Title :
Simultaneous Strain and Temperature Measurement With Fiber Bragg Grating and Multimode Fibers Using an Intensity-Based Interrogation Method
Author :
Zhou, Da-Peng ; Wei, Li ; Liu, Wing-Ki ; Lit, John W.Y.
Author_Institution :
Dept. of Phys. & Astron., Univ. of Waterloo, Waterloo, ON
fDate :
4/1/2009 12:00:00 AM
Abstract :
A new all-fiber sensor capable of simultaneous measurement of strain and temperature is presented. The sensor system is formed by a fiber Bragg grating and two sections of multimode fibers (MMFs). One section of the MMF is isolated from strain and acts as a temperature-dependent edge filter, while the other is isolated from both strain and temperature changes. By monitoring the optical power changes, it is feasible to obtain information that permits simultaneous measurement of strain and temperature with a low-cost and simple structure.
Keywords :
Bragg gratings; fibre optic sensors; strain measurement; temperature measurement; temperature sensors; all-fiber sensor; fiber Bragg grating; intensity-based interrogation method; multimode fibers; optical power changes; strain measurement; temperature measurement; temperature-dependent edge filter; Fiber Bragg gratings (FBGs); multimode fibers (MMFs); optical fiber sensors;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2013640
