%0 Journal Article
%T Quasi-distributed fiber bragg grating array sensor for furnace applications
%A P. Saidi Reddy
%A R. L. N. Sai Prasad
%A D. Sen Gupta
%A M. Sai Shankar
%A K. Srimannarayana
%A P. Ravinder Reddy
%J Photonic Sensors
%@ 2190-7439
%D 2013
%I 
%R 10.1007/s13320-012-0046-7
%X An experimental work on distributed temperature sensing making use of the fiber Bragg grating (FBG) array sensor for possible applications in the monitoring of the temperature profile in high temperature boilers is presented. A special sensor has been designed for this purpose which consists of four FBGs (of wavelengths ¦Ë B1 =1545.8 nm, ¦Ë B2 =1547 nm, ¦Ë B3 =1550.8 nm, ¦Ë B4 =1555.5 nm at 30 ¡ãC) written in the hydrogen-loaded fiber in line. All the FBGs are encapsulated inside a stainless steel tube using the rigid probe technique for avoiding micro cracks. The spatial distribution of the temperature profile inside a prototype boiler was measured experimentally both in horizontal and vertical directions employing the above sensor, and the results are presented. Further, the finite element simulation has been carried out by using ANSYS R11 software to predict temperature contours in the boiler, and the experimental and predicted results were found to be closely matching.
%K Fiber Bragg gratings
%K encapsulation
%K quasi-distributed FBG sensor array
%K micro cracks
%K finite element analysis
%K high temperature
%U http://link.springer.com/article/10.1007/s13320-012-0046-7