Untangled modes in multimode fibres for flexible microendoscopy

Martin Plöschner, Tomáš Tyc, Tomáš Čižmár

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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 μm. 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. In perfect cylindrical waveguides we can find optical modes that do not change their spatial distribution as they propagate through. We show that typical fibers retain such highly ordered propagation of light over remarkably large distances, which allows correction operators to be introduced in imaging geometries in order to maintain high-quality performance even in such flexible micro-endoscopes.

Original languageEnglish
Title of host publicationOptical Systems Design 2015
Subtitle of host publicationComputational Optics
EditorsDaniel G. Smith, Frank Wyrowski, Andreas Erdmann
Place of PublicationBellingham
PublisherSPIE-International Society for Optical Engineering
ISBN (Print)9781628418194
Publication statusPublished - 23 Sept 2015
EventSPIE Optical Systems Design 2015: Computational Optics - Friedrich-Schiller-University, Jena, Germany
Duration: 7 Sept 201510 Sept 2015
http://spie.org/conferences-and-exhibitions/past-events/past-conferences-and-exhibitions/past-events/optical-systems-design/optical-systems-design-2015 (Link to Conference details)

Publication series

NameProceedings of SPIE


ConferenceSPIE Optical Systems Design 2015
Internet address


  • Digital holography
  • Endoscopy
  • Fibre optics
  • Optical modes

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Untangled modes in multimode fibres for flexible microendoscopy'. Together they form a unique fingerprint.

Cite this