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 conferencePaper

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.

Conference

ConferenceFourth European Workshop on Optical Fibre Sensors
CountryPortugal
CityPorto
Period8/09/1010/09/10

Fingerprint

fibers
photons
crystals
fluorescence
ruby
polarization
absorption cross sections
excitation
sensors
single crystals
room temperature
geometry
temperature

Keywords

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

Cite this

Dalzell, C. J., Han, T. P. J., Ruddock, I. S., Santos, JL. (Ed.), Culshaw, B. (Ed.), LopezHiguera, JM. (Ed.), & MacPherson, WN. (Ed.) (2010). Distributed crystal fibre sensing for extreme environments. Paper presented at Fourth European Workshop on Optical Fibre Sensors, Porto, Portugal. https://doi.org/10.1117/12.866363
Dalzell, Craig J. ; Han, Thomas P. J. ; Ruddock, Ivan S. ; Santos, JL (Editor) ; Culshaw, B (Editor) ; LopezHiguera, JM (Editor) ; MacPherson, WN (Editor). / Distributed crystal fibre sensing for extreme environments. Paper presented at Fourth European Workshop on Optical Fibre Sensors, Porto, Portugal.
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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",
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note = "Fourth European Workshop on Optical Fibre Sensors ; Conference date: 08-09-2010 Through 10-09-2010",

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Dalzell, CJ, Han, TPJ, Ruddock, IS, Santos, JL (ed.), Culshaw, B (ed.), LopezHiguera, JM (ed.) & MacPherson, WN (ed.) 2010, 'Distributed crystal fibre sensing for extreme environments' Paper presented at Fourth European Workshop on Optical Fibre Sensors, Porto, Portugal, 8/09/10 - 10/09/10, . https://doi.org/10.1117/12.866363

Distributed crystal fibre sensing for extreme environments. / Dalzell, Craig J.; Han, Thomas P. J.; Ruddock, Ivan S.; Santos, JL (Editor); Culshaw, B (Editor); LopezHiguera, JM (Editor); MacPherson, WN (Editor).

2010. Paper presented at Fourth European Workshop on Optical Fibre Sensors, Porto, Portugal.

Research output: Contribution to conferencePaper

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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M3 - Paper

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Dalzell CJ, Han TPJ, Ruddock IS, Santos JL, (ed.), Culshaw B, (ed.), LopezHiguera JM, (ed.) et al. Distributed crystal fibre sensing for extreme environments. 2010. Paper presented at Fourth European Workshop on Optical Fibre Sensors, Porto, Portugal. https://doi.org/10.1117/12.866363