光纤傅里叶光谱仪干涉图均匀抽样方法  

UNIFORM SAMPLING METHOD OF OPTICAL FIBER FOURIER TRANSFORM SPECTROMETER

作　　者：李保生[1] 刘勇[2] 王安[2] 

机构地区：[1]合肥工业大学仪器科学与光电工程学院,安徽合肥230009 [2]中国科学院安徽光学精密机械研究所,安徽合肥230031

出　　处：《红外与毫米波学报》2007年第3期201-204,共4页Journal of Infrared and Millimeter Waves

基　　金：中国科学院科技创新基金资助项目(CXJJ-161);中国科学院合肥研究院院长基金及创新科研专项资助项目(20020603)

摘　　要：提出了一种干涉图均匀抽样的新方法.采用高速数据采集卡同时采样参考光信号和测试光信号,依据参考光信号与采样点数和测试光信号与采样点数的关系对测试光信号重新抽样得到等光程间隔采样的干涉图.数值仿真和实验研究表明:干涉图均匀抽样法实现了光纤傅里叶变换光谱仪干涉图的等间隔采样,消除了附加的谱线可用于傅里叶变换光谱仪的采样系统中,尤其是在短波段干涉光谱仪中有很强的优势.Equal interval sampling of intefferogram is realized by a novel uniform sampling method in optical fiber Fourier spectrometer （FFTS）. The reference beam and test beam are simultaneously over-sampled. The Interferogram of test beam versus optical path difference is obtained by the relation of sample time versus fringes number and that of interference frin- ges of test beam versus sample time. Simulation calculation and experimental studies show that the method is effective for eliminating unequal interval sample and many affixation spectra lines. The method can be used in the sample systems not only in FFTS, but also in conventional Fourier spectrometer. Specially, it can also play a significant role in short wavelength Fourier spectroscopy than other methods.

关 键 词：傅里叶变换光谱 光纤干涉仪 等间隔采样 

分 类 号：TH744.123[机械工程—光学工程]