Observing distant objects with a multimode fiber-based holographic endoscope

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F21%3A00543628" target="_blank" >RIV/68081731:_____/21:00543628 - isvavai.cz</a>

Result on the web

<a href="https://aip.scitation.org/doi/10.1063/5.0038367" target="_blank" >https://aip.scitation.org/doi/10.1063/5.0038367</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0038367" target="_blank" >10.1063/5.0038367</a>

Result language

angličtina

Original language name

Observing distant objects with a multimode fiber-based holographic endoscope

Original language description

Holographic wavefront manipulation enables converting hair-thin multimode optical fibers into minimally invasive lensless imaging instruments conveying much higher information densities than conventional endoscopes. Their most prominent applications focus on accessing delicate environments, including deep brain compartments, and recording micrometer-scale resolution images of structures in close proximity to the distal end of the instrument. Here, we introduce an alternative far-field endoscope capable of imaging macroscopic objects across a large depth of field. The endoscope shaft with dimensions of 0.2 x 0.4 mm(2) consists of two parallel optical fibers: one for illumination and the other for signal collection. The system is optimized for speed, power efficiency, and signal quality, taking into account specific features of light transport through step-index multimode fibers. The characteristics of imaging quality are studied at distances between 20 mm and 400 mm. As a proof-of-concept, we provide imaging inside the cavities of a sweet pepper commonly used as a phantom for biomedically relevant conditions. Furthermore, we test the performance on a functioning mechanical clock, thus verifying its applicability in dynamically changing environments. With the performance reaching the standard definition of video endoscopes, this work paves the way toward the exploitation of minimally invasive holographic micro-endoscopes in clinical and diagnostics applications.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

<a href="/en/project/EF15_003%2F0000476" target="_blank" >EF15_003/0000476: Holographic endoscopy for in vivo applications</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

APL Photonics

ISSN

2378-0967

e-ISSN

2378-0967

Volume of the periodical

6

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

036112

UT code for WoS article

000636339000001

EID of the result in the Scopus database

2-s2.0-85103567867