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Microfibre resonating optical sensors for microfluidics

Microfibre resonating optical sensors for microfluidics
Microfibre resonating optical sensors for microfluidics
A considerable fraction of the fundamental mode can propagate outside the fibre physical boundary if the optical fibre has a micrometric or sub-micrometric diameter. In these conditions, high-Q resonators can be promptly achieved with simple coils. Devices based on coiled microfibres have a resonating wavelength strongly dependent on the surrounding media, hence they can be used as an extremely sensitive refractive index sensors. In free space, these devices suffer from reliability problems connected to stability and degradation; embedding in low refractive index polymers has solved this issue providing the stability requirements that a sensor needs. can be achieved for both resonating configurations. The use of a small size microfibers and/or thin layer of embedding material d improves considerably S in both CANMR and ENLR. CANMR has also a microfluidic channel which can be easily integrated in a more complex biosystem.
Xu, Fei
2d685b99-8205-437a-8e04-12bf73525010
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Xu, Fei
2d685b99-8205-437a-8e04-12bf73525010
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8

Xu, Fei and Brambilla, Gilberto (2008) Microfibre resonating optical sensors for microfluidics. Photon 2008, Edinburgh, UK. 25 - 28 Aug 2008.

Record type: Conference or Workshop Item (Paper)

Abstract

A considerable fraction of the fundamental mode can propagate outside the fibre physical boundary if the optical fibre has a micrometric or sub-micrometric diameter. In these conditions, high-Q resonators can be promptly achieved with simple coils. Devices based on coiled microfibres have a resonating wavelength strongly dependent on the surrounding media, hence they can be used as an extremely sensitive refractive index sensors. In free space, these devices suffer from reliability problems connected to stability and degradation; embedding in low refractive index polymers has solved this issue providing the stability requirements that a sensor needs. can be achieved for both resonating configurations. The use of a small size microfibers and/or thin layer of embedding material d improves considerably S in both CANMR and ENLR. CANMR has also a microfluidic channel which can be easily integrated in a more complex biosystem.

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More information

Published date: August 2008
Venue - Dates: Photon 2008, Edinburgh, UK, 2008-08-25 - 2008-08-28

Identifiers

Local EPrints ID: 65483
URI: http://eprints.soton.ac.uk/id/eprint/65483
PURE UUID: 29583bfc-522c-4a64-9eab-5f7a5e6ab382
ORCID for Gilberto Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

Catalogue record

Date deposited: 20 Feb 2009
Last modified: 02 Apr 2022 01:38

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Contributors

Author: Fei Xu

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