Distributed crystal fibre sensing for extreme environments

Craig J. Dalzell; Thomas P. J. Han; Ivan S. Ruddock; JL Santos; B Culshaw; JM LopezHiguera; WN MacPherson

doi:10.1117/12.866363

Distributed crystal fibre sensing for extreme environments

Craig J. Dalzell, Thomas P. J. Han, Ivan S. Ruddock, JL Santos (Editor), B Culshaw (Editor), JM LopezHiguera (Editor), WN MacPherson (Editor)

Research output: Contribution to conference › Paper › peer-review

Abstract

Distributed sensing of temperature can be achieved by using time-correlated two-photon excited fluorescence (TPF). To assess the extension of this technique to crystal fibres for high temperature applications, various aspects are considered including the two-photon absorption cross-section (delta), dopant density and the geometry of single crystal fibres. By comparing the fluorescence yield for two-photon excitation with that for single-photon excitation of the same transition, d for ruby was measured over the 0.8-1.2 mu m range with maximum room temperature values of 5.9 x 10(-3) GM for e-polarisation and 4.6 x 10(-3) GM for o-polarisation at 840 nm. It is shown that values of this magnitude are adequate for a practical TPF based crystal fibre sensor to be realised.

Original language	English
DOIs	https://doi.org/10.1117/12.866363
Publication status	Published - 2010
Event	Fourth European Workshop on Optical Fibre Sensors - Porto, Portugal Duration: 8 Sept 2010 → 10 Sept 2010

Conference

Conference	Fourth European Workshop on Optical Fibre Sensors
Country/Territory	Portugal
City	Porto
Period	8/09/10 → 10/09/10

Keywords

optical fibre sensors
; distributed sensing; temperature
ruby
doped fibre
two-photon excitation
fluorescence

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10.1117/12.866363

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title = "Distributed crystal fibre sensing for extreme environments",

abstract = "Distributed sensing of temperature can be achieved by using time-correlated two-photon excited fluorescence (TPF). To assess the extension of this technique to crystal fibres for high temperature applications, various aspects are considered including the two-photon absorption cross-section (delta), dopant density and the geometry of single crystal fibres. By comparing the fluorescence yield for two-photon excitation with that for single-photon excitation of the same transition, d for ruby was measured over the 0.8-1.2 mu m range with maximum room temperature values of 5.9 x 10(-3) GM for e-polarisation and 4.6 x 10(-3) GM for o-polarisation at 840 nm. It is shown that values of this magnitude are adequate for a practical TPF based crystal fibre sensor to be realised.",

keywords = "optical fibre sensors, ; distributed sensing; temperature, ruby, doped fibre , two-photon excitation, fluorescence",

author = "Dalzell, {Craig J.} and Han, {Thomas P. J.} and Ruddock, {Ivan S.} and JL Santos and B Culshaw and JM LopezHiguera and WN MacPherson",

year = "2010",

doi = "10.1117/12.866363",

language = "English",

note = "Fourth European Workshop on Optical Fibre Sensors ; Conference date: 08-09-2010 Through 10-09-2010",

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TY - CONF

T1 - Distributed crystal fibre sensing for extreme environments

AU - Dalzell, Craig J.

AU - Han, Thomas P. J.

AU - Ruddock, Ivan S.

A2 - Santos, JL

A2 - Culshaw, B

A2 - LopezHiguera, JM

A2 - MacPherson, WN

PY - 2010

Y1 - 2010

N2 - Distributed sensing of temperature can be achieved by using time-correlated two-photon excited fluorescence (TPF). To assess the extension of this technique to crystal fibres for high temperature applications, various aspects are considered including the two-photon absorption cross-section (delta), dopant density and the geometry of single crystal fibres. By comparing the fluorescence yield for two-photon excitation with that for single-photon excitation of the same transition, d for ruby was measured over the 0.8-1.2 mu m range with maximum room temperature values of 5.9 x 10(-3) GM for e-polarisation and 4.6 x 10(-3) GM for o-polarisation at 840 nm. It is shown that values of this magnitude are adequate for a practical TPF based crystal fibre sensor to be realised.

AB - Distributed sensing of temperature can be achieved by using time-correlated two-photon excited fluorescence (TPF). To assess the extension of this technique to crystal fibres for high temperature applications, various aspects are considered including the two-photon absorption cross-section (delta), dopant density and the geometry of single crystal fibres. By comparing the fluorescence yield for two-photon excitation with that for single-photon excitation of the same transition, d for ruby was measured over the 0.8-1.2 mu m range with maximum room temperature values of 5.9 x 10(-3) GM for e-polarisation and 4.6 x 10(-3) GM for o-polarisation at 840 nm. It is shown that values of this magnitude are adequate for a practical TPF based crystal fibre sensor to be realised.

KW - optical fibre sensors

KW - ; distributed sensing; temperature

KW - ruby

KW - doped fibre

KW - two-photon excitation

KW - fluorescence

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U2 - 10.1117/12.866363

DO - 10.1117/12.866363

M3 - Paper

T2 - Fourth European Workshop on Optical Fibre Sensors

Y2 - 8 September 2010 through 10 September 2010

ER -

Distributed crystal fibre sensing for extreme environments

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