Advances in Brillouin-based distributed optical fiber temperature sensing

Details Advances in Brillouin-based distributed optical fiber temperature sensing Advances in Brillouin-based distributed optical fiber temperature sensing

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5634..232l&link_type=abstract

Advanced Sensor Systems and Applications II. Edited by Rao, Yun-Jiang; Kwon, Osuk Y.; Peng, Gang-Ding. Proceedings of the SPIE,

Statistics

Applications

Scientific paper

This paper demonstrates the recent achievements in the field of Brillouin based distributed optical fiber temperature sensing. When a dispersion-shifted fiber was subjected to a temperature cycle between 20 and 820 °C, the Brillouin shift exhibited an undesired hysteresis with a maximum frequency discrepancy of larger than 48 MHz between heating and cooling processes. After the fiber was annealed for 9 h at 850 °C, however, the hysteresis almost disappeared for repeated temperature cycles in the ranges of 20-820 °C and of 500-800 °C with deviations of the measurements from the best-fit curve of less than +/-12.5MHz. The temperature dependence of Brillouin shift in the range of 20-820 °C in the annealed fiber was well expressed by a second order function of temperature. A sensing scheme that utilizes both output signals of the fiber Mach-Zehnder interferometer used as an optical frequency discriminator has been proposed. The scheme that has the advantages of less system adjustment and fast measurement, combined with a suitably annealed fiber, offers a reliable means for the Brillouin shift-based distributed sensing over the wide temperature range.

Affiliated with

Also associated with

No associations

Rating

Advances in Brillouin-based distributed optical fiber temperature sensing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Advances in Brillouin-based distributed optical fiber temperature sensing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Advances in Brillouin-based distributed optical fiber temperature sensing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-828115