Type:
Journal
Description:
We propose the use of standard multiwavelength Fabry–PÉrot (FP) lasers for distributed strain and temperature measurement in hybrid Raman- and Brillouin-based fiber-optic sensors. The multiple longitudinal modes of FP lasers allow for accurate spontaneous Raman scattering measurement and for simultaneous high-sensitivity coherent detection of the Brillouin frequency shift parameter for all longitudinal modes. Experimental results confirm great performance improvement in simultaneous strain and temperature measurement using a single optical fiber.
Publisher:
IEEE
Publication date:
29 Sep 2009
Biblio References:
Volume: 21 Issue: 20 Pages: 1523-1525
Origin:
IEEE Photonics Technology Letters