Sub-diffraction computational imaging via a flexible multicore-multimode fiber.

Autor: Lyu Z, Abrashitova K, de Boer JF, Andresen ER, Rigneault H, Amitonova LV
Jazyk: angličtina
Zdroj: Optics express [Opt Express] 2023 Mar 27; Vol. 31 (7), pp. 11249-11260.
DOI: 10.1364/OE.481052
Abstrakt: An ultra-thin multimode fiber is an ideal platform for minimally invasive microscopy with the advantages of a high density of modes, high spatial resolution, and a compact size. In practical applications, the probe needs to be long and flexible, which unfortunately destroys the imaging capabilities of a multimode fiber. In this work, we propose and experimentally demonstrate sub-diffraction imaging through a flexible probe based on a unique multicore-multimode fiber. A multicore part consists of 120 Fermat's spiral distributed single-mode cores. Each of the cores offers stable light delivery to the multimode part, which provides optimal structured light illumination for sub-diffraction imaging. As a result, perturbation-resilient fast sub-diffraction fiber imaging by computational compressive sensing is demonstrated.
Databáze: MEDLINE