摘要
基于正弦波磁光调制原理,同时利用利萨如图形方法,对正弦波磁光调制和方波磁光调制进行了计算机模拟.模拟结果表明,正弦波磁光调制具有磁光调制原理所描述的基本特性,并且其偏振角度检测准确度可达到0.001°;而方波磁光调制具有更好的应用特性,不存在波形失真问题,其θr0取值不受小角度条件的限制,其偏振角度检测准确度可高于0.001°.对两种磁光调制进行的时比性实验研究,进一步支持了以上结论,表明方波磁光调制无论用于信号调制或用于偏振角度检测都具有独特的优势.另外,在实验中发现了两种磁光调制的限幅效应,并时其形成的原因进行了初步分析.
Based on the principle of sine magneto-optical modulation, by using Lissajous figure method, the sine wave magneto-optical modulation and the rectangular wave magneto-optical modulation were modeled by computer. The modeling shown us that sine wave magneto-optical modulation has basic properties described by its principle, and its precision can reach 0. 001° in polarization measuring; and that rectangular wave magneto-optical modulation has more excellent properties in application, such as there is no problem of signal distortion in it, its θЮ won＇t limited by small angle condition, and its precision would exceed 0. 001° in polarization measuring. The contrastive experiments about these two magneto-optical modulations supported above conclusion. It was shown that rectangular wave magneto-optical modulation possesses particular advantage whether be used in signal managing or be used in polarization measuring, and it will have a fine prospect in application. The amplitude limited effect in these two magneto-optical modulation was found in experiment and was analyzed tentatively.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2007年第B06期192-197,共6页
Acta Photonica Sinica
基金
陕西省教育厅重点实验室科研计划(05JS54)资助
关键词
物理光学
磁光调制
模拟
实验
正弦波
方波
Physical optics
Magneto-optical modulation
Modeling
Experiment
Sine wave
Rectangular wave
作者简介
LI Yong-an was born in Shaanxi Province in 1959. He received his bachelor＇s degree from Department of Physics, Northwest University in 1982. Now he is a senior engineer and a Ph. D candidate in Institute of Photonics and Photon-Technology, Northwest University. His current research interest is optics.Tel：029-88302068 Email：liyonganxx@126．com
