| 卞继城,郎婷婷,董新永,陈学文,田富鹏.基于马赫-曾德尔干涉仪的保偏光纤温度传感器研究[J].光电子激光,2016,27(7):687~691 |
| 基于马赫-曾德尔干涉仪的保偏光纤温度传感器研究 |
| Study of polarization maintaining fiber temperature sensor based on Mach-Zehnde r interferometer |
| 投稿时间：2016-01-20 |
| DOI： |
| 中文关键词: 光纤光学 光纤传感器 马赫-曾德尔干涉仪(MZI) 保偏光纤(PMF) 温度测量 |
| 英文关键词:fiber optics fiber sensor Mach-Zehnder interferometer(MZI) pola rization maintaining fiber (PMF) temperature measurement |
| 基金项目:国家自然科学基金(61205029)、浙江省自然科学基金(LY15F050004)和浙江省大学生科技创 新(2015R150054) 资助项目 (中国计量大学 光学与电子科技学院,浙江 杭州 310018) |
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| 中文摘要: |
| 根据马赫-曾德尔干涉仪(MZI)原理在两根标准 单模光纤(SMF)中间熔接一段保偏光纤(PMF),通过电弧 放电和熔接推挤形成凹-凸型锥,构成温度光纤传感器。利用PMF的包层模、纤芯模对温度 的灵敏度差异,通 过检测透射光谱中不同干涉谷的波长和强度变化,实现对温度的测量。实验表明,在25~70℃的范围内, 当PMF的长为30mm时,在1533.68nm和1560.92nm时的干涉谷对应的波长灵敏度为0.029 nm/℃和0.040nm/℃,对应的强度灵敏度为0.12dB/℃和0.097dB/℃；当PMF的长度为 40mm时,在1540.54nm和1568.64nm时的干涉谷对 应的波长灵敏度为0.083 nm/℃和0.099nm/℃,强度 灵敏度为0.152 dB/℃和－0.211dB/℃。根据 光谱仪0.01nm和0.01dB的分辨率,对应的波 长和强度分辨率分别为0.100 ℃和0.047℃。 |
| 英文摘要: |
| A fiber sensor based on Mach-Zechnder interference (MZI) for measuring tem perature is proposed in this paper.The temperature fiber sensor is constructed by a polariza tion maintaining fiber (PMF) between two conventional single-mode fibers (SMFs) and based on concatenated down and up-tapers simply fabricated by arc discharging and fusion splicing.B y observing the wavelength and intensity shifts of different interference dips,temperature c an be measured, since the core modes and the cladding modes have different sensitivities to temp erature. Experimental results indicate that when the temperature is from 25℃ to 70℃, for the 30mm PMF sensor,wavelength sensitivities of the wavelength dips at 1533.68nm and 1560.92nm are 0.029nm/℃ and 0.040nm/℃,and the intensity sensitivities are 0.12dB/℃ and 0.097dB/℃;for the 40mm PMF sensor, wavelength sensitivities of the wavelength dips at 1540.54nm and 1568.64nm are 0.0835nm/℃ and 0.0998nm/℃,and the intensity sensitivities are 0.152dB/℃ and －0.211dB/℃.For the spectrometer with a wavelength and intensity distinguishability of 0.01nm and 0.01dB,the proposed fiber sensor can reach the distinguishability of 0.100℃ and 0.047℃ for wavelength and int ensity,respectively. |
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