激光与光电子学进展, 2012, 49 (5): 050602, 网络出版: 2012-03-26
白光干涉光纤法布里珀罗腔的拟合求解 
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Fitting Calculation of White-Light Interferometric Optical Fiber Fabry-Pérot Cavity
光纤光学 光纤传感器 白光干涉 法布里珀罗腔 拟合算法 fiber optics optical fiber sensor white-light interferometry Fabry-Pérot cavity fitting algorithm
摘要
采用Levenberg-Marquardt算法（LMA）对光纤法布里珀罗(F-P)腔的白光干涉光谱进行拟合；通过对光源光谱的高斯拟合处理和对LMA拟合参数范围的限定，提高了其对光源波动的抗干扰能力和腔长解调的分辨率；通过研究不同质量、数量的采样数据对解调算法的影响，比较LMA相对于相关法的效率优势；最后通过实验得到了装置综合标准偏差（1 nm）和光源功率波动下的LMA算法的标准偏差（0.2 nm）。
Abstract
The Levenberg-Marquardt (LMA) is used for the demodulation of absolute Fabry-Pérot (F-P) cavity based on the optical fiber white-light interferometry that is more efficient than cross correlation algorithm. High immunity to the perturbation of the source power is achieved by its Gauss-fitting and setting limitation to the parameters of LMA. Signal data selection principle is discussed and standard deviations of experimental device and LMA under the perturbation of power are measured.
王为宇, 张敏, 谭峭峰. 白光干涉光纤法布里珀罗腔的拟合求解[J]. 激光与光电子学进展, 2012, 49(5): 050602. Wang Weiyu, Zhang Min, Tan Qiaofeng. Fitting Calculation of White-Light Interferometric Optical Fiber Fabry-Pérot Cavity[J]. Laser & Optoelectronics Progress, 2012, 49(5): 050602.
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