用于半导体激光器电导数曲线的降噪方法  

Denoising method applied to electrical derivative data of semiconductor laser diode

作　　者：郜峰利[1] 郭树旭[1] 张振国[1] 于思瑶[1] 曹军胜[1] 张爽[1] 

机构地区：[1]吉林大学电子科学与工程学院,长春130012

出　　处：《吉林大学学报（工学版）》2009年第5期1288-1291,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(60471009);吉林省重大科技发展计划项目(200403001-4)

摘　　要：根据非线性扩散方程的降噪原理,把非线性扩散方程应用于半导体激光器电导数数据的去噪。降噪实验证明,与均值滤波降噪方法相比,这种降噪方法可以更有效地减小数据中存在的噪声,同时保持电导数曲线在阈值电流处的下沉,降低了参数测量的误差,利用去噪后测量的参数可对半导体激光器质量和可靠性进行有效的评价。According to the denoising theory based on the nonlinear diffusion equation, the nonlinear diffusion equation was applied to denoising of electrical derivative data of semiconductor laser diode （LD）. Comparing with the denoising method based on mean value filtering, the experiment results indicated that this denoising method can reduce the noise in electrical derivative data of LD more effectively, and moreover the dip height of the electrical derivative curve at the threshold current can be preserved. The errors in parameters obtained from the measured electrical derivative curve were reduced too. The quality and reliability of LD can be estimated effectively using parameters from the measured electrical derivative curve after being denoised.

关 键 词：光电子学与激光技术 半导体激光器 扩散方程 电导数 可靠性 数据降噪 

分 类 号：TN365[电子电信—物理电子学]