Setting Up and Assessing a New Micro-Structured Waveguiding Fluorescent Architecture on Glass Entirely Elaborated by Sol–Gel Processing
Channel waveguides with diffraction gratings at their input and output for light injection and extraction, respectively, are extensively exploited for optical and photonic applications. In this paper, we report for the first time on such an architecture on glass entirely elaborated by sol–gel proces...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/3/979 |
| _version_ | 1797486632821063680 |
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| author | Morgane Bonnel Ibtihel Marzouk David Riassetto Alain Morand Davide Bucci Michel Langlet |
| author_facet | Morgane Bonnel Ibtihel Marzouk David Riassetto Alain Morand Davide Bucci Michel Langlet |
| author_sort | Morgane Bonnel |
| collection | DOAJ |
| description | Channel waveguides with diffraction gratings at their input and output for light injection and extraction, respectively, are extensively exploited for optical and photonic applications. In this paper, we report for the first time on such an architecture on glass entirely elaborated by sol–gel processing using a titanium-oxide-based photoresist that can be imprinted through a single photolithography step. This work is more particularly focused on a fluorescent architecture including channel waveguides doped with a ruthenium-complex fluorophore (tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II), Rudpp). The study demonstrates that this original sol–gel micro-structured architecture is well adapted to efficient channel waveguide/diffraction grating coupling and propagation of the fluorescence excitation and emission signals in the core of the channel waveguide. It demonstrates, in particular, a relatively large tolerance of several degrees in the angular injection fiber positioning and an important axial and vertical fiber spatial positioning tolerance of more than 100 µm at the Rudpp emission wavelength. The measurements also indicate that, in the conditions tested in this work, a Rudpp concentration of around 0.1 mM and a channel waveguide length of 2 to 5 mm offer the best trade-off in terms of excitation signal propagation and emission signal detection. This work constitutes a promising preliminary step toward the integration of our architecture into a microfluidic platform for fluorescence measurement in a liquid medium and waveguiding configuration. |
| first_indexed | 2024-03-09T23:36:04Z |
| format | Article |
| id | doaj.art-6be339340e7b423ab1e7b05e64e3b836 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T23:36:04Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-6be339340e7b423ab1e7b05e64e3b8362023-11-23T17:00:19ZengMDPI AGMaterials1996-19442022-01-0115397910.3390/ma15030979Setting Up and Assessing a New Micro-Structured Waveguiding Fluorescent Architecture on Glass Entirely Elaborated by Sol–Gel ProcessingMorgane Bonnel0Ibtihel Marzouk1David Riassetto2Alain Morand3Davide Bucci4Michel Langlet5LMGP, Grenoble INP, CNRS, University Grenoble Alpes, 38000 Grenoble, FranceLMGP, Grenoble INP, CNRS, University Grenoble Alpes, 38000 Grenoble, FranceLMGP, Grenoble INP, CNRS, University Grenoble Alpes, 38000 Grenoble, FranceIMEP-LAHC, Grenoble INP, CNRS, University Grenoble Alpes, 38000 Grenoble, FranceIMEP-LAHC, Grenoble INP, CNRS, University Grenoble Alpes, 38000 Grenoble, FranceLMGP, Grenoble INP, CNRS, University Grenoble Alpes, 38000 Grenoble, FranceChannel waveguides with diffraction gratings at their input and output for light injection and extraction, respectively, are extensively exploited for optical and photonic applications. In this paper, we report for the first time on such an architecture on glass entirely elaborated by sol–gel processing using a titanium-oxide-based photoresist that can be imprinted through a single photolithography step. This work is more particularly focused on a fluorescent architecture including channel waveguides doped with a ruthenium-complex fluorophore (tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II), Rudpp). The study demonstrates that this original sol–gel micro-structured architecture is well adapted to efficient channel waveguide/diffraction grating coupling and propagation of the fluorescence excitation and emission signals in the core of the channel waveguide. It demonstrates, in particular, a relatively large tolerance of several degrees in the angular injection fiber positioning and an important axial and vertical fiber spatial positioning tolerance of more than 100 µm at the Rudpp emission wavelength. The measurements also indicate that, in the conditions tested in this work, a Rudpp concentration of around 0.1 mM and a channel waveguide length of 2 to 5 mm offer the best trade-off in terms of excitation signal propagation and emission signal detection. This work constitutes a promising preliminary step toward the integration of our architecture into a microfluidic platform for fluorescence measurement in a liquid medium and waveguiding configuration.https://www.mdpi.com/1996-1944/15/3/979sol–gel processchannel waveguidediffraction gratingfluorescence |
| spellingShingle | Morgane Bonnel Ibtihel Marzouk David Riassetto Alain Morand Davide Bucci Michel Langlet Setting Up and Assessing a New Micro-Structured Waveguiding Fluorescent Architecture on Glass Entirely Elaborated by Sol–Gel Processing Materials sol–gel process channel waveguide diffraction grating fluorescence |
| title | Setting Up and Assessing a New Micro-Structured Waveguiding Fluorescent Architecture on Glass Entirely Elaborated by Sol–Gel Processing |
| title_full | Setting Up and Assessing a New Micro-Structured Waveguiding Fluorescent Architecture on Glass Entirely Elaborated by Sol–Gel Processing |
| title_fullStr | Setting Up and Assessing a New Micro-Structured Waveguiding Fluorescent Architecture on Glass Entirely Elaborated by Sol–Gel Processing |
| title_full_unstemmed | Setting Up and Assessing a New Micro-Structured Waveguiding Fluorescent Architecture on Glass Entirely Elaborated by Sol–Gel Processing |
| title_short | Setting Up and Assessing a New Micro-Structured Waveguiding Fluorescent Architecture on Glass Entirely Elaborated by Sol–Gel Processing |
| title_sort | setting up and assessing a new micro structured waveguiding fluorescent architecture on glass entirely elaborated by sol gel processing |
| topic | sol–gel process channel waveguide diffraction grating fluorescence |
| url | https://www.mdpi.com/1996-1944/15/3/979 |
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