Optical fiber probes for fluorescence based oxygen sensing

P. A.S. Jorge; P. Caldas; C. C. Rosa; A. G. Oliva; J. L. Santos

doi:10.1016/j.snb.2004.04.086

Optical fiber probes for fluorescence based oxygen sensing

P. A.S. Jorge, P. Caldas, C. C. Rosa, A. G. Oliva, J. L. Santos

Instituto de Tecnologia Química e Biológica António Xavier (ITQB)

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

91 Citations (Scopus)

Abstract

An optical fiber sensing system, for monitoring oxygen aiming in vivo nuclear magnetic resonance (NMR) applications is presented. Oxygen detection is based on the dynamic quenching of the fluorescence of a ruthenium complex trapped in the porous structure of a sol-gel silica film. Oxygen concentration is determined by phase-modulation fluorometry. Preliminary results concerning the characterization of doped sol-gel thin films deposited by dip coating in glass slides and in optical fiber probes are presented. Four different probe configurations are tested and compared. Best results are obtained with a fiber taper configuration which shows reproducibility and best excitation efficiency. This structure is fully characterized and some considerations regarding optimal fiber optical sensing probes for O₂ detection are addressed.

Original language	English
Pages (from-to)	290-299
Number of pages	10
Journal	Sensors and Actuators B: Chemical
Volume	103
Issue number	1-2
DOIs	https://doi.org/10.1016/j.snb.2004.04.086
Publication status	Published - 29 Sept 2004

Keywords

Optical fiber
Oxygen sensor
Phase fluorometry

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10.1016/j.snb.2004.04.086Licence: CC BY-NC-ND

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title = "Optical fiber probes for fluorescence based oxygen sensing",

abstract = "An optical fiber sensing system, for monitoring oxygen aiming in vivo nuclear magnetic resonance (NMR) applications is presented. Oxygen detection is based on the dynamic quenching of the fluorescence of a ruthenium complex trapped in the porous structure of a sol-gel silica film. Oxygen concentration is determined by phase-modulation fluorometry. Preliminary results concerning the characterization of doped sol-gel thin films deposited by dip coating in glass slides and in optical fiber probes are presented. Four different probe configurations are tested and compared. Best results are obtained with a fiber taper configuration which shows reproducibility and best excitation efficiency. This structure is fully characterized and some considerations regarding optimal fiber optical sensing probes for O2 detection are addressed.",

keywords = "Optical fiber, Oxygen sensor, Phase fluorometry",

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AU - Jorge, P. A.S.

AU - Caldas, P.

AU - Rosa, C. C.

AU - Oliva, A. G.

AU - Santos, J. L.

PY - 2004/9/29

Y1 - 2004/9/29

N2 - An optical fiber sensing system, for monitoring oxygen aiming in vivo nuclear magnetic resonance (NMR) applications is presented. Oxygen detection is based on the dynamic quenching of the fluorescence of a ruthenium complex trapped in the porous structure of a sol-gel silica film. Oxygen concentration is determined by phase-modulation fluorometry. Preliminary results concerning the characterization of doped sol-gel thin films deposited by dip coating in glass slides and in optical fiber probes are presented. Four different probe configurations are tested and compared. Best results are obtained with a fiber taper configuration which shows reproducibility and best excitation efficiency. This structure is fully characterized and some considerations regarding optimal fiber optical sensing probes for O2 detection are addressed.

AB - An optical fiber sensing system, for monitoring oxygen aiming in vivo nuclear magnetic resonance (NMR) applications is presented. Oxygen detection is based on the dynamic quenching of the fluorescence of a ruthenium complex trapped in the porous structure of a sol-gel silica film. Oxygen concentration is determined by phase-modulation fluorometry. Preliminary results concerning the characterization of doped sol-gel thin films deposited by dip coating in glass slides and in optical fiber probes are presented. Four different probe configurations are tested and compared. Best results are obtained with a fiber taper configuration which shows reproducibility and best excitation efficiency. This structure is fully characterized and some considerations regarding optimal fiber optical sensing probes for O2 detection are addressed.

KW - Optical fiber

KW - Oxygen sensor

KW - Phase fluorometry

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Optical fiber probes for fluorescence based oxygen sensing

Abstract

Keywords

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