摘要
研制了一种以数字信号处理器(DSP)为核心的光纤光栅波长解调仪,并提出了一种基于定点DSP的快速寻峰算法,实现了对波长的快速解调。解调原理基于高分辨率分光计的衍射作用,使光谱沿波长分布空间展开,寻峰算法基于高斯曲线拟合。实验证明,其精度适于工程应用,且具有结构简单、扫描范围宽、解调速度快的特点。
A in this treatise, c demodulation instrument for fiber Bragg grating based on DSP was developed oupled with the arithmetic of Gaussian fit peak finding based on fixed-point DSP. The principle of the instrument is based on Ibsen＇s high-resolution spectrometer platform, which spatially separates a wavelength spectrum utilizing multiple transmission gratings. The experiments show that the wavelength accuracy is fit for industrial application. The demodulation instrument features simple structure, large measurement range and fast measurement frequency.
出处
《半导体光电》
EI
CAS
CSCD
北大核心
2008年第5期778-781,共4页
Semiconductor Optoelectronics
