基于REC技术的激光器阵列传感系统设计

发布时间：2018-05-03 02:14

本文选题：光纤传感器 + 激光阵列传感器　；参考：《红外与激光工程》2017年10期

【摘要】：分析并提出了基于重构等效啾啁(REC)技术激光器阵列的传感系统和解调算法。REC工艺满足激光器阵列的低成本大量生产,并具备小体积的优势,在未来传感领域中有较大的实用价值。提出了一种激光器扫描的高效算法用来测量光纤布拉格光栅(FBG)因外界应力而产生的位移量。系统的独特性在于阵列激光器通道仅需调谐0.4 nm采样数据,取代了扫描FBG主功率峰,并且算法在FBG的任意谱段均适用,可以用于多通道波峰复用的FBG传感网络中。在单通道和四通道的实验中对FBG反射谱的位移进行精确定位,初步实验证明了该系统和算法的有效性和可行性。算法得出单通道中心波长与实际中心波长误差均在5 pm以下,四通道可以到达在2 pm以下,应力与算法结果中心波长呈现很好的线性度。对今后多通道激光阵列传感具有一定参考价值。
[Abstract]:The sensor system based on reconstructed equivalent chirped chirped chirped laser array and its demodulation algorithm .REC process are analyzed and proposed to meet the low cost and mass production of laser array, and have the advantage of small volume. It has great practical value in the field of sensing in the future. An efficient laser scanning algorithm is proposed to measure the displacement of fiber Bragg grating (FBG) due to external stress. The uniqueness of the system lies in the fact that the array laser channel only needs to tune 0.4 nm sampling data instead of scanning the main power peak of FBG. The algorithm is applicable to any spectrum of FBG and can be used in multichannel wavelength multiplexing FBG sensor networks. The displacement of FBG reflectance spectrum is accurately located in single-channel and four-channel experiments, and the effectiveness and feasibility of the system and the algorithm are proved by the preliminary experiments. The error between the center wavelength of the single channel and the actual center wavelength is less than 5 pm, and that of the four channels is less than 2 pm. The linearity between the stress and the center wavelength of the algorithm is very good. It has certain reference value for multichannel laser array sensor in the future.
【作者单位】：江南大学物联网工程学院;南京大学现代工程与应用科学学院;
【基金】：江苏省六大人才高峰计划(DZXX-023) 江苏省产学研联合创新资金-前瞻性联合研究项目(BY2014023-11)
【分类号】：TN248

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