Open AccessPhotonic candle – focusing light using nano-bore optical fibers
Author(s) -
H. Schneidewind,
Matthias Zeisberger,
Malte Plidschun,
Stefan Weidlich,
Markus A. Schmidt
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.031706
Subject(s) - optics , optical fiber , structuring , photonics , light beam , computer science , photonic crystal fiber , focus (optics) , materials science , physics , finance , economics
Focusing light represents one of the fundamental optical functionalities that is used in a countless number of situations. Here we introduce the concept of nano-bore optical fiber mediated light focusing that allows to efficiently focus light at micrometer distance from the fiber end face. Since the focusing effect is provided by the fundamental fiber mode, device implementation is extremely straightforward since no post-processing or nano-structuring is necessary. Far-field measurements on implemented fibers, simulations, and a dual-Gaussian beam toy model confirm the validity of the concept. Due to its unique properties such as strong light localization, a close to 100% implementation success rate, extremely high reproducibility, and its compatibility with current fiber circuitry, the concept will find application in numerous areas that demand to focus at remote distances.