-Kyung Pan |
| collection | DOAJ |
| description | We propose and experimentally demonstrate the novel radio-frequency (RF) interrogation of a fiber Bragg grating (FBG) sensor using bidirectional modulation of a Mach-Zehnder electro-optical modulator (MZ-EOM). Based on the microwave photonic technique and active detection, the transfer function of the proposed system was obtained, and the time delay was calculated from the change in the free spectral range (FSR) at different wavelengths over the optimal measuring range. The results show that the time delay and the wavelength variation have a good linear relationship, with a gradient of 9.31 ps/nm. An actual measurement taken with a sensing FBG for temperature variation shows the relationship with a gradient of 0.93 ps/10 °C. The developed system could be used for FBG temperature or strain sensing and other multiplexed sensor applications. |
| first_indexed | 2024-04-14T06:33:28Z |
| format | Article |
| id | doaj.art-4f716dddc6f7486c91435e2571f08ac1 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-14T06:33:28Z |
| publishDate | 2013-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-4f716dddc6f7486c91435e2571f08ac12022-12-22T02:07:32ZengMDPI AGSensors1424-82202013-07-011378403841110.3390/s130708403Novel RF Interrogation of a Fiber Bragg Grating Sensor Using Bidirectional Modulation of a Mach-Zehnder Electro-Optical ModulatorJae-Kyung PanWankai MaoSang-Jin ChoiWe propose and experimentally demonstrate the novel radio-frequency (RF) interrogation of a fiber Bragg grating (FBG) sensor using bidirectional modulation of a Mach-Zehnder electro-optical modulator (MZ-EOM). Based on the microwave photonic technique and active detection, the transfer function of the proposed system was obtained, and the time delay was calculated from the change in the free spectral range (FSR) at different wavelengths over the optimal measuring range. The results show that the time delay and the wavelength variation have a good linear relationship, with a gradient of 9.31 ps/nm. An actual measurement taken with a sensing FBG for temperature variation shows the relationship with a gradient of 0.93 ps/10 °C. The developed system could be used for FBG temperature or strain sensing and other multiplexed sensor applications.http://www.mdpi.com/1424-8220/13/7/8403radio-frequency (RF) interrogationfiber Bragg grating (FBG)chirped fiber Bragg grating (CFBG)Mach-Zehnder electro-optical modulator (MZ-EOM) |
| spellingShingle | Jae-Kyung Pan Wankai Mao Sang-Jin Choi Novel RF Interrogation of a Fiber Bragg Grating Sensor Using Bidirectional Modulation of a Mach-Zehnder Electro-Optical Modulator Sensors radio-frequency (RF) interrogation fiber Bragg grating (FBG) chirped fiber Bragg grating (CFBG) Mach-Zehnder electro-optical modulator (MZ-EOM) |
| title | Novel RF Interrogation of a Fiber Bragg Grating Sensor Using Bidirectional Modulation of a Mach-Zehnder Electro-Optical Modulator |
| title_full | Novel RF Interrogation of a Fiber Bragg Grating Sensor Using Bidirectional Modulation of a Mach-Zehnder Electro-Optical Modulator |
| title_fullStr | Novel RF Interrogation of a Fiber Bragg Grating Sensor Using Bidirectional Modulation of a Mach-Zehnder Electro-Optical Modulator |
| title_full_unstemmed | Novel RF Interrogation of a Fiber Bragg Grating Sensor Using Bidirectional Modulation of a Mach-Zehnder Electro-Optical Modulator |
| title_short | Novel RF Interrogation of a Fiber Bragg Grating Sensor Using Bidirectional Modulation of a Mach-Zehnder Electro-Optical Modulator |
| title_sort | novel rf interrogation of a fiber bragg grating sensor using bidirectional modulation of a mach zehnder electro optical modulator |
| topic | radio-frequency (RF) interrogation fiber Bragg grating (FBG) chirped fiber Bragg grating (CFBG) Mach-Zehnder electro-optical modulator (MZ-EOM) |
| url | http://www.mdpi.com/1424-8220/13/7/8403 |
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