一种基于FPGA的光纤光栅高速解调算法  

A FPGA-based high-speed demodulation algorithm for FBG

作　　者：申雅峰[1] 张磊[1] 胡春艳[1] 

机构地区：[1]中航工业北京长城计量测试技术研究所,北京100095

出　　处：《光通信研究》2014年第2期39-42,共4页Study on Optical Communications

基　　金：航空技术创新基金资助项目(2013ZC44001)

摘　　要：为了使光纤光栅在实际工程中得到更广泛的应用,文章提出了一种基于FPGA(现场可编程门阵列)的光纤光栅高速解调算法及关键技术的实现方法。采用FPGA设计了信号解调硬件平台,通过低复杂度的L-M拟合算法,实现了光纤光栅反射光谱峰值的精确定位,对L-M算法进行简化处理提高了解调处理速度。实验结果表明,该算法具有较好的稳定性和重复性,在满足高精度测量的同时,还能满足高速实时的要求。For still wider applications of Fiber Bragg Grating （FBG）in practical proj ects,this paper presents a FPGA-based high-speed demodulation algorithm and the implementation of its key technologies.It designs a signal demodulation hardware platform using the FPGA technology,implemets the accurate positioning of the FBG reflective spectral peak values using the low-complexity L-M fitting algorithm and increases the demodulation processing speed by simplifying the L-M algorithm.The test results show that this algorithm has good stability and repeatability and meets the requirements for high-speed,real-time and highly accurate measurement.

关 键 词：光纤布拉格光栅 波长解调 L-M算法 高速解调 现场可编程门阵列 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]