微型光纤光谱仪的研制及性能测试

Development and Performance Test of a Micro Fiber Spectrometer

研制了一种微型光纤光谱仪,介绍了其基本原理及结构,用微型光纤光谱仪对汞灯特征谱线进行了实验测试,通过对测试结果的分析得到了该型光谱仪的主要性能参数。实验表明,该微型光纤光谱仪的波长准确度小于1 nm,在采用芯径为50μm的多模光纤时,光谱带宽可以达到1.31 nm。

A new type of micro fiber spectrometer is introduced.The basic principle and structure of the fiber spectrometer are described.During the experiment,Hg lamp is used as light source,whose spectrum is checked and recorded.After calculation and analysis of the testing data,the main performance indexes of the fiber spectrometer are identified.From the testing result,the wavelength accuracy of the micro fiber spectrometer is smaller than 1 nm.When the core diameter of fiber is 50 μm,the spectrum band width can reach 1.31nm.