Distributed optical fibre sensing of temperature using time-correlated two-photon excited fluorescence

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

doi:10.1117/12.866366

8 September 2010 Distributed optical fibre sensing of temperature using time-correlated two-photon excited fluorescence

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

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76532Y (2010) https://doi.org/10.1117/12.866366
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

Distributed temperature sensing based on time-correlated two-photon excited fluorescence (TPF) in doped optical fibre is described. Counter-propagating laser pulses generate a TPF flash at the position of their overlap which is scanned along the fibre by a variable relative time delay. The flash is transmitted to one end where it is detected and analysed to yield the temperature from its thermal dependence. With the fluorescence power being completely independent of excitation pulse duration and temporal profile, the sensor does not require ultrashort excitation pulses for operation. There is potential for high spatial resolution as the length of the sensed region depends only on pulse duration. Preliminary results are presented for praseodymium doped single-mode fibre.

Citation Download Citation

Craig J. Dalzell, Thomas P. J. Han, and Ivan S. Ruddock "Distributed optical fibre sensing of temperature using time-correlated two-photon excited fluorescence", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76532Y (8 September 2010); https://doi.org/10.1117/12.866366

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