1. Depolarization characteristics of spatial modes in imaging probe using short multimode fiber

    Depolarization characteristics of spatial modes in imaging probe using short multimode fiber

    Optical coherence tomography is one of the standard imaging modalities at present, widely used in the medical and biological fields to obtain three-dimensional (3D) images with high spatial resolution. However, the depth up to which the 3D images can be directly obtained is limited to within 3 mm. Therefore, the suitability of many kinds of catheters and needles has been considered for minimally invasive imaging. We have examined the utility of a short multimode fiber (SMMF) using graded index optical fibers for minimal invasive imaging of deeper areas, up to 6–8 mm. The diameter and length of the SMMF ...

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