Improving the width of lossy mode resonances in a reflection configuration D-shaped fiber by nanocoating laser ablation

Omar Fuentes; Patrizio Vaiano; Ignacio del Villar; Giuseppe Quero; Jesús Corres; Marco Consales; Ignacio Matías; Andrea Cusano

doi:10.1364/OL.402177

Improving the width of lossy mode resonances in a reflection configuration D-shaped fiber by nanocoating laser ablation

Omar Fuentes^*
, Patrizio Vaiano
, Ignacio del Villar
, Giuseppe Quero
, Jesús Corres
, Marco Consales
, Ignacio Matías
, Andrea Cusano

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

The full width at half maximum (FWHM) of lossy mode resonances (LMRs) in the optical spectrum depends on the homogeneity of the thin film deposited. In this Letter, a method for improving the FWHM is applied for an LMR generated by a D-shaped optical fiber in reflection configuration. For this purpose, three samples with different attenuation were deposited with DC sputtering thin films of SnO₂−x, and a further controlled immersion of the samples in water was performed. A laser-cleaner method was used to improve the FWHM characteristics of one of the samples from 106 to 53 nm. This improvement can be applied to thin-film-based sensors where there is a problem with the inhomogeneity of the coating thickness. Moreover, with this technique, it was proved that a coated length of just 3–4 mm permits the generation of an LMR, with implications for the miniaturization of the final device.

Original language	English
Pages (from-to)	4738-4741
Number of pages	4
Journal	Optics Letters
Volume	45
Issue number	17
DOIs	https://doi.org/10.1364/OL.402177
Publication status	Published - 1 Sept 2020
Externally published	Yes

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10.1364/OL.402177

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title = "Improving the width of lossy mode resonances in a reflection configuration D-shaped fiber by nanocoating laser ablation",

abstract = "The full width at half maximum (FWHM) of lossy mode resonances (LMRs) in the optical spectrum depends on the homogeneity of the thin film deposited. In this Letter, a method for improving the FWHM is applied for an LMR generated by a D-shaped optical fiber in reflection configuration. For this purpose, three samples with different attenuation were deposited with DC sputtering thin films of SnO2−x, and a further controlled immersion of the samples in water was performed. A laser-cleaner method was used to improve the FWHM characteristics of one of the samples from 106 to 53 nm. This improvement can be applied to thin-film-based sensors where there is a problem with the inhomogeneity of the coating thickness. Moreover, with this technique, it was proved that a coated length of just 3–4 mm permits the generation of an LMR, with implications for the miniaturization of the final device.",

author = "Omar Fuentes and Patrizio Vaiano and \{del Villar\}, Ignacio and Giuseppe Quero and Jes{\'u}s Corres and Marco Consales and Ignacio Mat{\'i}as and Andrea Cusano",

note = "Publisher Copyright: {\textcopyright} 2020 Optical Society of America",

year = "2020",

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doi = "10.1364/OL.402177",

language = "English",

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TY - JOUR

T1 - Improving the width of lossy mode resonances in a reflection configuration D-shaped fiber by nanocoating laser ablation

AU - Fuentes, Omar

AU - Vaiano, Patrizio

AU - del Villar, Ignacio

AU - Quero, Giuseppe

AU - Corres, Jesús

AU - Consales, Marco

AU - Matías, Ignacio

AU - Cusano, Andrea

PY - 2020/9/1

Y1 - 2020/9/1

N2 - The full width at half maximum (FWHM) of lossy mode resonances (LMRs) in the optical spectrum depends on the homogeneity of the thin film deposited. In this Letter, a method for improving the FWHM is applied for an LMR generated by a D-shaped optical fiber in reflection configuration. For this purpose, three samples with different attenuation were deposited with DC sputtering thin films of SnO2−x, and a further controlled immersion of the samples in water was performed. A laser-cleaner method was used to improve the FWHM characteristics of one of the samples from 106 to 53 nm. This improvement can be applied to thin-film-based sensors where there is a problem with the inhomogeneity of the coating thickness. Moreover, with this technique, it was proved that a coated length of just 3–4 mm permits the generation of an LMR, with implications for the miniaturization of the final device.

AB - The full width at half maximum (FWHM) of lossy mode resonances (LMRs) in the optical spectrum depends on the homogeneity of the thin film deposited. In this Letter, a method for improving the FWHM is applied for an LMR generated by a D-shaped optical fiber in reflection configuration. For this purpose, three samples with different attenuation were deposited with DC sputtering thin films of SnO2−x, and a further controlled immersion of the samples in water was performed. A laser-cleaner method was used to improve the FWHM characteristics of one of the samples from 106 to 53 nm. This improvement can be applied to thin-film-based sensors where there is a problem with the inhomogeneity of the coating thickness. Moreover, with this technique, it was proved that a coated length of just 3–4 mm permits the generation of an LMR, with implications for the miniaturization of the final device.

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U2 - 10.1364/OL.402177

DO - 10.1364/OL.402177

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EP - 4741

JO - Optics Letters

JF - Optics Letters

IS - 17

ER -

Improving the width of lossy mode resonances in a reflection configuration D-shaped fiber by nanocoating laser ablation

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