3D imaging through a single optical fiber

0559664 - ÚPT 2023 RIV US eng C - Conference Paper (international conference)
Stellinga, D. - Phillips, D. B. - Mekhail, S. P. - Selyem, A. - Turtaev, S. - Čižmár, Tomáš - Padgett, M. J. … Total 9 authors
3D imaging through a single optical fiber.
Proceedings of SPIE. In: Optical and Quantum Sensing and Precision Metrology II. Bellingham: SPIE, 2022 - (Scheuer, J.; Shahriar, S.), Roč. 12016 (2022), č. článku 120160M. Proceedings of SPIE, 12016. ISBN 978-1-5106-4903-3. ISSN 0277-786X.
[Optical and Quantum Sensing and Precision Metrology II. online (US), 20.02.2022-24.02.2022]
Institutional support: RVO:68081731
Keywords : single fiber imaging * endoscope
OECD category: Optics (including laser optics and quantum optics)
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12016/2616915/3D-imaging-through-a-single-optical-fiber/10.1117/12.2616915.short

Endoscopes and similar instruments use bundles of optical fibers to relay each pixel of an image from facet to facet. But even one of these multi-mode fibers supports enough modes to relay a complete image, the problem being that modal dispersion results in the image being scrambled. However, by treating the fiber as a complex aberration and applying corrective beam shaping it is possible to relay an image along the fiber length. Here we show that by beam-shaping of a pulsed laser we can produce a scanning spot at the distil end of the fiber and by measuring the time dependent intensity of the back-scattered light we can achieve 3D imaging. We demonstrate imaging up to 3m from the fiber with a lateral resolution of 60x60 pixels and a millimetric depth resolution. Such minimally invasive endoscopic 3D imaging has applications in healthcare and remote inspection.
Permanent Link: https://hdl.handle.net/11104/0341041