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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Optical Society of America
2021
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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 |
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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 |
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