PLÖSCHNER, Martin, Tomáš TYC and Tomáš ČIŽMÁR. Untangled modes in multimode waveguides. In Gluckstad, J Andrews, DL Galvez, EJ. COMPLEX LIGHT AND OPTICAL FORCES X. BELLINGHAM: SPIE-INT SOC OPTICAL ENGINEERING, 2016, p. "SPIE, ICOAM"-"5", 6 pp. ISBN 978-1-62841-999-3. Available from: https://dx.doi.org/10.1117/12.2216205.
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Basic information
Original name Untangled modes in multimode waveguides
Authors PLÖSCHNER, Martin (203 Czech Republic), Tomáš TYC (203 Czech Republic, belonging to the institution) and Tomáš ČIŽMÁR (203 Czech Republic, guarantor).
Edition BELLINGHAM, COMPLEX LIGHT AND OPTICAL FORCES X, p. "SPIE, ICOAM"-"5", 6 pp. 2016.
Publisher SPIE-INT SOC OPTICAL ENGINEERING
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10306 Optics
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Publication form printed version "print"
WWW URL
RIV identification code RIV/00216224:14310/16:00113627
Organization unit Faculty of Science
ISBN 978-1-62841-999-3
ISSN 0277-786X
Doi http://dx.doi.org/10.1117/12.2216205
UT WoS 000381932900020
Keywords in English Fibre optics; Endoscopy; Digital holography; Optical modes
Tags rivok
Tags International impact, Reviewed
Changed by Changed by: Mgr. Marie Šípková, DiS., učo 437722. Changed: 15/4/2020 11:35.
Abstract
Small, fibre-based endoscopes have already improved our ability to image deep within the human body. A novel approach introduced recently utilised disordered light within a standard multimode optical fibre for lensless imaging. Importantly, this approach brought very significant reduction of the instruments footprint to dimensions below 100 pm. The most important limitations of this exciting technology is the lack of bending flexibility - imaging is only possible as long as the fibre remains stationary. The only route to allow flexibility of such endoscopes is in trading-in all the knowledge about the optical system we have, particularly the cylindrical symmetry of refractive index distribution. In perfect straight step-index cylindrical waveguides we can find optical modes that do not change their spatial distribution as they propagate through. In this paper we present a theoretical background that provides description of such modes in more realistic model of real-life step-index multimode fibre taking into account common deviations in distribution of the refractive index from its ideal step-index profile. Separately, we discuss how to include the influence of fibre bending.
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