Flexible lensless endoscope with a conformationally invariant multi-core fiber

The lensless endoscope represents the ultimate limit in miniaturization of imaging tools: an image can be transmitted through a (multi-mode or multi-core) fiber by numerical or physical inversion of the fiber's pre-measured transmission matrix. However, the transmission matrix changes completel...

Full description

Saved in:
Bibliographic Details
Published in:Optica 2019-09, Vol.6 (9), p.1185-1189
Main Authors: Tsvirkun, Victor, Sivankutty, Siddharth, Baudelle, Karen, Habert, Rémi, Bouwmans, Géraud, Vanvincq, Olivier, Andresen, Esben Ravn, Rigneault, Hervé
Format: Article
Language:English
Subjects:
Engineering Sciences
Optics
Photonic
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The lensless endoscope represents the ultimate limit in miniaturization of imaging tools: an image can be transmitted through a (multi-mode or multi-core) fiber by numerical or physical inversion of the fiber's pre-measured transmission matrix. However, the transmission matrix changes completely with only minute conformational changes in the fiber, which has so far limited lensless endoscopes to fibers that must be kept static. In this paper, we report for the first time, to the best of our knowledge, a lensless endoscope that is exempt from the requirement of static fiber by designing and employing a custom-designed conformationally invariant fiber. We give experimental and theoretical validations and determine the parameter space over which the invariance is maintained.
ISSN:2334-2536
2334-2536
DOI:10.1364/OPTICA.6.001185