| 1.55μm喇曼温度传感器的强循环解调方法 |
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| 引用本文： | 张利勋,廖云,刘永智,欧中华,代志勇,彭增寿.1.55μm喇曼温度传感器的强循环解调方法[J].激光技术,2006,30(2):165-167. |
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| 作者姓名： | 张利勋 廖云 刘永智 欧中华 代志勇 彭增寿 |
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| 作者单位： | 1.电子科技大学, 光电信息学院, 成都, 610054 |
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| 摘 要： | 针对1.55μm喇曼滤波器的隔离度不高的情况,提出了抑制背景噪声、热漂噪声积累、瑞利背向散射光窜扰反斯托克斯背向散射光的喇曼温度传感器的强循环解调方法。提高了系统的灵敏度、温度测量精度和稳定性;取消了恒温槽,降低了系统成本。实验表明,该解调方法使温度测量精度达到±0.05℃。
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| 关 键 词： | 散射 喇曼 瑞利 分布式光纤温度传感器 |
| 文章编号： | 1001-3806(2006)02-0165-03 |
| 收稿时间： | 2005-03-14 |
| 修稿时间： | 2005-06-13 |
Circulation demodulation method for 1.55μm Raman temperature sensors |
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| ZHANG Li-xun,LIAO Yun,LIU Yong-zhi,OU Zhong-hua,DAI Zhi-yong,PENG Zeng-shou.Circulation demodulation method for 1.55μm Raman temperature sensors[J].Laser Technology,2006,30(2):165-167. |
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| Authors: | ZHANG Li-xun LIAO Yun LIU Yong-zhi OU Zhong-hua DAI Zhi-yong PENG Zeng-shou |
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| Abstract: | Because the isolation performance of Raman filter is not high,a new demodulation method is proposed to suppress the system background noise,heat excursion accumulation and anti-Stokes backward scattering intermingled with Rayleigh backward scattering. The new method can improve the temperature precision,stability and sensitivity of system and reduce the system cost with the constant temperature groove abrogated. The experimental results show its measurement precision is better than 0.05℃. |
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| Keywords: | scattering Raman Rayleigh distributed optical fiber temperature sensor |
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