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December 14, 2021 Tuesday 12:36:59 PM IST

Multimode Optical Fiber- the Rising Star in 3D Imaging

Researchers created a 3D imaging system with fibers roughly the width of a human hair. instead of traditionally used bulk fibers, these multimode optical fibers (MF’s) provide new, high-resolution 3D imaging systems. MFs are extremely efficient at transporting light and are designed to carry thousands of light rays, or modes, each of which can act as independent information channels within a very small area. Because of these characteristics, there is a great deal of interest in using MMFs in new, high-resolution 3D imaging systems, as previous techniques often require a collection of optics at least several centimeters in diameter.

 For endoscope applications in bioimaging or imaging inside difficult-to-reach places inside machines, the typical approach using bulk optics may not be viable. After characterizing the transmission matrix of the fiber, optical pulses can be used to reconstruct 3D images of a number of scenes. The results are promising for miniaturized and minimally invasive 3D endoscopic imaging applications.