除法式磁光盘信号检测方法的研究

Study of the Detection Method Using the Intensity Dividing Readout for the Magneto-optical Disks

研究了除法式磁光信号检测的原理和方法 ,分析表明 ,该检测方式不受激光功率的波动和盘片反射率变化的影响 ,提高了数据读出的准确性 .实验结果显示除法式检测方式比差动式磁光信号检测更适合静态实验的要求 .

The intensity dividing readout (IDR) method for magneto optical disks is analytically discussed. Compared with the differential readout method, the IDR method can eliminate the influence of the fluctuation of the laser power and the reflectivity on the thin film. Experimental results show that it′s a useful measuring method for evaluating magneto optic media in the static test.