Pulse reference-based compensation technique for intensity-modulated optical fiber sensors
We propose a compensation technique based on pulse reference for intensity-modulated optical fiber sensors that can compensate the power fluctuation of the light source, the change of optical components transmission loss, and the coupler splitting ratio. The theoretical principle of this compensatio...
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| Published in: | Chinese optics letters Vol. 15; no. 12; pp. 20 - 23 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
10-12-2017
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| Online Access: | Get full text |
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| Summary: | We propose a compensation technique based on pulse reference for intensity-modulated optical fiber sensors that can compensate the power fluctuation of the light source, the change of optical components transmission loss, and the coupler splitting ratio. The theoretical principle of this compensation technique is analyzed and a temperature sensor based on fiber coating-covered optical microfiber is carried out to demonstrate the compensation effect. The system noise is measured to be 0.0005 dB with the temperature sensitivity reaching -0.063 dB/℃, and the output drift is 0.006 dB in 2 h at room temperature. The output shows a slight variation （0.0061 dB） when the light source and the common liKht path suffer a 3 dB attenuation fluctuation. |
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| Bibliography: | Qiang Bian 1,2, Zhangqi Song 1, Yuzhong then 1, and Xueliang Zhang 1（1Academy of Ocean Science and Engineering, National University of Defense Technology, Changsha 410073, China 2College of Optoelectronics Science and Engineering, National University of Defense Technology, Changsha 410073, China） We propose a compensation technique based on pulse reference for intensity-modulated optical fiber sensors that can compensate the power fluctuation of the light source, the change of optical components transmission loss, and the coupler splitting ratio. The theoretical principle of this compensation technique is analyzed and a temperature sensor based on fiber coating-covered optical microfiber is carried out to demonstrate the compensation effect. The system noise is measured to be 0.0005 dB with the temperature sensitivity reaching -0.063 dB/℃, and the output drift is 0.006 dB in 2 h at room temperature. The output shows a slight variation （0.0061 dB） when the light source and the common liKht path suffer a 3 dB attenuation fluctuation. 31-1890/O4 |
| ISSN: | 1671-7694 |
| DOI: | 10.3788/COL201715.120603 |