Distributed crystal fibre sensing for extreme environments

Craig J. Dalzell; Thomas P. J. Han; Ivan S. Ruddock

doi:10.1117/12.866363

8 September 2010 Distributed crystal fibre sensing for extreme environments

Craig J. Dalzell, Thomas P. J. Han, Ivan S. Ruddock

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76533E (2010) https://doi.org/10.1117/12.866363
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

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 (δ), 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, δ for ruby was measured over the 0.8-1.2 μm range with maximum room temperature values of 5.9 × 10^-3 GM for epolarisation and 4.6 × 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.

Citation Download Citation

Craig J. Dalzell, Thomas P. J. Han, and Ivan S. Ruddock "Distributed crystal fibre sensing for extreme environments", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76533E (8 September 2010); https://doi.org/10.1117/12.866363

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available