Sub-pixel Algorithms on Linear-array Detector Grating Spectrometer

被引:1
|
作者
Qin, Chuan [1 ]
Zhao, Jianlin [1 ]
Jiang, Biqiang [1 ]
Yang, Dexing [1 ]
机构
[1] Northwestern Polytech Univ, Shaanxi Key Lab Opt Informat Technol, Minist Educ, Sch Sci, Xian 710072, Peoples R China
关键词
FBG; Linear-array detector; Spectrometer; Transfer matrix method; Sub-pixel algorithm; INTERROGATION; SYSTEM;
D O I
10.1117/12.2001359
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The spectrum of Gauss apodized fiber Bragg grating (FBG) is analyzed by using transfer matrix method, and the basic principles of sub-pixel curve fitting algorithms including mass center, Gauss and full-width-at-half-maximum (FWHM) are discussed. Based on this, simulation and experimental results are given to compare the three curve fitting algorithms. The results reveal that in simulation, mass center fitting method with an accuracy of 13pm while in experiment, FWHM fitting method with an accuracy of 23pm provides a better match to the actual curve. The research achievements have been applied on the prototype of linear-array detector grating spectrometer and have potential market in portable FBG interrogation field.
引用
收藏
页数:7
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