Untangled modes in multimode waveguides

D 2016

Untangled modes in multimode waveguides

PLÖSCHNER, Martin, Tomáš TYC and Tomáš ČIŽMÁR

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

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10306 Optics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Publication form

printed version "print"

References:

URL

RIV identification code

RIV/00216224:14310/16:00113627

Organization unit

Faculty of Science

ISBN

978-1-62841-999-3

ISSN

DOI

http://dx.doi.org/10.1117/12.2216205

UT WoS

000381932900020

Keywords in English

Fibre optics; Endoscopy; Digital holography; Optical modes

Abstract

V originále

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.

Citovat

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.

@inproceedings{1645596,
   author = {Plöschner, Martin and Tyc, Tomáš and Čižmár, Tomáš},
   address = {BELLINGHAM},
   booktitle = {COMPLEX LIGHT AND OPTICAL FORCES X},
   doi = {http://dx.doi.org/10.1117/12.2216205},
   editor = {Gluckstad, J Andrews, DL Galvez, EJ},
   keywords = {Fibre optics; Endoscopy; Digital holography; Optical modes},
   howpublished = {tištěná verze "print"},
   language = {eng},
   location = {BELLINGHAM},
   isbn = {978-1-62841-999-3},
   pages = {"SPIE, ICOAM"-"5"},
   publisher = {SPIE-INT SOC OPTICAL ENGINEERING},
   title = {Untangled modes in multimode waveguides},
   url = {https://spie.org/Publications/Proceedings/Paper/10.1117/12.2216205},
   year = {2016}
}

TY  - JOUR
ID  - 1645596
AU  - Plöschner, Martin - Tyc, Tomáš - Čižmár, Tomáš
PY  - 2016
TI  - Untangled modes in multimode waveguides
PB  - SPIE-INT SOC OPTICAL ENGINEERING
CY  - BELLINGHAM
SN  - 9781628419993
KW  - Fibre optics
KW  - Endoscopy
KW  - Digital holography
KW  - Optical modes
UR  - https://spie.org/Publications/Proceedings/Paper/10.1117/12.2216205
L2  - https://spie.org/Publications/Proceedings/Paper/10.1117/12.2216205
N2  - 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.
ER  -

PLÖSCHNER, Martin, Tomáš TYC and Tomáš ČIŽMÁR. Untangled modes in multimode waveguides. In Gluckstad, J Andrews, DL Galvez, EJ. \textit{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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