Cargando…

Focusing light through multimode fibres using a digital micromirror device: a comparison study of non-holographic approaches

Focusing light through a multimode fibre (MMF) has attracted significant research interest, mainly driven by the need for miniature endoscopes in biomedicine. In recent years, digital micromirror devices (DMD) have become increasingly popular as a high-speed alternative to liquid-crystal spatial lig...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhao, Tianrui, Ourselin, Sebastien, Vercauteren, Tom, Xia, Wenfeng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Optical Society of America 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8240458/
https://www.ncbi.nlm.nih.gov/pubmed/33985150
http://dx.doi.org/10.1364/OE.420718
_version_ 1783715221928411136
author Zhao, Tianrui
Ourselin, Sebastien
Vercauteren, Tom
Xia, Wenfeng
author_facet Zhao, Tianrui
Ourselin, Sebastien
Vercauteren, Tom
Xia, Wenfeng
author_sort Zhao, Tianrui
collection PubMed
description Focusing light through a multimode fibre (MMF) has attracted significant research interest, mainly driven by the need for miniature endoscopes in biomedicine. In recent years, digital micromirror devices (DMD) have become increasingly popular as a high-speed alternative to liquid-crystal spatial light modulators for light focusing via wavefront shaping based on binary amplitude modulations. To exploit the potentials and limitations of the state-of-the-art DMD-based wavefront shaping methods, in this study, for the first time, we compared four representative, non-holographic and DMD-based methods that are reported so far in literature with the same experimental and simulation conditions, including a real-valued intensity transmission matrix (RVITM)-based algorithm, a complex-valued transmission matrix (TM)-based algorithm, a conditional probability algorithm and a genetic algorithm. We investigated the maximum achievable peak-to-background ratio (PBR) in comparison to theoretical expectations, and further improved the performance of the RVITM-based method. With both numerical simulations and experiments, we found that the genetic algorithm offered the highest PBR but suffered from the lowest focusing speed, while the RVITM-based algorithm provided a comparable PBR to that of the genetic algorithm, and the highest focusing speed.
format Online
Article
Text
id pubmed-8240458
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Optical Society of America
record_format MEDLINE/PubMed
spelling pubmed-82404582021-07-27 Focusing light through multimode fibres using a digital micromirror device: a comparison study of non-holographic approaches Zhao, Tianrui Ourselin, Sebastien Vercauteren, Tom Xia, Wenfeng Opt Express Article Focusing light through a multimode fibre (MMF) has attracted significant research interest, mainly driven by the need for miniature endoscopes in biomedicine. In recent years, digital micromirror devices (DMD) have become increasingly popular as a high-speed alternative to liquid-crystal spatial light modulators for light focusing via wavefront shaping based on binary amplitude modulations. To exploit the potentials and limitations of the state-of-the-art DMD-based wavefront shaping methods, in this study, for the first time, we compared four representative, non-holographic and DMD-based methods that are reported so far in literature with the same experimental and simulation conditions, including a real-valued intensity transmission matrix (RVITM)-based algorithm, a complex-valued transmission matrix (TM)-based algorithm, a conditional probability algorithm and a genetic algorithm. We investigated the maximum achievable peak-to-background ratio (PBR) in comparison to theoretical expectations, and further improved the performance of the RVITM-based method. With both numerical simulations and experiments, we found that the genetic algorithm offered the highest PBR but suffered from the lowest focusing speed, while the RVITM-based algorithm provided a comparable PBR to that of the genetic algorithm, and the highest focusing speed. Optical Society of America 2021-04-26 /pmc/articles/PMC8240458/ /pubmed/33985150 http://dx.doi.org/10.1364/OE.420718 Text en Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. https://creativecommons.org/licenses/by/4.0/https://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Zhao, Tianrui
Ourselin, Sebastien
Vercauteren, Tom
Xia, Wenfeng
Focusing light through multimode fibres using a digital micromirror device: a comparison study of non-holographic approaches
title Focusing light through multimode fibres using a digital micromirror device: a comparison study of non-holographic approaches
title_full Focusing light through multimode fibres using a digital micromirror device: a comparison study of non-holographic approaches
title_fullStr Focusing light through multimode fibres using a digital micromirror device: a comparison study of non-holographic approaches
title_full_unstemmed Focusing light through multimode fibres using a digital micromirror device: a comparison study of non-holographic approaches
title_short Focusing light through multimode fibres using a digital micromirror device: a comparison study of non-holographic approaches
title_sort focusing light through multimode fibres using a digital micromirror device: a comparison study of non-holographic approaches
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8240458/
https://www.ncbi.nlm.nih.gov/pubmed/33985150
http://dx.doi.org/10.1364/OE.420718
work_keys_str_mv AT zhaotianrui focusinglightthroughmultimodefibresusingadigitalmicromirrordeviceacomparisonstudyofnonholographicapproaches
AT ourselinsebastien focusinglightthroughmultimodefibresusingadigitalmicromirrordeviceacomparisonstudyofnonholographicapproaches
AT vercauterentom focusinglightthroughmultimodefibresusingadigitalmicromirrordeviceacomparisonstudyofnonholographicapproaches
AT xiawenfeng focusinglightthroughmultimodefibresusingadigitalmicromirrordeviceacomparisonstudyofnonholographicapproaches