Distributed optical fiber sensor for multi-point temperature measurement

Hui-bo Wang; Zhi-bin Wang; Zhi-hua Bai; Zhi-quan Li

doi:10.1117/12.759054

28 November 2007 Distributed optical fiber sensor for multi-point temperature measurement

Hui-bo Wang, Zhi-bin Wang, Zhi-hua Bai, Zhi-quan Li

Proceedings Volume 6834, Optical Design and Testing III; 68343S (2007) https://doi.org/10.1117/12.759054
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

The distributed optical fiber temperature sensor is set up by using the technique of optic time-domain reflection (OTDR) to get temperature information, and the way of getting the mean by the accumulating time-domain signal to improve the ratio of signal to noise. Base on the theory of Optical Time Domain Reflectometer, Raman scattering distributed optical fiber system for Multi-point temperature measurement is established. A new demodulation method is proposed, that is circulation demodulation method. The OTDR temperature curve of the next point to be measured is demodulated by the current OTDR temperature curve. The experiment validated that the theoretical analysis is correct, and the system can inhibit the calculation of temperature noise and prevent Rayleigh back scattering light from harassing anti-Stokes back scattering light. The spatial resolving power is less than 3m, the temperature resolving power is about ±3°C, and time resolving power is not more than 3min.

Citation Download Citation

Hui-bo Wang, Zhi-bin Wang, Zhi-hua Bai, and Zhi-quan Li "Distributed optical fiber sensor for multi-point temperature measurement", Proc. SPIE 6834, Optical Design and Testing III, 68343S (28 November 2007); https://doi.org/10.1117/12.759054

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