Abstract
Recently, remarkable attention is focused on the low coherence interferometry in order to realize visualization of thin sections of biological tissue. In our experiment, a specific low coherence interferometer was developed to evaluate quantitatively the spatial resolution of the detected image of a fine test pattern. It was then found that the resolution was nearly 10μm along the depth and<10μm in the cross section. Moreover, in actual optical CT, it is necessary to determine as precisely the dimensions of a biological tissue as possible. To do this, the refractive index n and thickness t of the biological tissue should be measured simultaneously. We proposed and developed a new technique for simultaneous measurement of n and t based on the low coherence interferometry. The detail will be described in this paper. Recent activities of there methods for optical CT are also presented.
