OCT系统中基于快速扫描光学延迟线的色散补偿

Dispersion Compensation in OCT System by Rapid Scanning Optical Delay Line

分析了光学相干层析成像(Optical Coherence Temography,OCT)系统中色散失配对系统纵向分辨率的影响,详细阐述了快速扫描光学延迟线(Rapid Scanning Optical Delay Line,RSOD)的色散性质,提出并采用基于RSOD的色散补偿方法,实验验证了这种色散补偿方法能够实现OCT系统的纵向分辨率接近于理论值,并因此得到了高质量的OCT图像.

The effect of unbalanced dispersion on axial resolution of OCT（Optical Coherence Tomography） is analyzed,and the dispersion characteristics of rapid scanning optical delay line （RSOD） is thoroughly developed. Accordingly, approach for dispersion compensation by RSOD is proposed and implemented. Experiments demonstrate that axial resolution approaching the theoretical value is achieved through deliberately dispersion compensation by RSOD,and OCT image with high quality is thus obtained.