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Nanobore fiber focus trap with enhanced tuning capabilities
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SYSNO ASEP 0517991 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nanobore fiber focus trap with enhanced tuning capabilities Author(s) Plidschun, M. (DE)
Weidlich, S. (DE)
Šiler, Martin (UPT-D) RID, ORCID, SAI
Weber, K. (DE)
Čižmár, Tomáš (UPT-D) RID, ORCID, SAI
Schmidt, M.A. (DE)Number of authors 6 Source Title Optics Express. - : Optical Society of America - ISSN 1094-4087
Roč. 27, č. 25 (2019), s. 36221-36230Number of pages 10 s. Publication form Print - P Language eng - English Country US - United States Keywords fiber optic sensors ; optical fibers Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects EF15_003/0000476 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support UPT-D - RVO:68081731 UT WOS 000503978100016 EID SCOPUS 85076443698 DOI 10.1364/OE.27.036221 Annotation Confinement in fiber traps with two optical fibers facing one another relies on
balancing the optical forces originating from the interaction of a scattering micro-object with the light beams delivered through the fibers. Here we demonstrate a novel type of dual fiber trap that involves the use of nanobore fibers, having a nano-channel located in the center of their fiber cores. This nano-element leads to a profound redistribution of the optical intensity and to considerably higher field gradients, yielding a trapping potential with greatly improved tuning properties compared to standard step-index fiber types. We evaluate the trap performance as a function of the fiber separation and find substantially higher stiffness for the nanobore fiber trap, especially in the range of short inter-fiber separations, while intermediate distances exhibit axial stiffness below that of the standard fiber. The results are in agreement with theoretical predictions and reveal that the exploitation of nanobore fibers allows for combinations of transverse and axial stiffness that cannot be accessed with common step-index fibers.Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2020 Electronic address https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-27-25-36221&id=423633
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