Resolution improvement of optical coherence tomography with software spectral shaping

Chih-Wei Lu, M. Tsai, Yih-ming Wang, Y. Kiang, C.C. Yang
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Abstract

We demonstrate dynamic spectral shaping in an optical coherence tomography (OCT) system with multiple scans of segmented spectral bands and software signal processing. With an effective spectral full-width at half-maximum (FWHM) of 45 nm, centered at 950 nm, we compress the interference fringe FWHM from 31 microns down to 7 microns, which is smaller than the theoretical limit of 8.9 microns if a Gaussian spectral shape is assumed, through the combined effect of dispersion compensation and spectral shaping.
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利用软件谱整形提高光学相干层析成像的分辨率
我们演示了在光学相干断层扫描(OCT)系统中对分割的光谱带进行多次扫描和软件信号处理的动态光谱整形。通过色散补偿和光谱整形的共同作用,我们将干涉条纹的半峰全宽(FWHM)从31微米压缩到7微米,小于假设高斯光谱形状时的理论极限8.9微米。
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