| Optical fiber temperature sensor based on wavelength-dependent detection |
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| 作者姓名： | 李志刚 杜振辉 王宝光 蒋诚志 |
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| 作者单位： | State Key Laboratory of Precision Measuring Technology and Instruments，Tianjin University，Tianjin 300072，State Key Laboratory of Precision Measuring Technology and Instruments，Tianjin University，Tianjin 300072，State Key Laboratory of Precision Measuring Technology and Instruments，Tianjin University，Tianjin 300072，State Key Laboratory of Precision Measuring Technology and Instruments，Tianjin University，Tianjin 300072 |
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| 基金项目： | This work was supported by the National Natural Science Foundation of China under Grant No. 40274046. |
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| 摘 要： | Semiconductor fiber temperature sensors have been used widely in many fields, but most of them pick up temperature by measuring the optical intensity of certain fixed narrow-band in absorption spectrum. Furthermore,they are sensitive to the loss of optical intensity and the fluctuation of light source power. The novel temperature measurement system proposed in this paper is based on the semiconductor absorption theory and the spectral analysis of method.To measure temperature,the sensor model detects not the certain narrow-band spectrum but the most spectra of the optical absorption edge.Therefore the measurement accuracy and the stability can be improved greatly.Experimental results are in agreement with theoretical analysis results perfectly.
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