Title :
An FBG sensor for strain and temperature discrimination at cryogenic regime
Author :
Sengupta, D. ; Shankar, M. Sai ; Kishore, P. ; Reddy, P. Saidi ; Prasad, R. L N Sai ; Rao, P. Vengal ; Srimannarayana, K.
Author_Institution :
Dept. of Phys., Nat. Inst. of Technol., Warangal, India
Abstract :
A simple technique to discriminate the Strain and Temperature with a single Fiber Bragg Grating (FBG) at cryogenic regime is presented in this paper. An uniform FBG is divided into two parts, one half is without coating (FBG1) and other half is coated with Cyno-Acrylic Adhesive (FBG2). The measured temperature and strain sensitivities of the FBG1 are 4.05×10-6/K and 2.13×10-6/με and FBG2 are 1.39×10-5/K and 1.72×10-6/με respectively.
Keywords :
Bragg gratings; antireflection coatings; cryogenics; fibre optic sensors; strain measurement; temperature measurement; FBG sensor; cryogenic regime; cyno-acrylic adhesive coatings; single fiber Bragg grating; strain discrimination; strain sensitivity measurement; temperature discrimination; temperature sensitivity measurement; Abstracts; Coils; Cryogenics; Heating; Optical sensors; FBG; coating; cryogenic; strain temperature discrimination;
Conference_Titel :
Communications and Photonics Conference and Exhibition, 2011. ACP. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-0-8194-8961-6
