A compact fibre-based fluorescence sensor

Mohammad Ahmad; Kuang Po Chang; Terence A. King; Larry L. Hench

doi:10.1016/j.sna.2004.09.007

A compact fibre-based fluorescence sensor

Mohammad Ahmad, Kuang Po Chang, Terence A. King, Larry L. Hench

Centre for Preparatory studies

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

14 Citations (Scopus)

Abstract

A compact sensor consisting of two positive guiding fibres and one negative non-guiding fibre has been developed with large sensitivity for detection of fluorescence emitted from a laser dye. The positive fibre is used to deliver laser light to the negative fibre. The negative fibre acts as a sensing element, the pump light leaks into its surrounding which excites the laser dye molecules embedded in an index matched liquid coated onto the core of the negative fibre. The fluorescence is guided by another positive fibre attached to the distal end of the negative fibre and detected by a CCD camera. The response of the sensor with various fibre diameters and sensing lengths as a function of laser dye concentration has been determined. The sensor is capable of measuring 50 pg/ml of laser dye (rhodamine 6G).

Original language	English
Pages (from-to)	84-89
Number of pages	6
Journal	Sensors and Actuators, A: Physical
Volume	119
Issue number	1
DOIs	https://doi.org/10.1016/j.sna.2004.09.007
Publication status	Published - Mar 28 2005

Keywords

Biological and chemical agents
Fibres
Fluorescence sensors
Laser dye
Lasers
Leaky fibre and cells

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering

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title = "A compact fibre-based fluorescence sensor",

abstract = "A compact sensor consisting of two positive guiding fibres and one negative non-guiding fibre has been developed with large sensitivity for detection of fluorescence emitted from a laser dye. The positive fibre is used to deliver laser light to the negative fibre. The negative fibre acts as a sensing element, the pump light leaks into its surrounding which excites the laser dye molecules embedded in an index matched liquid coated onto the core of the negative fibre. The fluorescence is guided by another positive fibre attached to the distal end of the negative fibre and detected by a CCD camera. The response of the sensor with various fibre diameters and sensing lengths as a function of laser dye concentration has been determined. The sensor is capable of measuring 50 pg/ml of laser dye (rhodamine 6G).",

keywords = "Biological and chemical agents, Fibres, Fluorescence sensors, Laser dye, Lasers, Leaky fibre and cells",

author = "Mohammad Ahmad and Chang, {Kuang Po} and King, {Terence A.} and Hench, {Larry L.}",

note = "Funding Information: The authors gratefully acknowledge partial financial support of the UK Engineering and Physics Research Council and the US DARPA (LLH). Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

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AU - Chang, Kuang Po

AU - King, Terence A.

AU - Hench, Larry L.

N1 - Funding Information: The authors gratefully acknowledge partial financial support of the UK Engineering and Physics Research Council and the US DARPA (LLH). Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2005/3/28

Y1 - 2005/3/28

N2 - A compact sensor consisting of two positive guiding fibres and one negative non-guiding fibre has been developed with large sensitivity for detection of fluorescence emitted from a laser dye. The positive fibre is used to deliver laser light to the negative fibre. The negative fibre acts as a sensing element, the pump light leaks into its surrounding which excites the laser dye molecules embedded in an index matched liquid coated onto the core of the negative fibre. The fluorescence is guided by another positive fibre attached to the distal end of the negative fibre and detected by a CCD camera. The response of the sensor with various fibre diameters and sensing lengths as a function of laser dye concentration has been determined. The sensor is capable of measuring 50 pg/ml of laser dye (rhodamine 6G).

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KW - Fibres

KW - Fluorescence sensors

KW - Laser dye

KW - Lasers

KW - Leaky fibre and cells

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A compact fibre-based fluorescence sensor

Abstract

Keywords

ASJC Scopus subject areas

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