Endoscopic Imaging Using a Multimode Optical Fibre Calibrated with Multiple Internal References
The interferometric acquisition of the transmission matrix (TM) of a multimode optical fibre (MMF), which is at the heart of multimode fibre-based endoscopic imaging methods, requires using a reference beam. Attempts to use an internal reference, that is to provide the reference in a common pathway...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/1/37 |
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| author | Petr Jákl Martin Šiler Jan Ježek Ángel Cifuentes Johanna Trägårdh Pavel Zemánek Tomáš Čižmár |
| author_facet | Petr Jákl Martin Šiler Jan Ježek Ángel Cifuentes Johanna Trägårdh Pavel Zemánek Tomáš Čižmár |
| author_sort | Petr Jákl |
| collection | DOAJ |
| description | The interferometric acquisition of the transmission matrix (TM) of a multimode optical fibre (MMF), which is at the heart of multimode fibre-based endoscopic imaging methods, requires using a reference beam. Attempts to use an internal reference, that is to provide the reference in a common pathway geometry through the MMF itself, lead to a speckled reference intensity and consequential occurrence of “blind spots”—locations where insufficient optical power in the reference wave inflicts strong measurement errors. Here we show that combining a relatively small number of TMs, which are measured using different internal references, facilitates a complete elimination of blind spots, and thereby a significant enhancement of the imaging quality. |
| first_indexed | 2024-03-10T00:41:55Z |
| format | Article |
| id | doaj.art-3016c867710b481888187cdccd7ea90d |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T00:41:55Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-3016c867710b481888187cdccd7ea90d2023-11-23T15:06:24ZengMDPI AGPhotonics2304-67322022-01-01913710.3390/photonics9010037Endoscopic Imaging Using a Multimode Optical Fibre Calibrated with Multiple Internal ReferencesPetr Jákl0Martin Šiler1Jan Ježek2Ángel Cifuentes3Johanna Trägårdh4Pavel Zemánek5Tomáš Čižmár6Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 61264 Brno, Czech RepublicInstitute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 61264 Brno, Czech RepublicInstitute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 61264 Brno, Czech RepublicInstitute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 61264 Brno, Czech RepublicInstitute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 61264 Brno, Czech RepublicInstitute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 61264 Brno, Czech RepublicInstitute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 61264 Brno, Czech RepublicThe interferometric acquisition of the transmission matrix (TM) of a multimode optical fibre (MMF), which is at the heart of multimode fibre-based endoscopic imaging methods, requires using a reference beam. Attempts to use an internal reference, that is to provide the reference in a common pathway geometry through the MMF itself, lead to a speckled reference intensity and consequential occurrence of “blind spots”—locations where insufficient optical power in the reference wave inflicts strong measurement errors. Here we show that combining a relatively small number of TMs, which are measured using different internal references, facilitates a complete elimination of blind spots, and thereby a significant enhancement of the imaging quality.https://www.mdpi.com/2304-6732/9/1/37fibre endoscopyspatial light modulatortransmission matrix |
| spellingShingle | Petr Jákl Martin Šiler Jan Ježek Ángel Cifuentes Johanna Trägårdh Pavel Zemánek Tomáš Čižmár Endoscopic Imaging Using a Multimode Optical Fibre Calibrated with Multiple Internal References Photonics fibre endoscopy spatial light modulator transmission matrix |
| title | Endoscopic Imaging Using a Multimode Optical Fibre Calibrated with Multiple Internal References |
| title_full | Endoscopic Imaging Using a Multimode Optical Fibre Calibrated with Multiple Internal References |
| title_fullStr | Endoscopic Imaging Using a Multimode Optical Fibre Calibrated with Multiple Internal References |
| title_full_unstemmed | Endoscopic Imaging Using a Multimode Optical Fibre Calibrated with Multiple Internal References |
| title_short | Endoscopic Imaging Using a Multimode Optical Fibre Calibrated with Multiple Internal References |
| title_sort | endoscopic imaging using a multimode optical fibre calibrated with multiple internal references |
| topic | fibre endoscopy spatial light modulator transmission matrix |
| url | https://www.mdpi.com/2304-6732/9/1/37 |
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